problem with computer... showing high mpg

norvie16 · 01-07-2015, 12:21 PM

Hey guys my 2008 e92 (65k miles) is showing super high mpg on the computer. It's strange because everything else works, such as the ODO, range, etc. One morning it said 99.9 mpg and since then has gradually decreased but is now hovering around 40 mpg. I've asked my mechanic to reset the computer but no luck. He's just scratching his head. Anyone else have this problem?

BimmerRookie · 01-07-2015, 12:24 PM

did you try resetting it? hold down the button when you're on the mpg display screen (as you would to check your oil level).

jbjones85 · 01-07-2015, 12:46 PM

press the right pedal down more, it will go down.... All kidding aside I would try to re-set it and see what happens.

burtonsbs5114 · 01-07-2015, 02:40 PM

damn, I wish my M3 got 40mpg. What kind of fuel are you using, what mods do you have??

redpriest · 01-07-2015, 05:31 PM

Engine running lean? Really really really lean?

Flying Ace · 01-07-2015, 06:55 PM

are you sure you're not driving a 335d?

Flying Ace · 01-07-2015, 06:56 PM

this issue has been known to happen, just go into idrive and reset the mpg counter.

norvie16 · 01-16-2015, 02:37 PM

thanks guys, just went ahead and reset my computer as you suggested and back down to 13 mpg!

geez prob should have been able to figure that out on my own... anyhow thanks for the help

01-07-2015, 12:21 PM	#1
norvie16 New Member 1 Rep 5 Posts Drives: 2008 M3 Join Date: Oct 2014 Location: Los Angeles iTrader: (0)	problem with computer... showing high mpg Hey guys my 2008 e92 (65k miles) is showing super high mpg on the computer. It's strange because everything else works, such as the ODO, range, etc. One morning it said 99.9 mpg and since then has gradually decreased but is now hovering around 40 mpg. I've asked my mechanic to reset the computer but no luck. He's just scratching his head. Anyone else have this problem?
	Appreciate 0 Tweet Quote

01-07-2015, 12:24 PM	#2
BimmerRookie Major 469 Rep 1,320 Posts Drives: E93 Cavalier Z24 M3 Join Date: Jan 2014 Location: Austin, TX iTrader: (0)	did you try resetting it? hold down the button when you're on the mpg display screen (as you would to check your oil level).
	Appreciate 0 Quote

01-07-2015, 12:46 PM	#3
jbjones85 Private 6 Rep 58 Posts Drives: 2014 Jeep SRT Join Date: Jul 2014 Location: Raleigh NC iTrader: (1)	press the right pedal down more, it will go down.... All kidding aside I would try to re-set it and see what happens.
	Appreciate 0 Quote

01-07-2015, 02:40 PM	#4
burtonsbs5114 Major 368 Rep 1,198 Posts Drives: 2021 F87 M2c. LBB, 6mt Join Date: Nov 2014 Location: Fort Lauderdale, FL iTrader: (0) Garage List 2006 MV Agusta Burt ... [0.00] 2012 Trek Madone 6. ... [0.00] 2008 BMW e93 M3 [0.00]	damn, I wish my M3 got 40mpg. What kind of fuel are you using, what mods do you have?? __________________ 2021 F87 M2c. Long Beach Blue over black with blue stitching. 6mt, executive package, slick top.
	Appreciate 0 Quote

01-07-2015, 05:31 PM	#5
redpriest Colonel 2146 Rep 2,527 Posts Drives: 2011 M3/Porsche 992 GT3RS Join Date: Apr 2014 Location: Bay Area, CA iTrader: (0) Garage List 2024 Porsche 911 GT3RS [0.00] 2021 Porsche 718 Sp ... [0.00] 2021 Mazda Miata MX-5 [0.00] 2006 BMW M3 [0.00] 2011 BMW M3 [10.00]	Engine running lean? Really really really lean?
	Appreciate 0 Quote

01-07-2015, 06:55 PM	#6
Flying Ace Lieutenant General 4985 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	are you sure you're not driving a 335d?
	Appreciate 0 Quote

01-07-2015, 06:56 PM	#7
Flying Ace Lieutenant General 4985 Rep 11,891 Posts Drives: G05 45e, 997.1 & 991.1 GT3s Join Date: Jul 2014 Location: SF, CA iTrader: (5)	this issue has been known to happen, just go into idrive and reset the mpg counter.
	Appreciate 0 Quote

01-16-2015, 02:37 PM	#8
norvie16 New Member 1 Rep 5 Posts Drives: 2008 M3 Join Date: Oct 2014 Location: Los Angeles iTrader: (0)	thanks guys, just went ahead and reset my computer as you suggested and back down to 13 mpg! geez prob should have been able to figure that out on my own... anyhow thanks for the help
	Appreciate 0 Quote