The answer is 61 - BMW F800 Riders Forum & Registry



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  1. #1
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    Hi All,

    Does anyone have a F800 that does anything other than 61 Mile per Gallon? I have this sneaky suspicion that BMW have sold me a bike with a supposed fuel consumption indicator, which in nothing more than a display that indicates a six followed by a one ......constantly and irrespective of speed, load, terrain, rain, wind etc etc

    Any thoughts??

    Regards Tedfred

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  3. #2
    notacop is online The original Schwartz Wald Troll
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    Perhaps you are unintentionally a very steady rider that is blessed with a slow hand.
    Before the days of electronic fuel sensing my R65LS got 46 mpg, sun or rain, richer or poorer, hot or cold. I rely on the fact that at 230 miles I would have to open the petcock to reserve.
    That was odometer fuel tracking. What mileage does your bike actually get when you refill the tank?
    On my ST I enjoyed the lies the gauge told me. Like the 191 mpg when coasting down a hill.

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  5. #3
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    Hi,
    To be a little more serious, I have only ever used the average fuel reading and have not had the bike long enough to explore all the displays. In fact I have only ever refueled the bike once but was a little concerned as the reserve light illuminated at only 125 miles which seem low for a bike I was told would do 200 miles between fuel stops? Perhaps the bike has a 75 mile reserve fuel capacity??
    There again if I assume 61 mpg is correct then with a 3 gallon tank its range is down at 183 miles ???

    Regards Tedfred

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  7. #4
    Terryj's Avatar
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    Quote Originally Posted by tedfred View Post
    Hi,
    To be a little more serious, I have only ever used the average fuel reading and have not had the bike long enough to explore all the displays. In fact I have only ever refueled the bike once but was a little concerned as the reserve light illuminated at only 125 miles which seem low for a bike I was told would do 200 miles between fuel stops? Perhaps the bike has a 75 mile reserve fuel capacity??
    There again if I assume 61 mpg is correct then with a 3 gallon tank its range is down at 183 miles ???

    Regards Tedfred
    My average MPG regularly shows 60 plus. Why not brim the tank, zero the trip or note the main mileage, do 100 miles re brim it again and devide the mileage by the litres used and the convert to gallons? This would confirm the true MPG.
    Had mine 30 months l don't think it's ever gone under 60 odd average MPG. Hope this helps.

  8. #5
    Runmyownlife's Avatar
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    I play a bit with the various fuel and mileage functions; resetting and manual comparisons. On any road trip I'll reliably get 4l/100km or just under 60 mpg (US gallons). That's with luggage and highway speeds. When riding at distance in level, low altitude conditions, I'd see about 3.6l/100km (65 mph US.)

    While I make it a practice to fill up around 300 km (185 US miles) or when my bladder is crying out, whatever comes first, I have gone to 350 km (rural Idaho doesn't seem to like gas stations) and still a litre or so in the tank.

    The warning definitely comes early...maybe about 75 km, give or take. (I don't pay too much attention to that particular indicator, or the fill level. Prefer the accuracy of mileage.)

    For those people who track mileage to the second decimal place, something to consider as well is the impact of ethanol blends. Ethanol has less potential energy than the gasoline it replaces.

    Ethanol contains about 30 percent less energy per unit volume than gasoline. As a result, a 10 percent ethanol-gasoline blend will have 97 percent as much energy as gasoline.
    Last edited by Runmyownlife; 4 Weeks Ago at 09:37 AM.
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  9. #6
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    I generally get around 61 - 62 and fill up around the 140 to 250 Mike mark. I've had the reserve light come on a couple of times when I've travelled about 150 ish miles which would give a range of about 190 miles, maybe a little more

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  10. #7
    ccramerusc's Avatar
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    We you must use those crazy British gallons because I typically get 52 miles per American gallon. But it's ranged from 42 to 71. It's usually below 45 at 80+ mph. I set my 71 record this summer putting around Newfoundland at 45-50 mph in top gear for a whole tank. I try to run the highest octane available. In the US, that's typically 93 (about 97 RON in the EU).

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  11. #8
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    Quote Originally Posted by ccramerusc View Post
    We you must use those crazy British gallons because...
    And people think the location is irrelevant... You can update your profile with your location if you wish to help the rest of us out in trying to figure out your conundrums.

    Since the bike is fairly new to you, my assumption is that is the average mpg of the previous rider's miles and he never reset it. Try resetting both your average speed (first button press) and your average MPG (second button press) and see what you get.

    Otherwise, the only other fix I can think of, is to twist the right wrist more and more frequently.

    Chris
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    I always run mine on 98 ron over here, and I think I have fuelled up at the same bowser since I bought the bike in Dec 2018. Used as a commuter, I do a 68k round trip each day, and the average since I have been filling it is 79.14 mpg imp, or 3.57l/100km. That's if I drop off the first fill up, as the dealer would have done that and obviously didn't fill it like I do, and it only showed 63mpg. Bike was sold to me as a demo, but only had 40km on it. Worst I have got is 75.14mpg, and the best 85.19, just two fills ago. In fact fuel consumption seems to have improved lately with 6 of the last 8 fills 80 or above.

