'Bad' Mpg

[vt6]

What would you generally deem bad consumption from a sports 6, obviously depends how you ride etc. Reason i ask, when i first passed my test i'm sure i was getting about 170 miles to a tank, now its down to 125 i put it down to just getting quicker more confident etc. However the 125 works out about 35mpg - is that particularly 'low' for a cbr 600f, its the only bike i've owned so i dont have a comparison. Cheers

[Coxyzxr]

Probably is slightly low for the cbr 'F' I would say around 38 to 42 around about the norm.

jet kit installed?
Changed exhausts at all?
Different riding style?
Air filter clogged?
Carbs need balancing?
Brakes sticking on at all?
Low tyre pressures?


All those things will affect fuel economy with the worst offenders being at the top and working your way down to the lesser ones.
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[carlnicholson...]

The scope for the MPG you can achieve on a bike is staggering depending on your style. I would say anything in the thirties is acceptable, especially if you are a little spirited.

I would think something in the low forties would be possible if you ride a little more gingerly.

What's it matter though? Bikes are for making the journey fun, if you're not struggling to fund your fuel needs then just bugger it and enjoy the bike.
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[vt6]

Only mods to the bike are crash bungs, micron slip on and double bubble thats it.
I do put it down to my riding style, feel i'm getting a lot quicker, i'm not really fussed at what it mpg it returns, a lot less wouldnt put me off because i love riding its awesome fun. I was just curious as to if 35 is particularly 'bad' as i've not had previous bikes to compare it to.

[carlnicholson...]

For comparison, I regularly eek 50 MPG from the DR!
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[Kickstart]

Hi

Depending on how you ride it will vary, but to be honest for road riding that is pretty poor.

For comparison, 90mph motorway cruising on our ZZR600 returns about 55mpg, maybe a touch more. Tatty old FZR in similar use is managing around 50mpg.

Does it have a dynojet kit fitted?

All the best

Keith
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[vt6]

Just a micron slip on mate, That figure is from my last tank full which has been all country roads, the odd village, then back onto hooning lol.
I'm putting a lot of time into learning / trying ride better / quicker, cant see the slight drop in mpg as a prob though, was just curious.

[Kickstart]

Hi

That is 25% worse. So doing 35mpg now when it used to do 47.

All the best

Keith
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[steppen22]

110mpg on my ybr125. Not sure. 80 on my (leaky carb) ped.

Always humours me when I have "big bikes" behind me in 30's roaring away - burning up the monies just to poodle along behind me. Big bike essentialy castrated by cameras, etc.

If most of your travel is inter city, and you're mostly in thirties (perhaps topping that up to 50), a big bike is..... a sledgehammer for a nut.

On the twisties, on the straights, it's another matter of course.
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[chris-red]

I managed to get 30mpg out of the 125 bandit . The highest I got out of a big bike was 51 out of my TDM900
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[gixerstu]

I have had a gsxr 600 k3 130 mile till light comes it was brand new so I know nothing was wrong with that.
Gsxr 1000, 130 till light comes on once I got it down to 80 from a full tank pretty fast motorway journey
Current bike zx6r 2003 b1h 125 mile till light so its not that bad.

[neatbik]

I get about 42mpg on my S4 generally, but on long motorway trips at about a steady 80mph i'll get about 50mpg

[Gazdaman]

My CBR600 manages about 120miles to about £12.

So call petrol a quid a litre, that's 45mpg.

The GS does the same journey on £9. Which is closer to 60mpg.
But then I once got 190miles to a GSXr 600 tank. It's all about how you ride.

But then air filter/tyre pressures/exhausts will make a difference.

Gaz

[Itchy]

My CBR has varying thirst depending on what it is loaded with ,

in Dirty mode (from far too much airwarrior 3 in the 90s), when I was going at 'high speed' about 85 down to Plymouth to catch my ferry , due to rushing and flappy bits all over the bike ; paniers and the rain covers, tent rain cover flappy water proof jacket and trousers as well as flappy hair not tied back, the CBR would empty its 18 litre tank in 86 miles.


But cleaning her up (namely due to things happening to fall off and it being better weather on the way home it took 2 tank fuls to get home 300 miles on 37 litres I filled up 2 miles from where I dumped the CBR. This included having to filter at sluggish speed about 65 in between traffic from Birmingham all the way to Manchester..

In Spain in Spirited riding it'd give me 115 miles to reserve , while going easy on some sections would give me about 130-140 to a tank full.


The NTV had a serious fuel problem recently it ran super rich after burner rich.... it almost always returns 65mpg no matter how you ride it even when I had about 150 litres of luggage on it running up and down the M6 at at 70mph , but it went pop one day I thought WTF was that...

Airbox was completely filled with crud and was slightly wet, the main jets had fallen out and to conspire with it even more the choke cable had corroded away and jammed on full choke everywhere. It gave me 12 thats right twelve MPG.

Ran it on open carb and replaced the jets and replaced the choke cable and it runs closer to 58mpg now, but it is an aerodynamic brick though..
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[rotax81]

most of it depends on your riding.
fuelling factors also come into it to some extent.

couple of examples........

my track bike (zx636C) does 52 miles to the tank

my road bike (zx636C) does between 100 and 130 to the tank.

same bike, obviously one is caned all the time.

..................................................................................


when i got my road bike it would only do 80 miles to the tank if i took it easy (ish) got it on a dyno and now i get 130 taking it easy (ish) 100 at its worse. the last owner fitted a yoshimura and used a 'off the shelf' map. although it seemed to run ok it obviously was not
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[wristjob]

x miles per tank is a waste of time.
if you really want to calculate your mpg .
brim your tank.
zero your odometer.
ride about for a bit.
brim your tank.
make a note of how many litres went in.
divide miles on the odometer by the litres you put in.
you now have a miles per litre .
divide again by 4.54609.
you now have miles per gallon.

i can get over 50 mpg on a 2000 r1 if i never go above 6000rpm.
i can get less than 30mpg if i rag it a bit.

[Phoenix]

[Seb]

I've managed 60+ mpg out of my Fut when cruising motorways and A roads, town riding generally nets me around 30 to 40mpg. I found my ZZR was a lot more efficient in town, but less so on the motorway.
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[iooi]

[Kickstart]

[Kwaks]

Age of bike is a factor as well, a new bike very often burns more fuel than an older counterpart in order to comply with emissions restraints brought in when it was smog that was gonna kill the world.
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[Pie-Roe]

[rotax81]

too much high revs will use more fuel as well as too much low revs.

you are aiming for roughly mid revs on a four cylinder where the torque comes in. mine is between 6,500 and 8,000 rpm where economy is best.
(rev limiter is just over 16,000rpm)
on a twin it will be lower revs. not familiar with twins myself but imagine it would be around 5,000rpm.
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Audi A4 Avant 1.9TDi and VW Transporter 2.5TDi 888 Special (no mot and tax lol)

[Flip]

Probably getting 30 odd out of mine. Bloody big engines.