Honda CB500X

Main CB500X Boards => CB500X - General Chat => Topic started by: Applecorp on December 16, 2017, 02:25:43 PM

Title: MPG Seems Low
Post by: Applecorp on December 16, 2017, 02:25:43 PM
Hi all, just recently bought a brand new 2017 500X and so far only put 200 miles on it. One of the main reasons I got it was because of how good the MPG supposedly is but mine just doesn't seem that great. I mostly commute 15 miles a day, maybe up to a quarter of that is city/stop start.

Been keeping a close eye on the dash fuel estimates (yeah I know they are never accurate) but it's been saying overall average of around 67mpg, which I though was ok, not great and pretty much every comment I've read says the results are always actually better. Thought nothing of it and assumed real world miles would be better.

Mine seems to be the reverse though. Had the trip set to zero, put 158 miles on her and decided to fill up, got 11.6 litres in, works out to a fairly unimpressive 61 mpg (UK). Unimpressive as I've been riding her like a nun on sleeping tablets for the most part, rarely gone over 5000rpm and pull away fairly gently and smoothly, using all the gears and sitting between 4-5000rpm most of the time.

Is this something I should be concerned about, is the small amount of city riding really hurting the MPG, will it get better once fully run in, etc?
Title: Re: MPG Seems Low
Post by: Triplebrew on December 16, 2017, 02:37:05 PM
I noticed the MPG on the dash seemed lower than I was expecting (showing similar figures to yours). On calculating the MPG I found it to be around 10 - 15 mpg more than the value displayed. I spoke with Honda about this and the consensus was that the onboard trip calculates the MPG based on a US gallon and not a UK gallon. Some further calculations seem to support this idea.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 02:39:12 PM
Yes I am aware of that, my problem is the opposite and not in my favour, and the real world calculated mpg is only 61 (bike indicates 67) and that is with very conservative riding. I looked on fuelly and there is not one single (average) result as low as mine.
Title: Re: MPG Seems Low
Post by: Triplebrew on December 16, 2017, 02:43:41 PM
Odd. I have owned 2 x CB500X, 2 x CBR500 and am currently on a CB500F and all have given 70+mpg. I would do the manual calculation 3 or 4 times and average it out and see if it is still low. I cannot remember if it improved after the first service or not.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 02:46:46 PM
Yeah I know it's early days having only filled her up once, just seems on the low side and as said everyone else's computer reading seems to underestimate, whereas mine has overestimated. Bit concerning as the fuel use gauge underestimates too, says I'd used 10.5 litres and I'd actually used 11.6 (which is the amount I filled up with). That could cause issues on low fuel warnings perhaps?

I'll see how it goes until the first service and see what they say at the Honda dealer.
Title: Re: MPG Seems Low
Post by: EscCtrl on December 16, 2017, 02:55:22 PM
If your 2017 only has 200 miles on it, the engine is still tight and not fully broken in. My mpg came up after about 1500US miles. No matter how I load my bike, I get roughly the same mpg, 68US mpg. I ride her like I stole her most of the time.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 03:06:56 PM
What mpg were you getting to start with?

I really can't see it jumping up to 68 mpg (81mpg UK) just cause the engine has loosened up.
Title: Re: MPG Seems Low
Post by: marcusfordus on December 16, 2017, 03:15:17 PM
Give it time. Mine was just the same the first two fill ups. I've still to hit my first service as sparkly white stuff put a stop to that on my country road commute at 6am. Every time I do ride I wonder how long that last fuel bar is going to stay on before I need to fill up. It's at 218 miles as of today.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 03:19:41 PM
Are you saying you've already seen an improvement after your second fill up?
Title: Re: MPG Seems Low
Post by: Phils bike on December 16, 2017, 03:37:27 PM
Hi there it should improve a bit once the engine has loosened up steady riding
Should return 70ish mpg motorway riding at high speed will see it drop to the
60s you will see claims on here of 80mpg and above lol I have had mine nearly
Two years and and average about 70mpg  you probably could achieve 80mpg plus if indeed you did ride like a nun but riding ment to be fun
All the best Phil
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 03:42:33 PM
Cheers Phil, hopefully I do see an improvement. Although if this crap weather continues it won't be for some time yet.   :190:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 05:45:07 PM
Been reading some interesting stuff on how cold weather effects mpg, (fairly significantly in some cases) and since I've only ridden this 2 week old bike in cold weather I guess that could also be a factor.

I leave work at 5:30 am and it is rather cold at the moment, only a 10 minute commute but barely enough time for the engine to get up to it's fuel efficient temperature, and off goes the engine. Cold weather also effects tyre pressure and increases air density so there is more drag effect with those two combined. Probably not that much but it all adds up.

So, that combined with being a new bike, I hope to see things improve in the warmer weather. 

Quote from an article I read:

Auto components such as electric motors, engines, transmissions and tires consume more energy at low temperatures, especially during startup. The viscosity of the oil and other fluids increases with decreasing temperature, which means that more work and more fuel is required to overcome friction in the engine, transmission and other drivetrain components. If the outside temperature is significantly below the ambient temperature at which the EPA prescribed tests were conducted and trips are short, the engines coolant system never reaches normal operating temperature and more fuel is utilized. Additionally, the amount of drag between tires and the road is about 20 percent greater at 0 degrees F than it is at 80 degrees F. Operating tires at lower than recommended operating pressure further degrades a vehicles fuel economy, but this is also a problem in warm weather.

Finally, a vehicles aerodynamic drag is proportional to air density. On a 70-degree-F day, the density of the air is 16 percent lower than on a day with temperatures around 0 degrees F. Although this makes little difference in urban driving, it could account for a highway mileage per gallon reduction of 7 percent on the colder day (including a 1.5 percent allowance for improvement in fuel efficiency at the higher engine load).

Considering all these factors, the fuel economy during urban trips of less than 10 minutes, in cold weather with snowy road conditions can easily be 50 percent lower than operation of the same vehicle in warm weather with dry roads.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:02:17 PM
I still get over 80mpg winter riding, so no problem really. Have a look at my stats by clicking on my fuelly link to see the difference between winter and summer.
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 06:03:55 PM
Revs are the thing - are you accelerating fast and running at speeds over say, 5-5500 rpm?  That seems to lower the mpg figure......I don't ride in town, and most riding is on 60mph limits with occasional motorway use, but only at or around 70mph.....I've done about 3500 miles from new this summer, and averaged (by the Honda speedo) 89mpg UK!!!  And no great difference from first tankful to last.....

I know that's high, but I'm a cruiser, if you like to ride fast, and rev high up and down through the gears, you'll have to expect much lower figures.....
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:06:44 PM
No, like I said it's a brand new bike and I'm running her in gently, I've been easy on the throttle 95% of the time and have rarely gone over 5000rpm.

For the record I've had lots of bikes, been riding for 15 years, and know all the fuel saving tricks.   :001:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:09:24 PM
*Originally Posted by AJC500 [+]
Revs are the thing - are you accelerating fast and running at speeds over say, 5-5500 rpm?  That seems to lower the mpg figure......I don't ride in town, and most riding is on 60mph limits with occasional motorway use, but only at or around 70mph.....I've done about 3500 miles from new this summer, and averaged (by the Honda speedo) 89mpg UK!!!  And no great difference from first tankful to last.....

I know that's high, but I'm a cruiser, if you like to ride fast, and rev high up and down through the gears, you'll have to expect much lower figures.....

I wouldn't trust that Honda on board computer Alex. A more accurate way is by using an app like Fuelly or similar and zeroing your trip meter at every fill up, that way you get a true average mpg over time and a more accurate tank range reading.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:13:01 PM
*Originally Posted by Irishrover [+]
I wouldn't trust that Honda on board computer Alex. A more accurate way is by using an app like Fuelly or similar and zeroing your trip meter at every fill up, that way you get a true average mpg over time and a more accurate tank range reading.

Indeed, that's what I've always done with my bikes, and I got only 61mpg on my first tank with the 500X (gentle riding).   :003:
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 06:14:40 PM
*Originally Posted by Irishrover [+]
I wouldn't trust that Honda on board computer Alex. A more accurate way is by using an app like Fuelly or similar and zeroing your trip meter at every fill up, that way you get a true average mpg over time and a more accurate tank range reading.

Ha! Ha! I like the idea that I am getting such good mpg though.....impresses the wife too!!!  :008:

Applecorp, I could average 66mpg on my Hyosung GT650 V-twin, which was not an economical engine..... I hope your figures increase, mpg is one of the bikes big attractions!!  :006:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:17:09 PM
*Originally Posted by Irishrover [+]
I still get over 80mpg winter riding, so no problem really. Have a look at my stats by clicking on my fuelly link to see the difference between winter and summer.

Yes but how long are you typically riding for?

My journeys are very short and the engine is barely able to get up to it's more fuel efficient temperature.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:18:21 PM
*Originally Posted by Phils bike [+]
Hi there it should improve a bit once the engine has loosened up steady riding
Should return 70ish mpg motorway riding at high speed will see it drop to the
60s you will see claims on here of 80mpg and above lol I have had mine nearly
Two years and and average about 70mpg  you probably could achieve 80mpg plus if indeed you did ride like a nun but riding ment to be fun
All the best Phil

I certainly don't ride like a nun mate and average 86mpg, 300 miles to a full tank. If you are going by that daft Honda on board computer, then it is way off and you are probably getting more than you think. Do you ever ride it until the reserve display starts to flash? I do and have ridden mine with 0.5 litres used with just 0.1 litre left in the tank according to the computer. I should do a video sometime to prove it is possible. Fill up and reset the trip, then ride until it almost runs out.  :005:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:20:14 PM
*Originally Posted by Applecorp [+]
Yes but how long are you typically riding for?

My journeys are very short and the engine is barely able to get up to it's more fuel efficient temperature.

12 mile commute each way on country roads and a bit of 30mph limits.
Just a side note, I broke my engine in the harsh way and not the manual recommended way.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:28:03 PM
*Originally Posted by Applecorp [+]
Indeed, that's what I've always done with my bikes, and I got only 61mpg on my first tank with the 500X (gentle riding).   :003:

If you are using fuelly, then the settings on the website might be set at U.S. default and not U.K. which would make my average 71mpg.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:29:18 PM
*Originally Posted by Irishrover [+]
12 mile commute each way on country roads and a bit of 30mph limits.
Just a side note, I broke my engine in the harsh way and not the manual recommended way.

Hmm, so many factors. I guess a big part of it is my slightly stoppy starty 6 mile commute each way into Birmingham city centre (worse on the way home as there is more traffic).

Time will tell I guess.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:31:03 PM
*Originally Posted by Irishrover [+]
If you are using fuelly, then the settings on the website might be set at U.S. default and not U.K. which would make my average 71mpg.