    I don't ride for fuel consumption, but I also don't wind it out. It's a 800 with light weight and 90hp. It blows the traffic away with ease, unless someone is really keen, and then I let them go, like the tosser in the Audi the other day, who booted it around a corner from the lights. I'm not going to give it a big handful from lights around a corner over the crown in the road, especially when he had the inside lane. I cruised past him at the next set of lights a few hundred metres up the road, and split through the traffic to the front of the que. Never saw him again.

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  14. #10
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    I've had 74 mpg best out of mine, that's tank to tank top up and record mileage between fill ups rather than using the gauge I'm not sure what distance/time that the bikes average calculation uses and I tend not to have it set on the display but I've seen over 70 on it. I tend to get the low light on from about 190 onwards and had 221 on a full tank. According to one member he did 41 miles from low fuel light on to bike stopping (I'm not planning on adding to the data on this one), I've never gone beyond 20 something before being able to fill up. Those numbers came whilst commuting long distances primarily on motorways and faster A roads with large sections of the motorway restricted to 50 MPH so may explain the pretty good figures.
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  15. #11
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    I ignore the readout and occasionally check mileage when I top off the tank, the old fashioned way with math. Like Cramer, I average 52 year round.
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  16. #12
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    I get between 55 and 65 mpg, US gallons running 10% ethanol 87 octane fuel, under most conditions while riding my 2009 F650GS at sea level. The few times I had managed to find E0 in the past, my mileage increased to 70 mpg at highway speeds while riding at 4,000 feet above sea level.

    Right now my F650GS has 45K on the clock.
    Last edited by Richard230; 4 Weeks Ago at 05:47 PM.
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  17. #13
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    Average mpg as shown on display on the two F8GT's I've owned in the UK :-

    1. 64 plate 18,000 miled in 24 months of ownership was 63mpg.
    2. 18 plate 4,000 miles in 5 months of ownership is 68mpg.

    Riding style and state of service of the vehicle are the main variables to determine mpg.

    @TedFred
    How many miles have you riden on the bike?



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  18. #14
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    Tedfred (love that name; my best friend back in high school was named Bob Fred, so it rolls easily from my tongue): My ST is almost 8 years old and it has 30k+ on the odometer. Every single mile I was the pilot. I have been meticulous about keeping track of mileage. Lots of variation in mileage of individual tanks, depending on all the factors already noted above. But my overall fuel mileage for all those miles over all that terrain in all that weather and at all those speeds, is 55+ mpg (US gallons). Which I think is pretty terrific. I've only gone further than 200 miles on a tank a few times because I am one of those pilots that starts worrying as soon as ANY light comes on the dash. Thereafter, my ride is ruined, because my mind is thinking/fretting about the next fill-up.
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  19. #15
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    I'd say I do about that much, but my indicator works correctly if that's what you're looking at. I'm pretty sure you can reset the average, might need gs911, I can't remember

  20. #16
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    Just hold the button down. It'll take about 3-4 seconds, and then it zeros out. No need for a GS-911.

    Do the same thing for the Average Speed.

    Chris
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  21. #17
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    Just accept the bike is great on fuel. Doesn't matter if you are in Britain or the states. See my post on accurate checking if you are concerned Tedfred
    Ride safe.

  22. #18
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    I always get confused with the mpgs when not stated US or Imperial, coming from a country that uses km/l.

    I'm getting 23-25 km/l on most days, 21-23 on bad days. Looking at most of your figures, is mine considered bad? It's humid summer all year round in my country, and I only pump RON95.

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  24. #19
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    Quote Originally Posted by silvermoon1407 View Post
    I always get confused with the mpgs when not stated US or Imperial, coming from a country that uses km/l.

    I'm getting 23-25 km/l on most days, 21-23 on bad days. Looking at most of your figures, is mine considered bad? It's humid summer all year round in my country, and I only pump RON95.
    25 km per litre =
    4l/100km=
    60 miles per US gallon

    20 km per litre =
    5l/100km=
    47 miles per US gallon

    I would say that's a perfectly acceptable range. You don't describe the type of riding but I'm assuming the figures you provide include at least some city riding and the lower numbers reflects the most city riding. (Or more accurately, city stop, idle and go driving.)
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  26. #20
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    I wish I was getting that much. Here's mine:

    Miles 2,517
    Cost $174.51
    Gallons (US) 55.175
    Miles Per Gallon 45.60
    Price Per Gallon $3.16
    Cost Per Fillup $9.18
    Miles Per Fillup 133
    Gallons Per Fillup 2.904
    Litres 208.838
    Kilometers 4,051
    Kilometers Per Litre 19.400

  27. #21
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    Quote Originally Posted by drneo View Post
    I wish I was getting that much. Here's mine:

    Miles 2,517
    Cost $174.51
    Gallons (US) 55.175
    Miles Per Gallon 45.60
    Price Per Gallon $3.16
    Cost Per Fillup $9.18
    Miles Per Fillup 133
    Gallons Per Fillup 2.904
    Litres 208.838
    Kilometers 4,051
    Kilometers Per Litre 19.400
    I have similar gas consumption as drneo.

    When I first bought my F800ST I remember getting 225 miles before fill up. (I don't remeber mpg)

    Now I am down to 160 miles/tank (or less) and getting somewhere in the low 40's mpg.

    Lately the bike misfires at high speeds (75mph) and then gets back to normal. Sometimes the misfiring occurs for no reason and then goes away.

    Has anyone else seen this? Any suggestions as to the cause?

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