F55/F56 Trip computer not accurate
#1
#2
#3
Mine appears to show an MPG estimate of about +/- 2%, which is more accurate than most cars I've owned (which is a lot). Nevertheless, calculated [odometer vs. gallons] is the only realistic way to get solid long-term data.
The OBDII knows the actual speed, it's just that the computer displays a lower speed. E.G. OBDII and GPS will say 71 MPH but the speedometer will display 73 MPH. That's a better displayed accuracy than previous gen MINI's. If you need actual speed, use a GPS or a ScanGauge.
The OBDII knows the actual speed, it's just that the computer displays a lower speed. E.G. OBDII and GPS will say 71 MPH but the speedometer will display 73 MPH. That's a better displayed accuracy than previous gen MINI's. If you need actual speed, use a GPS or a ScanGauge.
#4
#5
Funny - several Mercedes that I've driven have pretty much exactly matched the speed shown on an auxiliary GPS. I've no experience with a BMW, but my 2015 F55 speed reads high by a solid 4mph at 70. When I asked the service manager he said they all do it. I find it annoying - oh well, 1st world problem.
#7
Another 'hate to bring it up' issue here. The MPH discrepancy between GPS and indicated speed has been a common topic in a multitude of threads. A little searching would have uncovered all this. Of course the thread participant that points this out often has fruit, vegetables and worse thrown at him for his efforts.
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#8
Mine seems to vary depending on how much highway driving I've done. I've only filled up three times. The first was spot on. The second time was off by about 3 mpg. The third fill up was very close(within 1 mpg). The first and third tanks were about two-thirds highway driving, and none on the second tank. Seems like it may be underestimating fuel use driving around town (or at least mine does).
#11
Am I the only one catching this error? My MCS is running right about 35 mpg or 1/35 gpm. The above would mean either running negative gpm (-2.65 gpm) or 3 1/35 gpm. In mpg that would be pretty low (less than .3 mpg fuel use). I hope what was meant was off by 3 mpg which is about a 10% error.
#12
Actually have a very important comment to make.
I've had my F56 MCS for a month now. I noticed my car uses UK gallons in MPG calculations and has no setting to switch to US gallons. This is very deceiving. I was blown away by my 45+ MPG highway runs...until I realized it was only mid 30s.
Anyone else notice this?
I've had my F56 MCS for a month now. I noticed my car uses UK gallons in MPG calculations and has no setting to switch to US gallons. This is very deceiving. I was blown away by my 45+ MPG highway runs...until I realized it was only mid 30s.
Anyone else notice this?
#13
Am I the only one catching this error? My MCS is running right about 35 mpg or 1/35 gpm. The above would mean either running negative gpm (-2.65 gpm) or 3 1/35 gpm. In mpg that would be pretty low (less than .3 mpg fuel use). I hope what was meant was off by 3 mpg which is about a 10% error.
#15
Actually have a very important comment to make.
I've had my F56 MCS for a month now. I noticed my car uses UK gallons in MPG calculations and has no setting to switch to US gallons. This is very deceiving. I was blown away by my 45+ MPG highway runs...until I realized it was only mid 30s.
Anyone else notice this?
I've had my F56 MCS for a month now. I noticed my car uses UK gallons in MPG calculations and has no setting to switch to US gallons. This is very deceiving. I was blown away by my 45+ MPG highway runs...until I realized it was only mid 30s.
Anyone else notice this?
#16
I've found where to switch units but the only options are km/l, l/100km and MPG. MPG, in this case, is UK gallons. It's possible the car is programmed for the wrong country (UK) but my sidemarkers light up and I don't think they would if it was programmed for UK. I just run it in L/100km now anyway.
#17
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