I'm not using Fuelly, I just divided my Trip (158 miles) by the fuel I put in the bike today (11.6 litres). That's 61mpg (UK/Imperial).   :006:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:39:35 PM
*Originally Posted by Applecorp [+]
I'm not using Fuelly, I just divided my Trip (158 miles) by the fuel I put in the bike today (11.6 litres). That's 61mpg (UK/Imperial).   :006:
The only way this can be done accurately is by filling up to the top, then zeroing the trip meter and waiting until the next fill up, then calculating the tank miles with the fuel put in. When you say you have done 158 miles is that from an almost empty tank?
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 06:45:26 PM
No, the bike came with some fuel (third of a tank maybe) but I filled it up to the top, reset the trip then did 158 miles, filled her up again today right to the brim (with 11.6 litres) and calculated from there.

61mpg UK.   :006:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 06:55:43 PM
*Originally Posted by Applecorp [+]
No, the bike came with some fuel (third of a tank maybe) but I filled it up to the top, reset the trip then did 158 miles, filled her up again today and calculated from there.

61mpg UK.   :006:

If you have only done 158miles since you last filled it to the top how do you know how many miles to the gallon you have done? Unless you fill it to the top again and divide the mileage done by the amount of fuel put in. That is why you do it from tank full to tank full as you get a more accurate reading. Next time you reset your trip meter don't fill up until you have about 280 miles showing or until the reserve 0.0 display flashes.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:02:36 PM
Eh, that's what I just said I did, I filled her up, reset the trip to zero, did 158 miles then filled her up again with 11.6 litres. 158 miles divided by 11.6 litres = 61mpg. I can't explain it any clearer.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:06:46 PM
*Originally Posted by Irishrover [+]
Next time you reset your trip meter don't fill up until you have about 280 miles showing or until the reserve 0.0 display flashes.

At 61mpg I won't even reach 280 miles.   :153:
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 07:09:14 PM
*Originally Posted by Applecorp [+]
Yes but how long are you typically riding for?

My journeys are very short and the engine is barely able to get up to it's more fuel efficient temperature.

I'll bet you have a point there - mpg for short, cold weather journeys in Birmingham traffic ain't going to match our Scottish roads - even those of us who commute into Glasgow.....which I don't....blissfully retired!! 

I went to a concert at Birmingham Symphony Hall this summer, staying close by, and don't ever want to face that traffic again.......

You'll get there, once it's run in and the days are sunny, you'll be boring everyone with mpg figures in the 70's and 80's.  :001:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:13:15 PM
AJC500, haha, I can't wait to bore you all.

Birmingham is just horrible for traffic isn't it (Symphony Hall is nice though), luckily I don't have to get to that part of the city though, I'm more on the fringe. Would love to be riding where you are instead.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:24:58 PM
Just went out to the garage, man it's cold out there.  :190:

This pic shows the miles done since my last fill up and note the 2 bars remaining.

(https://cdn.img.cb500x.com/WP_20171216_19_16_13_Pro.jpg)

Now here's the daft computer, way off.

(https://cdn.img.cb500x.com/WP_20171216_19_16_36_Pro.jpg)

Here's those happy economical miles done from new.

(https://cdn.img.cb500x.com/WP_20171216_19_16_51_Pro.jpg)
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 07:25:37 PM
*Originally Posted by Applecorp [+]
AJC500, haha, I can't wait to bore you all.

Birmingham is just horrible for traffic isn't it (Symphony Hall is nice though), luckily I don't have to get to that part of the city though, I'm more on the fringe. Would love to be riding where you are instead.

Even with satnav, I recon I went through a bus lane, up a one way street and u-turned where I shouldn't have.   :034:

Worth it though, it was for a Keith Emerson Tribute (I admit it, I'm an old prog rocker), full orchestra, guest artists, his present band and an ELP tribute band.  A real full volume evening!  :156:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:26:55 PM
I was at 158 miles when I had two bars on the fuel gauge left (it had just gone from 3 to 2 bars when it hit 158), crazy that you have 228.   :006:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:29:54 PM
*Originally Posted by AJC500 [+]
Even with satnav, I recon I went through a bus lane, up a one way street and u-turned where I shouldn't have.   :034:

Worth it though, it was for a Keith Emerson Tribute (I admit it, I'm an old prog rocker), full orchestra, guest artists, his present band and an ELP tribute band.  A real full volume evening!  :156:

Hehe nice, I like a bit of prog rock too, more 70's stuff, Yes, Floyd etc. Tried to get tickets to see Robert Plant at Symphony Hall but I was too late.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:30:04 PM
*Originally Posted by Applecorp [+]
I was at 158 miles when I had two bars on the fuel gauge left (it had just gone from 3 to 2 bars when it hit 158), crazy that you have 228.   :006:

It's crazy indeed mate, but shows that I'm not BS'ing.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:31:24 PM
I didn't think you were, I wish I had those numbers.
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 07:32:49 PM
My wife is watching Strictly, so I had to join in.....and I know it's only the Honda computer figure, but -
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:34:39 PM
*Originally Posted by AJC500 [+]
My wife is watching Strictly, so I had to join in.....and I know it's only the Honda computer figure, but -

You haven't adjusted your clock. Looks like Honda have fixed the computer with the latest models.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:35:44 PM
*Originally Posted by Irishrover [+]
You haven't adjusted your clock. Looks like Honda have fixed the computer with the latest models.

Fixed what?
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:36:38 PM
*Originally Posted by AJC500 [+]
My wife is watching Strictly, so I had to join in.....and I know it's only the Honda computer figure, but -

Thought you meant dancing for a moment there. Lol
Had visions of you both dancing in the living room.  :008:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:38:08 PM
*Originally Posted by Applecorp [+]
Fixed what?
Alex now has a more accurate reading, 88mpg.  :080:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:38:49 PM
*Originally Posted by Irishrover [+]
Now here's the daft computer, way off.

(https://cdn.img.cb500x.com/WP_20171216_19_16_36_Pro.jpg)

At least it's daft in your favour. Mine says 67mpg and I actually got 61mpg!
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 07:40:15 PM
*Originally Posted by Irishrover [+]
You haven't adjusted your clock. Looks like Honda have fixed the computer with the latest models.

Ha! Ha! Bike is off the road until March, and clocks will have changed back.  Good Planning?!  :008:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:41:32 PM
 :008: That is good planning.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 07:46:02 PM
*Originally Posted by Applecorp [+]
At least it's daft in your favour. Mine says 67mpg and I actually got 61mpg!

Don't go gentle with that bike mate, you will not burst it and even if you did it's under warranty. I'd rather give it some beans and see what fails than ride gently and things start to fail once out of warranty. Just for info my riding weight is about 12 stone with my gear on, not implying anything by that, but it does have an impact.
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 07:52:19 PM
I'm 12 stone 4 in the buff, so maybe over 13 stone geared up. Not a big bloke.

So you did the harder run in, what did that entail, not giving a sh#t how you ride it?   :008:

Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 08:03:42 PM
*Originally Posted by Applecorp [+]
I'm 12 stone 4 in the buff, so maybe over 13 stone geared up. Not a big bloke.

So you did the harder run in, what did that entail, not giving a sh#t how you ride it?   :008:

Absolutely. It's my bike after all.  :152: :046: :082: :008: :821:
Title: Re: MPG Seems Low
Post by: AJC500 on December 16, 2017, 08:06:34 PM
Whatever happens, and however you choose to run in your bike...........thanks to you both for getting me through the Strictly final!! :745:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 08:10:14 PM
Glad to be of service.   :008:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 08:12:03 PM
*Originally Posted by Irishrover [+]
Absolutely. It's my bike after all.  :152: :046: :082: :008: :821:

/wipes tear from eye.

You sir, took one for the team and I am proud to have met you.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 08:14:55 PM
*Originally Posted by Applecorp [+]
/wipes tear from eye.

You sir, took one for the team and I am proud to have met you.

Cheers buddy, have a great evening.  :821:
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 08:16:42 PM
*Originally Posted by AJC500 [+]
Whatever happens, and however you choose to run in your bike...........thanks to you both for getting me through the Strictly final!! :745:

We should have had "mrklunk" in here with his Tango. Lol  :745:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 08:18:36 PM
*Originally Posted by Irishrover [+]
Cheers buddy, have a great evening.  :821:

I'll drink to that. Merry Christmas.   :063:  <-- That will be me on the right shortly.
Title: Re: MPG Seems Low
Post by: Irishrover on December 16, 2017, 08:21:17 PM
*Originally Posted by Applecorp [+]
I'll drink to that. Merry Christmas.   :063:  <-- That will be me on the right shortly.

Merry Christmas to you too mate, it has been a giggle.  :821: :152:
Title: Re: MPG Seems Low
Post by: Applecorp on December 16, 2017, 08:32:19 PM
It has, great folk on here. I think I'll stick around.    :028:
Title: Re: MPG Seems Low
Post by: marcusfordus on December 16, 2017, 08:48:28 PM
*Originally Posted by Phils bike [+]
Hi there it should improve a bit once the engine has loosened up steady riding
Should return 70ish mpg motorway riding at high speed will see it drop to the
60s you will see claims on here of 80mpg and above lol I have had mine nearly
Two years and and average about 70mpg  you probably could achieve 80mpg plus if indeed you did ride like a nun but riding ment to be fun
All the best Phil

Correct. The more miles the better it got, and I expect will get even better.
Title: Re: MPG Seems Low
Post by: glencoeman on December 17, 2017, 09:07:07 AM
The low mpg figure is probably due to the low temperatures that we are currently having in the UK. The bike sensors will keep enriching the petrol/air mix - quite normal for all fuel injected bikes in cold weather. My UK bike is quite accurate on the mpg figures so someone is bull sh#tting when they say that UK bikes display USA mpg figures. It has been good from the day I bought it new.
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2017, 12:37:24 PM
Yes it is likely the cold is hurting the mpg to some degree, especially with the shorter journey's I do.

Did a little test on the way home from work today, did a few miles to warm the engine up, then took a detour down a long 50mph road I know so I could just cruise for a few miles, reset the average mpg display and was averaging 84mpg. As said before by others probably not accurate but a good indication that my bike is probably behaving normally. On normal stop start commutes and with a cold engine it was averaging 67mpg on the computer (real world 61mpg) so it's gone up quite a lot when riding in the right conditions.

Title: Re: MPG Seems Low
Post by: hilldweller on December 17, 2017, 01:38:45 PM
*Originally Posted by Applecorp [+]
a fairly unimpressive 61 mpg (UK).

Don't panic Mr Mainwaring. Early days yet. I have got below 70 maybe twice by hammering down an autoroute keeping up with nutters in a hurry, but mostly high 70s.

