Fuel Milage - new bike
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Thread: Fuel Milage - new bike

  1. #1
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    Default Fuel Milage - new bike

    I’ve finally picked up my new 2018 M109R BOSS. Fantastic bike and a beast I’m still learning to master. This is my first “big” bike.

    I previously had a Yamaha XVS650 Custom that had a 16 L tank. With 95 unleaded I would avg around 250km.

    The M109R has a 19.5 tank. I’m assuming that the M109R will consume more fuel per km due to larger size of engine and heavier weight of bike.

    The dealership filled the tank before I took it and the fuel gauge showed as full. The fuel warning started flashing and I filled up after 93km of riding. The tank had around 4L left.

    I was a little shocked with the milage. Is this because it is a new bike? I’m not a “racing” rider, so I haven’t been gunning it everywhere.

    With the larger tank, I was expecting to get around the same km as the 650 before filling up again (250km), but less than 1/2 that... is that normal?

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  3. #2
    Very Active Member thevili's Avatar
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    Quote Originally Posted by Jerbs View Post
    I’ve finally picked up my new 2018 M109R BOSS. Fantastic bike and a beast I’m still learning to master. This is my first “big” bike.

    I previously had a Yamaha XVS650 Custom that had a 16 L tank. With 95 unleaded I would avg around 250km.

    The M109R has a 19.5 tank. I’m assuming that the M109R will consume more fuel per km due to larger size of engine and heavier weight of bike.

    The dealership filled the tank before I took it and the fuel gauge showed as full. The fuel warning started flashing and I filled up after 93km of riding. The tank had around 4L left.

    I was a little shocked with the milage. Is this because it is a new bike? I’m not a “racing” rider, so I haven’t been gunning it everywhere.

    With the larger tank, I was expecting to get around the same km as the 650 before filling up again (250km), but less than 1/2 that... is that normal?
    Don't panic,

    they obviously did not fill it up to the top. The fuel gauge is waaaay off! You will get eventually an average ~ 6.5 L/100 km.

    Gauge shows still "Full" even when tank is half empty, then it goes down rapidly. Everyone will confirm that... Keep filling it up as close

    as possible to the same top every time and mark down the amount it took and after how many Km. Zero down the odometer every time...
    Last edited by thevili; 03-30-2018 at 09:24 AM.
    M109R 2011 Black, 2" lowering bones, air horn, flash to pass garage door opener, Brakeaway Cruise Control, V-stream windshield, Back Off Brake hold, OEM engine guards, Cobra One Piece rear luggage carrier, Cobra Tri Pro 2 in 1 Black exhaust, Cobra FI 2000 AT fuel processor.

  4. #3
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    Thanks so much for the info. Good to know about the gauge. I was getting a little worried!

    I thought full meant full haha. I’ve filled to full now, so I’ll see how many km’s I can get from the tank.

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    Very Active Member NoSetFine's Avatar
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    Yup what Thevili said. I do not ride gently and average 7 L/100km.

    Congrats and enjoy. We don't buy these for their fuel efficiency. Ha. 🙂


  7. #5
    Very Active Member FlyingCircus's Avatar
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    Quote Originally Posted by Jerbs View Post
    I’ve finally picked up my new 2018 M109R BOSS. Fantastic bike and a beast I’m still learning to master. This is my first “big” bike.

    I previously had a Yamaha XVS650 Custom that had a 16 L tank. With 95 unleaded I would avg around 250km.

    The M109R has a 19.5 tank. I’m assuming that the M109R will consume more fuel per km due to larger size of engine and heavier weight of bike.

    The dealership filled the tank before I took it and the fuel gauge showed as full. The fuel warning started flashing and I filled up after 93km of riding. The tank had around 4L left.

    I was a little shocked with the milage. Is this because it is a new bike? I’m not a “racing” rider, so I haven’t been gunning it everywhere.

    With the larger tank, I was expecting to get around the same km as the 650 before filling up again (250km), but less than 1/2 that... is that normal?

    When I'm completely full my light will come on at about 200 klms and I'm on the throttle hard every chance I get

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    My 109r makes about 40 to 42 mpg (64 to 67 km per gallon ) at highway sustained speeds of 80 to 90 mph , so it is pretty good .
    My last longer trip on it was 163 miles away one way and it took exactly 4 gallons to refill it and the light never went on . Then , later on when I got back , it took 4.1 gallons to refill , so it is consistent . The light never got on either . I use 93 octane gas .
    Of course, rides on the city are more wasteful because the stop and go , the braking continuously , etc , so it consumes more fuel .
    Another thing : the needle on the gas gauge will start moving at around 100 miles or so , and then it will move down fast .
    Last edited by josey88; 03-31-2018 at 09:01 AM.

