Average miles per full tank of fuel

Discussion in 'Bonneville' started by Almo, May 13, 2014.

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  1. Mick31

    Mick31 New Member

    Jul 5, 2015
    0
    1
    Kettering
    I think it was mapped as I believe pure fitted the arrows from new.
     
  2. thebiglad

    thebiglad Old fart, still riding !

    Sep 25, 2013
    5,064
    1,000
    Central France
    I used to get about 137 mls to a tank and it would take about 11 ltrs to fill up again. So averaged out at 56 mpg.

    My T100 was a fair bit modified and imo ran really well.
     
  3. SixtiesBiker

    SixtiesBiker Well-Known Member

    Feb 13, 2018
    61
    68
    Northern Ireland
    I have a 2017 T120, when I refuel the instrument states 165 miles before refuelling, any thoughts on this being correct?
     
  4. Ken walburn

    Ken walburn Noble Member

    Jun 28, 2017
    888
    300
    Essex
    Refit original cans & see what happens
     
  5. capt

    capt Elite Member

    May 8, 2016
    3,052
    750
    western Australia
    It's not run in until you have a couple thousand miles on the clock ! I have a 2008/9 America, I have 107,000 klms on the clocks ! It was very heavy on fuel for 3,000 odd klms, I got 13 klms ltr on the first tankful, this improved bto 20 klms ltr after 2,500/3,000 klms ! If you want better fuel mileage , get rid of the Air Injection , replace std Air filter with K&N or similar put open pipes/Muffler's on it and get it Tuned by a reputable Dyno operator !! I have done my Bike twice , once on std motor with above improvement mods done and second time after 905cc big bore kit, high compression pistons and porting of the cylinder head, both times I got improved horse power and torque out put by 4 to 5 HP and 3 to 4 ft lbs , now about 65 to 75 HP and 56 to 60 ft lbs, I had to put stiffer clutch springs in to counter HP related clutch slip (std springs slip in the upper 60 HP range) I tow trailers, I have two camper (2 berth) and a cargo (with aerodynamic lid) one weighs 115 kg(camper) other weighs 45 kg.
    Run it in and tune it ! Then you'll get better mileage !!

    Cheers capt.

    I feel a bit like an ECHO ! I keep repeating this, run it in and get it tuned to suit your use/needs, as the emissions/pollution controls aren't there to improve fuel mileage's ! They are there to Stop emissions/pollution and Noise Emissions !
     
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  6. BigCLM

    BigCLM Senior Member

    Nov 30, 2017
    1,017
    243
    San Rafael, CA
    I have a new Street Twin and have been getting 65-70 MPG. But I don't ride too aggressive either. And MPG should improve a bit once the engine is fully broken in.
     
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  7. Rich Bryce

    Rich Bryce Dead Eye Dick

    Sep 18, 2015
    2,987
    1,000
    Bedford
    Hi Almo. Filled to the brim my 865 efi SE gets to 100 miles before the light comes on.

    On my 900 Street Twin, at least 140.

    No idea what mpg those equate to, and I do tend to be a spirited rider.
     
  8. Rudeboy

    Rudeboy Senior Member

    May 2, 2017
    402
    113
    Bristol
    Heres a good tool to calculate your mpg,with all the mods done to the bike Im averaging around 110 to the tank not too bad considering I dont hang around,

    http://www.mpg-calculator.co.uk/
     
  9. Alectron

    Alectron Well-Known Member

    Apr 26, 2018
    112
    93
    Northumerland
    Hi, you don't say which Bonneville you have.
    But my 2016 T120 does just over 200m on a long ride and 160m around the houses so to speak.
    I'm delighted with the bike and ride quality, hope that helps. A
     
    • Like Like x 1
  10. capt

    capt Elite Member

    May 8, 2016
    3,052
    750
    western Australia
    My America gets 320 klm or just about 200 miles before low fuel warning light, 19 litre tank , takes 14 to 16 litres to fill up after light comes on !