I always calculate fill up to fill up using a nice free Android app ( Fuel Log ).

Start worrying after the first service if it does not improve.
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2017, 01:53:47 PM
Ok Jones!

https://i.makeagif.com/media/2-17-2017/woTrxc.gif
Title: Re: MPG Seems Low
Post by: Pocketpete on December 17, 2017, 02:48:14 PM
Had my cb500x for 2 years. I run it all year round in rush hour traffic. I keep a good eye on the fuel usage. It does vary depending on speed and congestion.

My lowest is 58mpg on a tank and my highest 79mpg. My average being a steady 73mpg. These are by manual calculation. Quite happy with these figures. Cheaper than a car.
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2017, 02:58:41 PM
Indeed, it seems to me you're going to get around 60mpg if commuting around towns/cities etc but can get up to 80mpg (or more?) when cruising at stable speeds for longer periods.
Title: Re: MPG Seems Low
Post by: AJC500 on December 17, 2017, 06:13:26 PM
*Originally Posted by Applecorp [+]
Indeed, it seems to me you're going to get around 60mpg if commuting around towns/cities etc but can get up to 80mpg (or more?) when cruising at stable speeds for longer periods.

7 pages of discussion, perfectly summarised in 2 lines!!  Good work!!!  :020:

Title: Re: MPG Seems Low
Post by: SnowOwl on December 17, 2017, 06:16:58 PM
In my experience with a bit over 6000 miles on the bike now, the mpg varies a lot with speed and stop-and-go.  On my daily commute of about 18 miles one way I average 66 mpg-us.  There is a 3 mile run on the interstate in the middle of the commute and about half of the rest is city stop and go.

When I go to my parent's it is about 90 miles one way of back roads no faster than 55 mph.  On that trip I get about 76 mpg-us.  The one time it was late night and I was in a hurry to get home from my parents I took the interstate for a 60 mile run at 75 mph and that dropped my one way trip average to 58 mpg-us.
Title: Re: MPG Seems Low
Post by: Irishrover on December 17, 2017, 06:54:38 PM
*Originally Posted by glencoeman [+]
The low mpg figure is probably due to the low temperatures that we are currently having in the UK. The bike sensors will keep enriching the petrol/air mix - quite normal for all fuel injected bikes in cold weather. My UK bike is quite accurate on the mpg figures so someone is bull sh#tting when they say that UK bikes display USA mpg figures. It has been good from the day I bought it new.

Who said U.K. bikes display U.S. mpg?
Title: Re: MPG Seems Low
Post by: EscCtrl on December 17, 2017, 08:46:48 PM
*Originally Posted by Pocketpete [+]
Had my cb500x for 2 years. I run it all year round in rush hour traffic. I keep a good eye on the fuel usage. It does vary depending on speed and congestion.

My lowest is 58mpg on a tank and my highest 79mpg. My average being a steady 73mpg. These are by manual calculation. Quite happy with these figures. Cheaper than a car.

Is that imp gallon?

My lowest was 55mpg and my highest was 98mpg. Yes, 98mpg. I did more coasting down mountain passes to get that number. There are noise ordinances in towns so I had to keep the revs low. They're pretty strict on motorcycles, even with factory exhausts. The lowest mpg was climbing them at 40 mph in 2nd and 3rd gear. 6 to 20 % grades plus hauling my fat carcass and luggage.  :006:
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2017, 08:55:09 PM
*Originally Posted by EscCtrl [+]
Is that imp gallon?

My lowest was 55mpg and my highest was 98mpg. Yes, 98mpg.

That's 117 imperial mpg, how in hell is that even remotely possible when Honda themselves state max mpg at 83?!

Title: Re: MPG Seems Low
Post by: Pocketpete on December 17, 2017, 09:00:07 PM
Mine was uk gallons. Maybe different for usa
Title: Re: MPG Seems Low
Post by: hilldweller on December 17, 2017, 10:28:11 PM
*Originally Posted by Applecorp [+]
Ok Jones!

https://i.makeagif.com/media/2-17-2017/woTrxc.gif

 :008:
Title: Re: MPG Seems Low
Post by: goldfever on December 18, 2017, 11:39:10 AM
My average economy is 68mpg (UK) on fuelly. Very few urban miles, most use is on a 20 mile commute (half at 50mph other at 70mph, both actual not as indicated). I weigh 13 stone, travel without luggage most of the time and without pillion.

I wonder if my slip on is having a minor effect, perhaps being a stone overweight also. But I've never averaged more than 80mpg for a tank even driving like a nun.

Nothing wrong noted with intake or exhaust by mechanics up to the latest 24,000mi service.

Jealous of others' cost savings but puzzled as to the difference between my fuel economy and what others have been achieving...
Title: Re: MPG Seems Low
Post by: marktbike on December 18, 2017, 12:29:43 PM
I rarely go below 32 km/l (90 UK mpg), but I don't ride in town and usually take in the sights at low speed, quite Always under 100 kph. Riding style makes all the difference, in my opinion...
Title: Re: MPG Seems Low
Post by: hilldweller on December 18, 2017, 03:56:19 PM
*Originally Posted by goldfever [+]
even driving like a nun.

So why are these nuns getting such bad press in here. Don't nuns ever have bad habits ?
Title: Re: MPG Seems Low
Post by: EscCtrl on December 18, 2017, 09:16:08 PM
*Originally Posted by Applecorp [+]
That's 117 imperial mpg, how in hell is that even remotely possible when Honda themselves state max mpg at 83?!

I had to do a double take when I did the math. Then I did the math again. A lot of low rpm cruising mixed with about 100 miles of coasting down mountains without using the throttle.
Title: Re: MPG Seems Low
Post by: SnowOwl on December 18, 2017, 09:20:52 PM
*Originally Posted by EscCtrl [+]
I had to do a double take when I did the math. Then I did the math again. A lot of low rpm cruising mixed with about 100 miles of coasting down mountains without using the throttle.
What mpg did you get going UP the mountain?  What was the average of the trips up and down?
Title: Re: MPG Seems Low
Post by: EscCtrl on December 18, 2017, 09:44:54 PM
*Originally Posted by SnowOwl [+]
What mpg did you get going UP the mountain?  What was the average of the trips up and down?

My average over the entire trip was roughly 72mpg. My average on a regular basis is 68mpg. Even going up I don't drop much below 68 if it does. I was stuck in traffic and really couldn't ride hard. I kept the revs low in case I got stuck behind a wreck. I had that happened when I drove my car. Two hours of inching along until everyone got around and cleared out so the vehicles could be removed.
Title: Re: MPG Seems Low
Post by: Dukie on December 18, 2017, 10:10:24 PM
It should not be happening, I averaged 72mpg over a fair few miles.  pretty much only  stop start  traffic killed mine and even then 72 lifetime average is good for London and touring. I got over 80 in Brittany without trying several times because I took rodes with no cars and explored.  The daily commute  took it down. Also riding in winter lost me about 6-7mpg which Improved in warmer weather. So maybe more time with better weather will raise your average.  I've always found a fist bit of variety over the first 800 miles or so on each bike.
Try using the current mpg and see if riding in a different gear has any impact
Title: Re: MPG Seems Low
Post by: EscCtrl on December 18, 2017, 10:30:26 PM
*Originally Posted by Dukie [+]
It should not be happening, I averaged 72mpg over a fair few miles.  pretty much only  stop start  traffic killed mine and even then 72 lifetime average is good for London and touring. I got over 80 in Brittany without trying several times because I took rodes with no cars and explored.  The daily commute  took it down. Also riding in winter lost me about 6-7mpg which Improved in warmer weather. So maybe more time with better weather will raise your average.  I've always found a fist bit of variety over the first 800 miles or so on each bike.
Try using the current mpg and see if riding in a different gear has any impact

I'm a fat arse and then pile on my luggage. The economy isn't the best it could be. All of my other 500's get around 50-55 mpg. So I am happy, even tho I'm not getting the best mpg.
Title: Re: MPG Seems Low
Post by: AJC500 on December 19, 2017, 09:28:32 AM
When you read the bike magazines, and they think they are doing well to get mid-40's mpg out of just about ANY bike they ride, we are all doing better than most!!  :169:
Title: Re: MPG Seems Low
Post by: Applecorp on December 19, 2017, 01:39:52 PM
It seems to be improving already with a few hundred miles on the clock and the weather warming up a bit (still cold but a lot better than it was). Averaged a return commute today (with some horrible traffic on the way home) of 78mpg according to the computer which is a pretty good jump from my first tank, real world figures will be lower but I'm more than happy with that.
Title: Re: MPG Seems Low
Post by: marktbike on December 19, 2017, 02:13:06 PM
Difference between summer and winter can go as far as 4 km/l (11,30 UK mpg), in my experience, on the same roads and with the same riding style
Title: Re: MPG Seems Low
Post by: Tod. on December 19, 2017, 05:39:58 PM
Iíve stopped calculating mpg. I donít need all that crap in my head, it full of sh#t already and I donít need any more. So I just fill it up at about every 250 miles or so, with a few bars showing on the gauge. Summer? Winter? Altitude? Bloody hell! And just to throw a spanner in the works..... cold air is denser, so you get better performance shoving cold air into a hot engine. Thatís why they invented intercoolers for turbos.
Jus sayiní
Title: Re: MPG Seems Low
Post by: Applecorp on December 19, 2017, 06:29:24 PM
Haha, it's ok now, I'm not too bothered. I just initially thought the mpg was quite poor but it just turns out it's not and there are lots of factors (more than I knew) into how fuel efficiency works. Whatever happens I'm pretty sure I'll be getting well over 200 miles now (probably around 250) before I have to fill up, that's a lot more than any other bike I've had.
Title: Re: MPG Seems Low
Post by: Pigeonherd on December 19, 2017, 10:45:04 PM
As noted in my Fuelly link below, my average mpg is about 70 (US). I go back and forth between commuting tamely (upper 70's) and tooling around (mid-60s).

My chain has been riding rough recently and is in need of replacement, and my last fill-up saw a dive to only 60mpg(US)-- my lowest yet. :0
Title: Re: MPG Seems Low
Post by: Applecorp on December 20, 2017, 04:57:37 AM
@Pigeonherd

Hmm, regarding your chain. I noticed my throttle was a bit jerky at very low speeds and happened to look at the chain and noticed it looked a little slack, measured it and it's a little over 40mm which is more than the safety sticker on the swing arm states.