  9. #7
    Very Active Member Bobby1048's Avatar
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    Default fuel mileage - new bike

    "Sally" wasn't new when I bought her. Kind of the same boat as you. But I have been getting about 160-170 miles on a tank. But depends how hard you twist the throttle. Keep the dirty side down brother
    US Army Retired
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    I named the truck wife named the bike

  10. #8
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    Sorry for the delay...busy busy busy. Thanks for your experiences lads.

    After a couple of long and local rides, I’ve been focusing on when the gauge leaves the Full status and the first notch disappears:
    95 grade fuel: happens at ~120km
    98 grade fuel: happens at ~150km

    My current tank of fuel, which is 98, I’ll monitor until it goes to almost empty (light flashing) and then make an update.

  11. #9
    Very Active Member FlyingCircus's Avatar
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    Mine is 200K ish when light turns on

  12. #10
    Very Active Member M109Dreamer's Avatar
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    Quote Originally Posted by FlyingCircus View Post
    Mine is 200K ish when light turns on
    Holy s***,
    I thought for a sec I was getting screwed with my mileage. Then I remembered your from up north....

    My light comes in around 140 miles

    Sent from my SAMSUNG-SM-G920A using Tapatalk

  13. #11
    Very Active Member FlyingCircus's Avatar
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    Quote Originally Posted by M109Dreamer View Post
    Holy s***,
    I thought for a sec I was getting screwed with my mileage. Then I remembered your from up north....

    My light comes in around 140 miles

    Sent from my SAMSUNG-SM-G920A using Tapatalk
    Sorry
    So that would be 124 miles

    But I've never gone through a tank just touring down the highway so i figure I'd be in same range as you

    Sent from my LG-H933 using Tapatalk

  14. #12
    Very Active Member Chilly Rock's Avatar
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    Most I've gotten on a full tank is 160 miles of highway riding with the last 10 miles of solid yellow light. Thought i was gonna run dry before finding a gas station. I probably could have gotten more miles on full tank if I wasn't cruising at 80-90mph for half of the ride.

  15. #13
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    New to the 109 life but loving it
    Took a nice slow trip out to the country side and cruising two up at a steady 130kph with the odd burst to 160+
    was impressed to get 300km+ (187miles)
    Filled up with 18.3L so another 20kms to empty.

  16. #14
    Very Active Member cbxer55's Avatar
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    It's an 1800, it's going to be thirsty. Anyhow, in experimenting, I have found that every time the fuel "gauge" drops from five bars to four, it's at exactly half tank. Tank holds 5.2 gallons, fill it up right when the first bar drops, it takes 2.6. So for me anyway, I think it's just a handy reminder that you have a half tank left. And act accordingly. I've gotten as much as 192 miles without stopping, but that was back when the bike was mostly stock, just different intakes. Once you do the exhaust and put some kind of fuel programmer on the bike, it'll get worse. LOL

    Hey, my 1340 cc B-King isn't much better!
    SILVER 2006 M109R.
    BLACK 2008 B-KING


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    I was concerned too when I first got my 109. I find I'm filling up my tank every 250Km or so. Not the greatest but I don't baby her either. I bought my 109 for power and handling. Fuel mileage wasn't a big selling point for me knowing full well she's a beast.....LOL

  18. #16
    Very Active Member Sledge's Avatar
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    I track my mileage in a spreadsheet because I'm a nerd.

    My first season on the 109 I averaged 35 MPG (6.72 L/100 Km). Breaking her in, getting comfortable riding and stock exhaust and intake.
    My second season I averaged 31 MPG (7.59 L/100 Km). I started drag racing mid summer, installed an aftermarket exhaust and opened up the stock intakes Duck-style with K&N filters.
    My current season I'm averaging 30 MPG (7.84 L/100 Km). Had my ECU flashed and more drag racing.

    I generally ride pretty hard now.

    I'm not concerned about fuel mileage, if I was, I would be riding a Vespa.

  19. #17
    Very Active Member W8INLINE's Avatar
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    I get about 200-250kms to a tank with mixed riding....50% hard 50% easy on the throttle. I ride a 2015 boss.... The blue 9's get about a km less, right Stavros?
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