    Cheers capt

    EFI motor 905 cc big bore plus port polished and dyno tuning !?
     
    • Like Like x 1
  11. capt

    capt Elite Member

    May 8, 2016
    3,052
    750
    western Australia
    My America gets 320 klm or just about 200 miles before low fuel warning light, 19 litre tank , takes 14 to 16 litres to fill up after light comes on !

    Cheers capt

    EFI motor 905 cc big bore plus port polished and dyno tuning !?
     
    • Like Like x 1
  12. Andreas_CH

    Andreas_CH Member

    Apr 11, 2018
    26
    13
    Switzerland, Rapperswil
    On my new T100 (2018) I get well over 300 km on one tank, average seems to be about 4 liters per 100 km. I've only done 1000 km so far (first service due), riding mostly 50-80 km/h, not going crazy on the revs. Not sure how it may change over time, but surely it won't get worse.

    Andreas
     
  13. Rudeboy

    Rudeboy Senior Member

    May 2, 2017
    402
    113
    Bristol
    Hi its a 2010 865 SE fuel injected the tank takes about 14.5 litres from empty
     
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  14. Alectron

    Alectron Well-Known Member

    Apr 26, 2018
    112
    93
    Northumerland
    Sounds just great. My old Bonnie did about 55mpg most of the time, same engine. Loved the bike.
     
    • Like Like x 1
  15. Rudeboy

    Rudeboy Senior Member

    May 2, 2017
    402
    113
    Bristol
    I am still sort of monitoring after all the mods and the remap when this tank has been emptied I shoud know what its doing its definately over 40mpg
     
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  16. tcbandituk

    Subscriber

    Apr 8, 2016
    2,763
    1,000
    Reading
    I've done a tankful of fuel for two days running, each time I got @120 miles before the light came on.

    Tors pipes fitted, lambda sensors and clean air kit removed with twin pipe TORs map.
     
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  17. tcbandituk

    Subscriber

    Apr 8, 2016
    2,763
    1,000
    Reading
    #37 tcbandituk, May 23, 2018
    Last edited: May 23, 2018
    Finished a tank today

    128 miles until light came on steadily
    133.1 miles until filling up
    12.68 litres put in.
    averaged 47.71 mpg

    Not bad considering I was thrashing it to keep up with Speed Triples etc for a lot of it....:p
     
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  18. Kinjane

    Kinjane Active Member

    Oct 15, 2017
    234
    43
    Bristol, Land of Enger
    #38 Kinjane, May 26, 2018
    Last edited: May 26, 2018
    http://www.fuelly.com/motorcycle/triumph/bonneville_t120/2017

    Been carrying pillion on the last few trips and 200 from a full tank is easily attainable although there'd probably be some walking involved around the 230 mark. So that’s working out at just over 70mpg from my T120 on a gentle ride.
     
  19. Broon

    Broon New Member

    Jun 26, 2018
    20
    3
    Southampton
    The 2014 America has a 19.3 litre tank (about 3 litres remaining when the low fuel light comes on). Generall light comes on around 185 miles and running on vapour at 220 miles. Never run out but pretty close in France last week. Reckon it does around 57 mpg.
     
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  20. Andy-K2

    Andy-K2 Knowledge is power for which I have neither!

    Apr 26, 2017
    324
    113
    Bristol UK
    I commute on my 2012 865 Bonneville, I fill-up the first chance I get when the light come on, some days I ride steady and others with a little more go, I regularly turn out 110 per tank and on a run with Rudeboy I can get around 125, never any more.

    Im a fat git that has pretty much done everything to the Bonneville that I can, exhausts, HF air filters, special tune etc so performance wise without a full race tune she's as good as it gets, I guess if I lost 5-6 stone she would do better on fuel and perform a little better but I'm happy with what she's got. On a long trip I'd allow an average of 120 mile per tank for pricing etc you wont go far wrong with that.
     
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