Is this normal for a brand new bike (only had it 18 days) or maybe not set correctly at the dealer before they handed it over to me? Either way it definitely needs adjusting.
Title: Re: MPG Seems Low
Post by: glencoeman on December 20, 2017, 08:20:21 AM
*Originally Posted by Applecorp [+]
@Pigeonherd

Hmm, regarding your chain. I noticed my throttle was a bit jerky at very low speeds and happened to look at the chain and noticed it looked a little slack, measured it and it's a little over 40mm which is more than the safety sticker on the swing arm states.

Is this normal for a brand new bike (only had it 18 days) or maybe not set correctly at the dealer before they handed it over to me? Either way it definitely needs adjusting.
Yes, that amount of free play in the chain is OK (actually 40-50mm). When you take your bike in to the dealer for its 600 mile service, check the freeplay in the chain afterwards. I have had two bikes with chains adjusted with 25mm of free play in the chain when they should have been 40-50mm. A lot of mechanics seem incapable of reading what the free play is stated on the chain guard/ swinging arm and adjust them to most road only bikes specifics which is approx 25mm. The need for 40-50mm free play is mainly because of the larger swinging arm movement on adventure type bikes.
Title: Re: MPG Seems Low
Post by: marktbike on December 20, 2017, 09:36:20 AM
The impact on mileage of cold air is in the sense Tod explains, engine efficiency wise. But the prevalent effect is that going through dense air requires more energy. Moreover, a cold engine will be primed for longer, so lots of fuel go wasted before the engine warms up properly.
At least that's what I know and the numbers tell me just the same...
Title: Re: MPG Seems Low
Post by: SnowOwl on December 20, 2017, 02:24:47 PM
*Originally Posted by Applecorp [+]
@Pigeonherd

Hmm, regarding your chain. I noticed my throttle was a bit jerky at very low speeds and happened to look at the chain and noticed it looked a little slack, measured it and it's a little over 40mm which is more than the safety sticker on the swing arm states.

Is this normal for a brand new bike (only had it 18 days) or maybe not set correctly at the dealer before they handed it over to me? Either way it definitely needs adjusting.
A comprehensive check over is necessary after picking up the bike from the dealer.  I trailered mine home and glad I did!  Once home I found the following:

- The oil was overfilled by 7 ounces (207ml), manual states "Do not overfill above the upper level
mark" and "Overfilling with oil or operating with insufficient oil can
cause damage to your engine"

- Both tires were about 10psi low

- The chain had over 2 in of slack (51 mm), the manual calls for 1.4 to 1.8 in (35 to 45 mm).  Couldn't get an accurate measure since the chain touched the swing arm when pushed up

- The rear tire valve stem cap was missing

- The rear brake was very soft and mushy, bled line and found a significant amount of air bubbles in it

- While bleeding rear brake found that the brake fluid in both front and rear was very thick and dark yellow, had to flush and fill the brake fluid on a new bike!

I may purchase another bike from this dealership, they gave me a good deal, but will NEVER take it there for service.

 
Title: Re: MPG Seems Low
Post by: AJC500 on December 20, 2017, 03:05:34 PM
*Originally Posted by SnowOwl [+]
A comprehensive check over is necessary after picking up the bike from the dealer.  I trailered mine home and glad I did!  Once home I found the following:

- The oil was overfilled by 7 ounces (207ml), manual states "Do not overfill above the upper level
mark" and "Overfilling with oil or operating with insufficient oil can
cause damage to your engine"

- Both tires were about 10psi low

- The chain had over 2 in of slack (51 mm), the manual calls for 1.4 to 1.8 in (35 to 45 mm).  Couldn't get an accurate measure since the chain touched the swing arm when pushed up

- The rear tire valve stem cap was missing

- The rear brake was very soft and mushy, bled line and found a significant amount of air bubbles in it

- While bleeding rear brake found that the brake fluid in both front and rear was very thick and dark yellow, had to flush and fill the brake fluid on a new bike!

I may purchase another bike from this dealership, they gave me a good deal, but will NEVER take it there for service.

Sorry SnowOwl, I'd find a new dealer!!  :034:
Title: Re: MPG Seems Low
Post by: SnowOwl on December 20, 2017, 04:27:32 PM
Motorcycle dealers are very few and far between around here.  The only local ones are HD and BMW.  For anything else it is a minimum 2 hours away.  Not exactly close enough to just drop in and look around.  The dealer didn't build the bike, their service department just does the final setup.  As long as I get a good purchase price and can do all the service myself I don't care how good their service department is as I won't be using them.  Unfortunately, most dealerships make the bulk of their money on after sales service.  Because of that, this dealer may not be around long enough for me to make another purchase from them.  They had only been in business a little over a year when I bought the bike.
Title: Re: MPG Seems Low
Post by: Applecorp on December 20, 2017, 05:54:27 PM
@SnowOwl

Jeez, that's pretty awful to sell a bike in that condition. New as well, that is shocking, how on earth did the brake fluid get in such a state?

If the chain is supposed to be between 25mm and 45mm then mine is fine.
Title: Re: MPG Seems Low
Post by: Pigeonherd on December 20, 2017, 07:51:55 PM
Here's the drive chain entry in the owner's manual:
https://www.####.com/manual/1043066/Honda-Cb500x.html?page=72#manual
This one is for the 2013 Euro (plus AUS and Korea) version of the bike though, so later versions may have slightly different requirements.

In my case, I had propped my bike up between its side-stand and a milk crate to clean and lube the chain in the hope that it would rectify the jerky throttle mentioned by Applecorp (though mine has developed this issue recently, it wasn't like this when I purchased it 3k mi (4800km) and 8 months ago, and has gotten progressively worse over the past couple weeks) as well as a frictional woof-woof-woof sound not unlike that of a steam engine or the irregular loading of a pedal bike in too high a gear. I took it to the local shop to borrow a proper rear wheel stand, and spun it again and found some tight spots and some loose spots, so it's not just improperly adjusted, my chain is binding. Input from the mechanics included:
-throw away that crappy lube you've been using (bel-ray super clean)
-wow, 11 thousand miles? That's pretty good for a crappy stock chain...
-replace with the absolute best chain setup you can afford

Apparently tight spots won't increase the rate of wear and my sprockets don't urgently need to be replaced, but again higher quality parts will last longer and serve better.
Title: Re: MPG Seems Low
Post by: SnowOwl on December 20, 2017, 09:10:38 PM
*Originally Posted by Applecorp [+]
@SnowOwl

Jeez, that's pretty awful to sell a bike in that condition. New as well, that is shocking, how on earth did the brake fluid get in such a state?

If the chain is supposed to be between 25mm and 45mm then mine is fine.
The manual calls for 35mm to 45mm.  25mm is too tight and will lead to excessive wear of the countershaft bearing, sprockets, chain and rear wheel bearing.
Title: Re: MPG Seems Low
Post by: Applecorp on December 21, 2017, 04:49:19 AM
Oh, who said 25mm was ok?

Anyway the freeplay on mine is a little over 40mm.
Title: Re: MPG Seems Low
Post by: Mel111 on December 21, 2017, 08:54:41 AM
*Originally Posted by Applecorp [+]
@SnowOwl

Jeez, that's pretty awful to sell a bike in that condition. New as well, that is shocking, how on earth did the brake fluid get in such a state?

If the chain is supposed to be between 25mm and 45mm then mine is fine.
You did.
Title: Re: MPG Seems Low
Post by: Irishrover on December 21, 2017, 05:53:43 PM
Filled up yesterday and the reserve display was flashing with 0.1Litre used. This is what I normally get to a tank, but in summer months I get about 15 miles more before the reserve display starts to blink.

(https://cdn.img.cb500x.com/WP_20171220_16_41_29_Pro.jpg)
Title: Re: MPG Seems Low
Post by: Applecorp on December 21, 2017, 06:02:38 PM
Reserve is 2.8 litres isn't it?

So the counter just counts upwards from zero until those 2.8 litres are used?

Title: Re: MPG Seems Low
Post by: EscCtrl on December 21, 2017, 07:27:40 PM
*Originally Posted by Irishrover [+]
Filled up yesterday and the reserve display was flashing with 0.1Litre used. This is what I normally get to a tank, but in summer months I get about 15 miles more before the reserve display starts to blink.

(https://cdn.img.cb500x.com/WP_20171220_16_41_29_Pro.jpg)

On most rides, that's about where I am when the low fuel light blinks.  :306:
Title: Re: MPG Seems Low
Post by: Applecorp on December 30, 2017, 11:52:57 AM
Things seem to be improving, currently sitting at 210 miles with 2 segments left on the fuel gauge (although it's about to change to one segment).

How long do you get roughly until the final segment starts to flash?

Whatever the case I'm more than happy with that, at worst it's looking like 250 to a tank, which is great considering the type of riding I do.
Title: Re: MPG Seems Low
Post by: Irishrover on December 30, 2017, 11:59:36 AM
*Originally Posted by Applecorp [+]
Things seem to be improving, currently sitting at 210 miles with 2 segments left on the fuel gauge (although it's about to change to one segment).

How long do you get roughly until the final segment starts to flash?

Whatever the case I'm more than happy with that, at worst it's looking like 250 to a tank, which is great considering the type of riding I do.

My final segment starts to flash about 280 miles, then I let it run on reserve until the 0.2 gallon(Imperial) display shows. I have run it to the 0.6 gallon reserve before which is max and I was sweating bullets.  :110:
Title: Re: MPG Seems Low
Post by: Applecorp on December 30, 2017, 12:01:45 PM
Sorry, what I meant was how many miles do you get on the final segment alone before it starts flashing?
Title: Re: MPG Seems Low
Post by: Irishrover on December 30, 2017, 12:09:46 PM
*Originally Posted by Applecorp [+]
Sorry, what I meant was how many miles do you get on the final segment alone before it starts flashing?

I don't really get what you mean mate. Just saying that around 280 miles mine starts flashing and goes to the reserve used display. If you mean each segment then they are roughly 50 miles for me which would give my 300 mile tank range.
Title: Re: MPG Seems Low
Post by: Applecorp on December 30, 2017, 12:16:19 PM
Lol, I mean when the fuel gauge hits one segment left does it start flashing straight away like on my Bandit? Or does it run for say 10 miles and then start flashing?
Title: Re: MPG Seems Low
Post by: marcusfordus on December 30, 2017, 12:49:42 PM
*Originally Posted by Applecorp [+]
Lol, I mean when the fuel gauge hits one segment left does it start flashing straight away like on my Bandit? Or does it run for say 10 miles and then start flashing?

My last segment just took me 50 miles, this morning it started to flash so popped into P.station and the bike took 14 litres to fill. 78.4 mpg.
Title: Re: MPG Seems Low
Post by: Applecorp on December 30, 2017, 12:51:47 PM
Right so it stays solid for quite some time before it flashes then? at that point you have 2.8 litres left? (Edit: 2.8 litres left is when the low fuel trip kicks in isn't it?

That is really impressive.
Title: Re: MPG Seems Low
Post by: marcusfordus on December 30, 2017, 01:16:12 PM
Correct. I was at 241 miles and half a mile from filling station that would be open on my way into work.  Impressive last segment I thought for a bike barely run in (741 miles).
Title: Re: MPG Seems Low
Post by: Applecorp on December 30, 2017, 01:24:35 PM
Indeed, in my experience the last segment doesn't give much mileage on other bikes I've had. Cheers for the info.
Title: Re: MPG Seems Low
Post by: HerrDeacon on December 30, 2017, 02:57:40 PM
I find that I get anywhere between 60-80 kms per segment on the gauge, depending on how I ride.
Title: Re: MPG Seems Low
Post by: Applecorp on December 31, 2017, 01:15:08 PM
*Originally Posted by marcusfordus [+]
My last segment just took me 50 miles, this morning it started to flash so popped into P.station and the bike took 14 litres to fill. 78.4 mpg.

Hmm, is the last segment supposed to flash for X amount of miles (first low fuel warning) and then the low fuel trip kicks in? (second warning). I was led to believe this is supposed to be the case.

Cause today I only got 25 miles on the last segment then it started flashing along with the low fuel trip counter appearing at the same time.
Title: Re: MPG Seems Low
Post by: marcusfordus on December 31, 2017, 02:30:50 PM
I had two segments showing on my way home, the next time I started the bike up to take it for the 1st service. I warmed it up and it dropped into the last segment. I rode to Nottingham had it serviced, rode it back. Next day went a further 8 miles going to work, then it flashed going up a hill. Going down the other side it went onto one bar. Another half mile the counter popped up.
I don't know how it's all calibrated but that's what it did to me. Those 50 miles were also the time I was riding like a granny when the snow fell on the roads. I was Mr Johnny Upright trying not to brake and the lightest of throttle trying not to spin it up. A day I will remember for some while.
Title: Re: MPG Seems Low
Post by: Applecorp on December 31, 2017, 02:37:23 PM
Lol, I'm a coward when it comes to snow. I went to work one day, completely fine, don't ever recall there being a forecast for much or any snow but it came down something terrible a few hours before I had to leave (this was about 10 years ago). I only rode her home because I had little choice, the bike would have almost certainly been stolen had I left it there overnight. It was the slowest journey and most terrifying day of my life, it was dark and I was pretty much snow blind, visor up or down it didn't matter, and then I had bloody arsehole cars driving past me like it's dry and sunny while I'm almost in the gutter..   :008:
Title: Re: MPG Seems Low
Post by: Applecorp on January 02, 2018, 03:54:47 PM
Ok then, I hit 243 miles today and the fuel gauge started flashing, that's roughly 290 to empty, fecking awesome, I haven't been that gentle with her either (haven't gone over 6k revs yet though, still not had first service).

Well impressed.   :152:
Title: Re: MPG Seems Low
Post by: chezza on January 02, 2018, 04:47:51 PM
Thats good to know - I have 83miles on mine now and the average is similar to what you were reporting earlier in the thread.  Im still on the fuel that came with the bike so yet to do a calculation.  Will update the group when I do tho.
Title: Re: MPG Seems Low
Post by: Applecorp on January 02, 2018, 04:59:38 PM
Yes, it seems to have improved quite well over the course of my second tank full, going from about 13 miles per litre on the first tank, to around 16-17 miles per litre now, and from what people say it could improve even more still.
Title: Re: MPG Seems Low
Post by: Applecorp on January 03, 2018, 01:02:52 PM
Fuel gauge appears to be absolutely bang on. I filled her up this morning after riding only a few miles since the gauge started flashing and got 14.7 litres in the tank. That is exactly 2.8 litres left in the tank when the gauge started to flash. Which is what the manual states.

So yeah, about 290 miles to empty for me.   :002:
Title: Re: MPG Seems Low
Post by: chezza on January 05, 2018, 09:28:33 AM
morning - doing fuel calcs this morning, becomes a bit of a game/obsession (must watch road not mpg gauge) !

So, 82 miles into my last fill up and the fuel gauge reckons I've used 1.1 Gal's - at my calculation thats approx 74mpg (Trip A based computer average is stating 70MPG).  Also, at this rate of use I estimate a 280mile tank range assuming 74mpg and 17 litre tank.

Now time to wait for the next fill up for true final figures.

All said, unless my maths is way out I am massivly happy with this, and on a bike that has only done 212 miles.
Title: Re: MPG Seems Low
Post by: Applecorp on January 05, 2018, 10:05:55 AM
That's about on par with what I'm getting, good isn't it.
Title: Re: MPG Seems Low
Post by: chezza on January 05, 2018, 10:21:24 AM
yeah over the moon - it was one of the selling points of the bike (and a justification to management indoors).

The SV I thought was frugal at ~55mpg but this is great.  And I'm well chuffed with the bike, as I mainly commute these days it ticks so many boxes, and actually I find it handles much better and thats in the rain with trailmax tyres, maybe due to my height v the geometry of the bike, dunno...
Title: Re: MPG Seems Low
Post by: Applecorp on January 05, 2018, 10:32:45 AM
I had an old SV650s (2000) and like you was happy with the MPG (great engine too, I miss her, but not the riding position!)

Until I got the CB500X.   
Title: Re: MPG Seems Low
Post by: Applecorp on January 21, 2018, 02:43:00 PM
Filled her up again today just after the low fuel gauge started to flash, got 14.3 litres in with the bike upright. Trip said 221 miles, works out to about 70mpg.

Extremely happy with that given it was 95% short commutes to work in the city.
Title: Re: MPG Seems Low
Post by: SnowOwl on January 21, 2018, 05:14:36 PM
Is that UK-MPG?  The best I have seen is 76 mpg-us riding county roads at 55 mph and less.

My average commuting is 66 mpg-us.  That includes 3 miles interstate, 6 miles county and 7 miles city of riding one way.

A longer route to work is 1 mile interstate, 12 miles county and 7 miles city one way.  I average 69 mpg-us on that route and it takes about 8 minutes more to get there.

The longer route is 4 miles more and gets me 3 mpg-us better mileage, so it really doesnít save me any money.
Title: Re: MPG Seems Low
Post by: Applecorp on January 21, 2018, 05:15:44 PM
Yes that's UK mpg.
Title: Re: MPG Seems Low
Post by: Applecorp on February 04, 2018, 05:09:56 PM
Went out for the first time in weeks for a non commute ride, (about 30 miles) and was delighted to see the average mpg on the computer just keep gradually going up and up and up, even though I was giving the throttle a fair amount of abuse for half of it. Started off at 67 mpg and by the time I got home it was 70 mpg.

Conclusion, short commutes give good mpg, long rides (no matter how you ride) give better mpg.
Title: Re: MPG Seems Low
Post by: retmotor on February 04, 2018, 05:19:47 PM
I have to wonder if that first tank of gas you had wasn't fresh.  That'd make a difference.  A Harley rider told me if I wanted better MPG to switch gas stations.  He'd tested all the ones in his town and came to the conclusion he got better mileage from one than the others. 
Title: Re: MPG Seems Low
Post by: Applecorp on February 04, 2018, 05:44:13 PM
That may be a factor, I've heard that the fuel isn't that good sold at Tesco (you may have heard of them), might try some premium stuff from Esso or BP.
Title: Re: MPG Seems Low
Post by: Pocketpete on February 04, 2018, 06:53:38 PM
I get 73mpg in heavy congested Manchester roads. Quite happy with that. If I got on a run usually get a touch more around 75 or 76. I'm pretty heavy and have full panniers and top box.

Bikes not really changed much since I ran it in. Did a run to the lakes and got nearly 80 on the way back.
Title: Re: MPG Seems Low
Post by: AJC500 on February 05, 2018, 07:28:24 AM
I run my car and bike on standard Tesco supermarket fuel and never have any problems......I think there can be a bit of brand snobbery amongst us petrol heads!
Title: Re: MPG Seems Low
Post by: marcusfordus on February 05, 2018, 08:25:14 AM
I don't know who supplies fuel to my local Co-op petrol station, but it's so far the only place I've filled the bike.
I have the roads to myself at 6am and it's the free flowing aspect of getting from A-B that gives me the great mpg. Too many average speed cameras en route keeps me below 50mph and that equates to 83mpg. Boring riding though !
Title: Re: MPG Seems Low
Post by: Applecorp on February 05, 2018, 08:36:57 AM
Indeed.

I'm not complaining, I "only" get 65 mpg on my commutes but that is very good for such a short commute into the city. Way better than any other bike I've had.
Title: Re: MPG Seems Low
Post by: Mark65 on February 05, 2018, 08:39:46 AM
*Originally Posted by Applecorp [+]
That may be a factor, I've heard that the fuel isn't that good sold at Tesco (you may have heard of them), might try some premium stuff from Esso or BP.
Applecorp, I only use Esso Super Unleaded, Esso replied to me and said that they don not use ethanol in this fuel for most of the UK.

Thank you for contacting Esso Customer Care.

The majority of unleaded 95 Octane petrol sold in the UK contains 5% ethanol as required under the Governmentís Renewable Transport Fuels Obligation (RTFO).

There is currently no requirement for renewable fuel (such as ethanol) to be present in super unleaded (97 grade petrol).

Esso super unleaded petrol (Synergy Supreme+ Unleaded 97) is ethanol free (except in Devon, Cornwall, the Teesside area and Scotland) and we have no current intention to add ethanol to Synergy Supreme+ in other areas of the UK.

We would therefore advise anyone who has concerns about the presence of ethanol in petrol to use Synergy Supreme+ Ė providing they do not fill up in Devon or Cornwall, the Teesside area or Scotland.

Yours sincerely,

Kristof Gergye

End Consumer & Customer Care Assistant

Customer Service, Fuels & Lubricants, EAME

Office: +49/69/50071428

Fax: +49/69/95307947

customercare-ece@exxonmobil.com

ExxonMobil Business Support Center Hungary Limited Liability Company

Registered seat of the Company: VŠci ķt 81-85., 1139 Budapest, Hungary

Registered with the Court of Registry of Metropolitan Tribunal

Company registration No.: 01-09-721052.
Title: Re: MPG Seems Low
Post by: Applecorp on February 05, 2018, 08:44:17 AM
Is ethanol bad then?
Title: Re: MPG Seems Low
Post by: John1411 on February 05, 2018, 12:14:57 PM
*Originally Posted by Applecorp [+]
Is ethanol bad then?

Would seem to affect fuel consumption:

https://www.whatcar.com/news/new-e10-fuel-will-cost-uk-motorists/

and not so good for older vehicles as well:

http://www.telegraph.co.uk/motoring/classiccars/9108430/The-ethanol-threat-to-classic-cars-and-bikes.html
Title: Re: MPG Seems Low
Post by: EscCtrl on February 05, 2018, 01:25:26 PM
*Originally Posted by Applecorp [+]
Is ethanol bad then?

It can be. The CB line up should be set up with the proper parts to not be damaged by ethanol laden fuels. Older bikes fuel systems can be damaged by ethanol. It does bring down fuel mileage. I noticed this in my car. I went from 31 US mpg to 27 mpg on the interstate. I think you guys in EU call it the motorway. Fortunately for some of us in the US, we have some fuel stations that carry straight gasoline without ethanol. I don't know how fuels are handled outside the US.
Title: Re: MPG Seems Low
Post by: retmotor on February 06, 2018, 01:39:13 AM
*Originally Posted by Applecorp [+]
Is ethanol bad then?

Ethanol is of the devil.  The real reason corn is in our fuel is the corn lobby is wealthy, influential and our politicians are corrupt.

There's tons of info on the web about it.  Enough at least to turn me into a half baked conspiratorial cynic on the topic.  :156:
Title: Re: MPG Seems Low
Post by: Applecorp on April 03, 2018, 05:15:44 PM
*Originally Posted by EscCtrl [+]
If your 2017 only has 200 miles on it, the engine is still tight and not fully broken in. My mpg came up after about 1500US miles. No matter how I load my bike, I get roughly the same mpg, 68US mpg. I ride her like I stole her most of the time.

I've noticed my MPG has started to increase even more lately, I'm thinking a combo of the bike being fully broken in now I'm at about 1450 miles, and also the weather is warming up.

Either way I'm very happy, filled her up and went about my short commute (no other riding) the last 3 weeks and I calculated about 295 miles to empty, which is exceptional.   :002:
Title: Re: MPG Seems Low
Post by: EscCtrl on April 03, 2018, 08:42:16 PM
*Originally Posted by Applecorp [+]
I've noticed my MPG has started to increase even more lately, I'm thinking a combo of the bike being fully broken in now I'm at about 1450 miles, and also the weather is warming up.

Either way I'm very happy, filled her up and went about my short commute (no other riding) the last 3 weeks and I calculated about 295 miles to empty, which is exceptional.   :002:

That's good news to hear.  :062:
Title: Re: MPG Seems Low
Post by: Applecorp on May 18, 2018, 08:08:33 AM
Filled up the bike and got a staggering 52 miles from the first fuel gauge segment yesterday, normally get 40-45. Didn't ride any differently than normal so don't know what happened there, but I'm not complaining.   :152:
Title: Re: MPG Seems Low
Post by: AJC500 on May 18, 2018, 08:16:48 AM
Funny how it can vary - last tankful I was (unusually) riding a lot of motorways at faster speeds, overtaking lines of trucks and cars and generally getting where I wanted to be quickly, and mileage dropped to (UK) 80ish mpg, this tankful I've been cruising around and it's nudging the 90's.

Both great of course, but 10mpg difference, just down to speed and acceleration/overtaking....
Title: Re: MPG Seems Low
Post by: Applecorp on May 18, 2018, 08:23:26 AM
It's amazing what mpg you can get out of the bike when wringing it's neck, so to speak. It's doesn't drop massively from conservative use.
Title: Re: MPG Seems Low
Post by: Aymeric on June 15, 2018, 10:52:07 PM
So I got my Bike not too long ago second handed there was 7500miles on it.
So far I have done two refile and both times I only managed to do around 140-160miles on it before I had to fill her up. It was flashing atlest for 5miles, but then could only put 14L in the tank. Meaning there was another 3L still in it. The dashboard is telling me i'm doing around 10mile/L
That seams low.
Should I be able to do around 200miles with each tank?
When it starts flashing how much can I push it and should I
Title: Re: MPG Seems Low
Post by: Irishrover on June 15, 2018, 11:31:37 PM
300 miles is easily doable on this bike. When reserve flashes I do about another 60 miles before filling. The on-board fuel computer is miles out on my bike.
Title: Re: MPG Seems Low
Post by: Markdarren on June 16, 2018, 06:02:46 AM
My best MPG (UK) was this week at 103.8. I use the bike 4 days a week, (= 385 miles) & that's all year round. Daily riding being on country lanes, motorway & city traffic to get to work. I guess that combination of riding brings out the best for the MPG. The bike is a 2016 with 20.5k miles on the clock with the only additions being front LED spot lights & extended front fender. The valve clearances were within spec at 16k.
Title: Re: MPG Seems Low
Post by: Applecorp on June 16, 2018, 08:15:56 AM
*Originally Posted by Aymeric [+]
So I got my Bike not too long ago second handed there was 7500miles on it.
So far I have done two refile and both times I only managed to do around 140-160miles on it before I had to fill her up. It was flashing atlest for 5miles, but then could only put 14L in the tank. Meaning there was another 3L still in it. The dashboard is telling me i'm doing around 10mile/L
That seams low.
Should I be able to do around 200miles with each tank?
When it starts flashing how much can I push it and should I

10 miles a litre is very poor for this bike, something is not right there. I think at worst (revving the crap out of it) you should expect to reach 200 miles before the low fuel indicator flashes.

Ignoring the computer and going by your own figures (160 divided by 14) the computer isn't actually far off, so again very poor mileage there. On my short commutes into the city I can still get 240+ miles (17miles per litre) before the gauge flashes.

I'd get it looked at if I were you.

PS. Regarding the computer though, mine is actually very accurate now (it was off off by about 10 mpg when I bought the bike new), It averages 73 mpg on the computer and that is pretty much what I calculate it to using fuelly.
Title: Re: MPG Seems Low
Post by: Markdarren on June 16, 2018, 11:17:36 AM
In my last fill up I did 276.5 miles for 12.22 lts with still 1 bar left. I guess I could do around 320-330 miles to a full tank.
Title: Re: MPG Seems Low
Post by: Irishrover on June 16, 2018, 12:11:02 PM
*Originally Posted by Markdarren [+]
In my last fill up I did 276.5 miles for 12.22 lts with still 1 bar left. I guess I could do around 320-330 miles to a full tank.

You could and I have done. 330 miles is as far as I want to push it.
Title: Re: MPG Seems Low
Post by: EscCtrl on June 16, 2018, 04:38:09 PM
I would be doing a tune up at 10l/mile. Air filter change, oil change, spark plug change, and valve adjustment. If the PO really rode the bike hard and stayed in the upper RPMs, then the valves could go tight prematurely.
Title: Re: MPG Seems Low
Post by: Longshanks on June 21, 2018, 07:03:56 PM
I've only just started using Fuelly and after two fill ups I was getting a dissapointing 50.9 to the gallon.

I then had a look at my settings and realised I'd selected US of A gallons........now sorted and a much more respectable 70.9mpg  :080:
Title: Re: MPG Seems Low
Post by: Applecorp on June 21, 2018, 07:34:17 PM
Haha, yes that's about right on average for this bike.
Title: Re: MPG Seems Low
Post by: jsonder on June 21, 2018, 11:08:56 PM
You "how far can I go on a tank" folks do realize that the fuel is used to cool the fuel pump.  When the fuel gets quite low, the ability to cool the fuel pump decreases.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 22, 2018, 01:18:23 AM
Never got more than 220-230 miles out of a tank, and that was pushing it, usualy fill well before 200 miles. Don't see any point in it.
 I'm getting somewhere close to 60-65 mpg in town and a bit more on country roads. Perfectly happy with that. I didn't buy to save fuel, I ride it the way one is supposed to  :017:
Title: Re: MPG Seems Low
Post by: EscCtrl on June 22, 2018, 02:04:06 PM
*Originally Posted by CB-500-X [+]
Never got more than 220-230 miles out of a tank, and that was pushing it, usualy fill well before 200 miles. Don't see any point in it.
 I'm getting somewhere close to 60-65 mpg in town and a bit more on country roads. Perfectly happy with that. I didn't buy to save fuel, I ride it the way one is supposed to  :017:

Really? As hard as I ride, I still get 260-300 miles per tank and I don't run the bike very far after the fuel indicator light starts flashing.
Title: Re: MPG Seems Low
Post by: SnowOwl on June 22, 2018, 02:29:47 PM
I fill up shortly after it gets down to 1 bar and I put in 3.2 to 3.4 US-gallons.  Have only gone to flashing twice.  Its normally at 210-220 miles at that point with plenty of range left.  With a 40 mile round trip commute I don't like to let it get lower than that.  The current average is 65.4 MPG-US.  That includes everything from country 2 lane to Interstate highway and rainy slow days to bright sunny hooligan days.  If I can keep the hooligan at bay it gets north of 70 MPG-US, on tanks when riding is "fun" the average is closer to 63 MPG-US.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 22, 2018, 04:26:27 PM
Thatís about my experience. I donít let it go quite to flashing. That probably the difference.
Title: Re: MPG Seems Low
Post by: SnowOwl on June 22, 2018, 04:44:28 PM
Looking back over my records, the most miles I have put on a tank is 262 and it took 3.8 Gal-US to fill up.  So I had .5 Gal-US left and could have gone another 35 or so miles.
Title: Re: MPG Seems Low
Post by: Applecorp on June 22, 2018, 08:07:49 PM
*Originally Posted by EscCtrl [+]
Really? As hard as I ride, I still get 260-300 miles per tank and I don't run the bike very far after the fuel indicator light starts flashing.

That's my experience, my average mpg goes down a little when I ride hard but I still get at least 260 to a tank.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 23, 2018, 12:10:50 AM
How much is left in the tank when there one solid (not flashing) bar showing ?
Title: Re: MPG Seems Low
Post by: Markdarren on June 23, 2018, 06:49:50 AM
The X has a 17 lts tank.
Each bar would be around 2.33 lts.
So the last solid bar with res would be 5.33 lts.
Title: Re: MPG Seems Low
Post by: EscCtrl on June 23, 2018, 04:55:35 PM
*Originally Posted by CB-500-X [+]
How much is left in the tank when there one solid (not flashing) bar showing ?

It usually takes 3.8 to 4.2 gal to fill back up to the little silver thing at the tank opening. So I probably have a half gallon or a little less.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 23, 2018, 07:47:04 PM
*Originally Posted by Markdarren [+]
The X has a 17 lts tank.
Each bar would be around 2.33 lts.
So the last solid bar with res would be 5.33 lts.
Pretty sure that gauge is not linear since itís a float based gauge. Trying to figure out how many miles with I have with one solid bar left
Title: Re: MPG Seems Low
Post by: Applecorp on June 23, 2018, 08:01:31 PM
I guess it's different for everyone but I have estimated to get about 80 miles once it hits the last bar.
Title: Re: MPG Seems Low
Post by: Dr Strange on June 23, 2018, 11:34:25 PM
Mines a 2013 and i brimmed the tank today after the gauge started flashing and i got just under 14 litres in, so with the last bar flashing there was supposedly 3 litres left which by my reckoning is  approx 50 miles.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 24, 2018, 01:47:21 AM
*Originally Posted by Applecorp [+]
I guess it's different for everyone but I have estimated to get about 80 miles once it hits the last bar.
Wow that's quite a bit.... good to know how far I can push it if needed. Thank all.
Title: Re: MPG Seems Low
Post by: Irishrover on June 27, 2018, 04:36:32 PM
Got an amazing 337.5 miles from my tank today, it was flashing with 0.3 gallon used.
Using fuelly it's my best ever at 95.5mpg.  :046:
Title: Re: MPG Seems Low
Post by: catstevecam on June 27, 2018, 06:08:41 PM
*Originally Posted by Irishrover [+]
Got an amazing 337.5 miles from my tank today, it was flashing with 0.3 gallon used.
Using fuelly it's my best ever at 95.5mpg.  :046:
Blimey - that's some mileage - must have been the heat (? hottest day of the year ?)
 :152:
Title: Re: MPG Seems Low
Post by: Applecorp on June 27, 2018, 07:46:14 PM
Amazing, and one of the main reasons I bought the bike. Still really impressed I can get to about 240-250 miles on my short commute before the low fuel gauge flashes. It destroys all the other bikes I've had in terms of fuel efficiency. Even riding pretty hard can result in still great mpg.
Title: Re: MPG Seems Low
Post by: Pocketpete on June 28, 2018, 06:53:23 PM
Had mine for 2 years. 73 mpg virtually all the time. I do a lot of in and out of traffic. If I do a run I get a touch more. If I hammer it a touch less. Definitely gets better as the engine runs in.
Title: Re: MPG Seems Low
Post by: CB-500-X on June 28, 2018, 11:46:17 PM
*Originally Posted by Irishrover [+]
Got an amazing 337.5 miles from my tank today, it was flashing with 0.3 gallon used.
Using fuelly it's my best ever at 95.5mpg.  :046:
Was it on a trailer or the in the back of a truck ?  :084:
Title: Re: MPG Seems Low
Post by: EscCtrl on June 29, 2018, 01:19:37 AM
*Originally Posted by CB-500-X [+]
Was it on a trailer or the in the back of a truck ?  :084:

Imperial gallons go much further per mile.  :169:
Title: Re: MPG Seems Low
Post by: Applecorp on July 20, 2018, 08:43:49 PM
*Originally Posted by Pocketpete [+]
Had mine for 2 years. 73 mpg virtually all the time. I do a lot of in and out of traffic. If I do a run I get a touch more. If I hammer it a touch less. Definitely gets better as the engine runs in.

I'm noticing this. At about 3000 miles now and I am purposefully trying to vary how I ride to just see what mpg I get (short journey's, longer cruising, high speed runs, riding hard, etc) and it just seems that no matter what I do it barely changes, as you say maybe a slight increase or decrease. I still get a superb 250 miles until the low fuel gauge flashes on average.

Love this bike.
Title: Re: MPG Seems Low
Post by: Lemonsniffer on July 22, 2018, 04:24:24 AM
 I also bought a brand new 2017 X. I was getting 63 mpg on the instruments. Mine went up about 7 mpg after the 600 mile service. The run-in oil might be different than the normal oil. It also feels a lot quicker, but that could be me running it harder with peace of mind knowing is freshly serviced. Best of luck on your adventure!
Title: Re: MPG Seems Low
Post by: Viperx on September 17, 2018, 12:06:46 AM
Check your chain tension. Took mine offroad for a few days. Lost 6mpg avg during my regular commute route in the weeks following. Oiled chain, replaced air filter- no change. Checked tension and it was 1-3/4Ē inches, which is technically in spec. Did 2 flats CW on adjusting screws- chain was then at 1-1/2Ē tension which is in spec. Immediate jump in mpg back up to what I am used to. Seems the CB is really sensitive to chain slack
Title: Re: MPG Seems Low
Post by: NoFret on September 18, 2018, 12:33:36 AM
I have a 2016 with just under 10,000 miles and I get 54.1 mpg.
Title: Re: MPG Seems Low
Post by: Pocketpete on September 18, 2018, 07:24:56 AM
Seems quite low. I'm on 11000 now and still getting between 70 and 76. Running in traffic with the odd longer run out. Can't seems to get it to vary from this by much even when I thrash it a bit.
Title: Re: MPG Seems Low
Post by: SnowOwl on September 18, 2018, 01:54:11 PM
Keep in mind the difference between US gallons and UK gallons.

54.1 US-MPG = 64.97 UK-MPG

Having said that, I have averaged 65.9 US-MPG over the past 12 months.  That included some hard and fast riding.  Over the past 4 tanks riding it easy I am averaging 72.58 US-MPG.

The bike is over 11,000 miles now.
Title: Re: MPG Seems Low
Post by: Applecorp on September 18, 2018, 02:58:18 PM
If there's one thing I miss about my old 500X it's the MPG. I'm getting about 45-50 mpg (UK) on my Tracer 900 and that's riding fairly conservatively, not a patch on the little Honda.
Title: Re: MPG Seems Low
Post by: NoFret on September 18, 2018, 03:58:34 PM
Im just basing that on the CBX Dash indicator so not sure if that is really accurate.
Title: Re: MPG Seems Low
Post by: ThirtyOne on December 17, 2018, 04:20:24 PM
*Originally Posted by NoFret [+]
Im just basing that on the CBX Dash indicator so not sure if that is really accurate.

According to my dash I'm getting about the same. I have been riding in the city since I got the bike and my MPG isn't anywhere near what it's "supposed" to be. Bikes generally need to ride a little more aggressively in this city and I'm also enjoying my new bike.

Took a longer ride yesterday which was 120 round trip. Filled up before I left. All highway crossing 2 paved mountain ranges with 50-65mph sweepers if you stay in it. Two valleys of perfectly flat/straight. We also have a massive cold front ripping through, so there were 30mph head/side winds all day. When I got home, the be bike read 54mpg average. Keep in mind I was 3/4 to WOT blipping between 4th-5th for the mountain sections. Not bad at all.  :305:
Title: Re: MPG Seems Low
Post by: NoFret on December 17, 2018, 04:47:45 PM
I also have the Rally Raid lvl3 kit intsalled. The tubed tires might be the culperate.

Thoughts?
Title: Re: MPG Seems Low
Post by: ThirtyOne on December 17, 2018, 04:54:12 PM
*Originally Posted by NoFret [+]
I also have the Rally Raid lvl3 kit intsalled. The tubed tires might be the culperate.

Thoughts?

Generally speaking a taller bike will yield lower MPG. I don't know how much of a difference the L3 kit would affect the MPG of the Honda. If you have knobbies I would assume that those would also affect your MPG.

The biggest factor is going to be your right hand. Try short shifting a half tank or so and do the math. RPM is really what eats fuel.
Title: Re: MPG Seems Low
Post by: NoFret on December 17, 2018, 05:03:04 PM
I'm running e705 tires. No knobbies and try to stay below 5k on rpms when riding around.
Title: Re: MPG Seems Low
Post by: Markdarren on December 17, 2018, 06:07:48 PM
My best MPG (UK) was 104 over 3 days commuting  276.1 miles with still 1 bar of fuel left. I commute every day (97 miles), all year round and my average mpg is 95 - 98 in the summer and 92 - 95, in the winter. Riding country lanes, motorway and city to work. The 471cc engine is perfect for this commute.
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2018, 07:48:13 PM
It's an impressively frugal engine.

What set this bike apart for me was the on board computer was actually pretty much bang on with the mpg in real world terms comparing with Fuelly after the bike was fully run in from new. My Tracer 900 (with 5000 miles on the clock) is way off. Dash says 53, Fuelly says 44.
Title: Re: MPG Seems Low
Post by: Marv_ on December 17, 2018, 08:39:52 PM
I normally find the onboard computer on my 2017 bike under-reads by a few MPG.

My record earlier this year out of a tank was 101 MPG (UK). Much like Mark, I normally get around 95-98 MPG. TBH, when I was looking into buying a CB500X, I didn't realise they're this economical. Amazing efficiency!

I wonder if the 2019 display allows a reading which goes higher than 99.9MPG?  :016:
Title: Re: MPG Seems Low
Post by: Applecorp on December 17, 2018, 08:53:20 PM
*Originally Posted by Marv_ [+]
I didn't realise they're this economical. Amazing efficiency!

Crazy isn't it, there are 125's that aren't much better. I was getting about 73 mpg on my short 12 miles round trip commute into the city, which is pretty amazing.
Title: Re: MPG Seems Low
Post by: ThirtyOne on December 17, 2018, 10:50:58 PM
*Originally Posted by NoFret [+]
I'm running e705 tires. No knobbies and try to stay below 5k on rpms when riding around.

Maybe crunch some numbers yourself then. Sounds like the bike's reading is off.
Title: Re: MPG Seems Low
Post by: Markdarren on December 18, 2018, 07:09:16 AM
I always do my mpg calculations online as the on-board computer is always wrong.
Title: Re: MPG Seems Low
Post by: SnowOwl on December 18, 2018, 01:54:53 PM
*Originally Posted by Markdarren [+]
I always do my mpg calculations online as the on-board computer is always wrong.
The only catch to this is you are relying on the onboard odometer to be correct...  There isn't a way to get an absolutely correct MPG reading without calibrating the onboard odometer, so the calculation will always be a ballpark figure.

The only thing that really matters is the $ per month it is costing me compared to my other vehicles.  Since my other commuter is a diesel truck, the difference is both in the mpg and the fact diesel fuel costs more than gas.  I have enough history on both vehicles to be able to calculate I save on average $109 per month in fuel commuting on the bike.  This doesn't even factor in the thrill of riding the bike!
Title: Re: MPG Seems Low
Post by: ThirtyOne on December 18, 2018, 07:21:15 PM
*Originally Posted by SnowOwl [+]
The only catch to this is you are relying on the onboard odometer to be correct...  There isn't a way to get an absolutely correct MPG reading without calibrating the onboard odometer, so the calculation will always be a ballpark figure.

The only thing that really matters is the $ per month it is costing me compared to my other vehicles.  Since my other commuter is a diesel truck, the difference is both in the mpg and the fact diesel fuel costs more than gas.  I have enough history on both vehicles to be able to calculate I save on average $109 per month in fuel commuting on the bike.  This doesn't even factor in the thrill of riding the bike!

Not only in fuel, but consumables like brake pads, tires, etc. Motorcycles for the win.
Title: Re: MPG Seems Low
Post by: BikerBill on January 12, 2019, 05:12:42 PM
Got to agree with the costs issue relative to normal vehicles. My weekly commute is circa 600 miles. My auto car 2L engine struggled to give me 30 mpg. Moved to bike, not only am I getting upwards of 70 mpg, Iím saving literally hours of time.

Upshot, not too concern about running costs as they will always be less that the car, plus itís more fun, even in this cold weather, will be better in the summer!

Oh, and like some others, I tend to ride mine like itís stolen, but I also find I get more throttle control at the higher revs, especially as its less torquey coming out of our always greasy roundabouts!
Just adding my few words!
Title: Re: MPG Seems Low
Post by: UnmzldOx on January 12, 2019, 08:44:47 PM
My recent estmate.

Operating costs (fuel, insurance, fees, maint.  Excludes purchase):
25 mpg car, well used - 0.24 $/mile
65 mpg 500X - 0.17 $/mile
Title: Re: MPG Seems Low
Post by: jsonder on January 13, 2019, 01:34:57 AM
*Originally Posted by ThirtyOne [+]
Not only in fuel, but consumables like brake pads, tires, etc. Motorcycles for the win.

Except for tires!
Title: Re: MPG Seems Low
Post by: AJC500 on January 13, 2019, 01:36:17 PM
*Originally Posted by UnmzldOx [+]
My recent estmate.

Operating costs (fuel, insurance, fees, maint.  Excludes purchase):
25 mpg car, well used - 0.24 $/mile
65 mpg 500X - 0.17 $/mile

Hmmm, I'll need to try this comparison - as I have a smaller car (1200cc) which does 40-45mpg (I don't commute), only needs a very basic service every 2 years and does 20,000 miles to a set of tyres, I think the figures will be a lot closer...Ö..  :084:

Bike's more fun though!!  :001:
Title: Re: MPG Seems Low
Post by: ewryly on January 13, 2019, 08:19:25 PM
*Originally Posted by AJC500 [+]

Bike's more fun though!!  :001:

Hard to quantify, but certainly am important factor, especially if it means you get to de-stress after a challenging day.
Title: Re: MPG Seems Low
Post by: UnmzldOx on January 13, 2019, 08:42:36 PM
The memory of the ride to work and home is worth something, definitely. It's nice to have good, albeit fading, memories to mull over. It's the same effect as a vacation, but can be refreshed daily.

To get total cost of ownership, add your OTD/distance to the operating cost. For me that is 7500 US $ (with gear) / 39000 miles or 0.19 $ for a total of 0.36 $/mile. That improves with added miles, obviously. It could be only 0.23 at 100000 miles. We'll see.
Title: Re: MPG Seems Low
Post by: ThirtyOne on January 26, 2019, 01:06:01 AM
Just did my first real fuel calculation. Filled up at 200 miles and put 3.67gal in. Works out to 54.5 US MPG. That was riding more conservatively to see what the bike could do if I didn't ride it hard. Seems very low.

I have a chain that's in dire need or replacement., many frozen links, and my commute is up a lot of hills. This city has a lot of ridiculous inclines. Will swap out the chain this weekend and continue to test. 60mpg would make me happy.
Title: Re: MPG Seems Low
Post by: uku383 on January 26, 2019, 03:11:12 AM
*Originally Posted by ThirtyOne [+]
Just did my first real fuel calculation. Filled up at 200 miles and put 3.67gal in. Works out to 54.5 US MPG. That was riding more conservatively to see what the bike could do if I didn't ride it hard. Seems very low.

I have a chain that's in dire need or replacement., many frozen links, and my commute is up a lot of hills. This city has a lot of ridiculous inclines. Will swap out the chain this weekend and continue to test. 60mpg would make me happy.

Hey mate. Why don't you hop onto Fuelly and start an account? It's a great way to track your fuel economy and mileage per fill over time, and helps you form a view of what distance you can get out of a tank with different types of riding.

It appeals to the obsessive part of my personality... just wish that carried over to tidying my workspace! LOL
Title: Re: MPG Seems Low
Post by: ThirtyOne on January 26, 2019, 12:33:58 PM
*Originally Posted by uku383 [+]
Hey mate. Why don't you hop onto Fuelly and start an account? It's a great way to track your fuel economy and mileage per fill over time, and helps you form a view of what distance you can get out of a tank with different types of riding.

It appeals to the obsessive part of my personality... just wish that carried over to tidying my workspace! LOL

I'll check it out. I've been keeping track of my car fuel mileage for decades, but never bothered with my bikes.
Title: Re: MPG Seems Low
Post by: UnmzldOx on January 26, 2019, 02:15:05 PM
That seems low. My overall average is 64.6, max of 74, and min of 52, miles per US gal. But, my average speed is only ~50 mph. I've noticed that just adding some speed, 70 instead of 60 mph, for the last 4 miles of my commute will drop mileage from 64 to 62 mpg. I would like to run a full tank at 70 mph to see the effect.
Title: Re: MPG Seems Low
Post by: ThirtyOne on January 27, 2019, 12:37:12 AM
*Originally Posted by UnmzldOx [+]
That seems low. My overall average is 64.6, max of 74, and min of 52, miles per US gal. But, my average speed is only ~50 mph. I've noticed that just adding some speed, 70 instead of 60 mph, for the last 4 miles of my commute will drop mileage from 64 to 62 mpg. I would like to run a full tank at 70 mph to see the effect.

It does, although looking around fuelly shows that low 60s seems to be fairly normal. I wonder if the bad chain and mostly hilly city riding has a lot to do with it. I'm in fuelly now and will be tracking it through there. It's a nice app.
Title: Re: MPG Seems Low
Post by: SnowOwl on January 27, 2019, 03:03:45 AM
*Originally Posted by ThirtyOne [+]
Just did my first real fuel calculation. Filled up at 200 miles and put 3.67gal in. Works out to 54.5 US MPG. That was riding more conservatively to see what the bike could do if I didn't ride it hard. Seems very low.

I have a chain that's in dire need or replacement., many frozen links, and my commute is up a lot of hills. This city has a lot of ridiculous inclines. Will swap out the chain this weekend and continue to test. 60mpg would make me happy.
Is your bike mostly stock?  Or do you have the RR suspension upgrades?  Are you running street tires or off road tires?  Do you have luggage and carry much weight?

My bike is mostly stock except for a 22Ē Madstad windscreen and a 46L topbox.  Iím running PR4ís and if I keep it at 50 mph and lower while cruising small back roads I will see 80+ mpg US.  Running around 55 mph I get 70+.  However, running 60 mph it drops to around 65 mpg and at 70 mph itís around 58 mpg.  A couple times running 80+ mph I would only get about 45 mpg.  Wind drag sucks!

I also see a significant drop in mpg when there is a lot of stop and go like driving in town.
Title: Re: MPG Seems Low
Post by: ThirtyOne on January 27, 2019, 04:14:14 PM
*Originally Posted by SnowOwl [+]
Is your bike mostly stock?  Or do you have the RR suspension upgrades?  Are you running street tires or off road tires?  Do you have luggage and carry much weight?

My bike is mostly stock except for a 22Ē Madstad windscreen and a 46L topbox.  Iím running PR4ís and if I keep it at 50 mph and lower while cruising small back roads I will see 80+ mpg US.  Running around 55 mph I get 70+.  However, running 60 mph it drops to around 65 mpg and at 70 mph itís around 58 mpg.  A couple times running 80+ mph I would only get about 45 mpg.  Wind drag sucks!

I also see a significant drop in mpg when there is a lot of stop and go like driving in town.

It's a RR L1 bike so factory height, brand new TKC70 tires and I keep an eye on the pressure, stock 2013 screen, Givi 46L top box, has a 2 Brothers slip on, speeds are below 60. Generally 45-55mph on highway. To work is highway downhill and home is uphill, with very steep grades. All riding is around the city, and Tegucigalpa is in the mountains, so here there a lot of hills to climb. Pretty much every where I go I'm climbing steeply. I shift around 5k rpm or less. Careful to keep it top gear. Easy accelerations.

One of the main culprits, I'm suspecting, is the chain. Secondly, the topography. Next weekend I may ride out of the city and burn a tank just to see. I'm also adding a Madstad 20" on Monday, it just arrived, so it'll be a mixed bag trying to figure out my low mpg issue.
Title: Re: MPG Seems Low
Post by: SnowOwl on January 27, 2019, 06:27:08 PM
First of all you should replace that chain ASAP.  A lot of stiff links is very hard on the countershaft and rear wheel bearings.  The bearings are getting hammered everytime the stiff links jerk the chain tight as they go around the sprockets, especially the smaller drive sprocket.  If the countershaft bearing gets damaged it will require the engine casing to be split to replace it and that is major expensive surgery.  The wheel bearings are much less expensive and easier to replace, but still a hassle.

With all the steep hills and city stop-and-go you wonít see the same mileage as those of us who are riding long nonstop country roads with gentler hills.  Thereís nothing wrong with your bike, itís just the laws of physics getting in the way.  You should check with other riders in your area who have a similar riding environment and see how their mileage compares to what their bikes are rated at.

Iím sure once you get out on the open road and just cruise for a good long distance you will see a big difference in gas mileage.  Just be sure to replace that chain as soon as you can.
Title: Re: MPG Seems Low
Post by: ThirtyOne on January 27, 2019, 06:38:29 PM
Yep. Replacing the chain this week. Got 10,000 miles out of the factory chain, which sounds about normal for the OEM units.
Title: Re: MPG Seems Low
Post by: SnowOwl on January 27, 2019, 06:43:45 PM
Replaced my OEM chain at 7,800 miles with a DID-VX2.  The bike is at 13,800 miles now and the chain is still in great shape.
Title: Re: MPG Seems Low
Post by: mainjet1 on March 02, 2019, 06:20:31 AM
Snowowl; good info in your reply #201 above.  7800 miles life on stock chain seems nominal.  A replacement of a good DID chain likely will last longer next time around.
Title: Re: MPG Seems Low
Post by: ThirtyOne on May 10, 2019, 02:59:59 AM
Thought I'd update now that I've had a good chance to follow my MPG over some with a new chain and sprockets (stock gearing).

City riding in Tegucigalpa for work (the city is in the mountains so some of the hills here are incredibly steep) has yielded around 63-65 US MPG.

Completely thrashing the bike for the duration of an entire tank (no exaggeration, running 7,500-8k rpm for long intervals chasing liter bikes through the mountains and 90-100mph on the valley floors) usually puts me at about 53-54 US MPG.

Overall, very pleased with my gas mileage. On any of my other bikes, 650 Strom included, usually netted me around 45mpg or less. Definitely impressed with the 500X.