Average fuel comsumption incorrect

bfung · 11-20-2008, 04:39 PM

just noticed this problem lately...b4 it used to be 14.3 L/100km, now it's always 1.0 L/100km or 99.9 MPG...the instantaneous one is working fine and varies all the the time while i'm driving...anyone experiencing the same problem?

also i've brushed the gears several times when i shifted from 1st to 2nd rite after a cold start..i'm sure i've floored the clutch...maybe when the car is cold u just have to be super gentle and slow to shift?

bsamoul · 11-20-2008, 04:43 PM

Yeah, people have experienced the erroneous mpg. There have been a lot of threads about it. I'd probably disconnect and reconnect the battery to reset the computer.

murellus · 11-21-2008, 02:01 AM

Just reset it (by holding that button on the stalk to flip through mileage/mpg/speed while on the avg mpg screen).

Mine happened after not resetting it after 20k+ mi

E90330iS · 11-21-2008, 02:35 AM

the average MPG was never correct anyway. measure it yourself with calculations of miles/gallons

bfung · 11-21-2008, 04:29 PM

Quote:

Originally Posted by murellus

Just reset it (by holding that button on the stalk to flip through mileage/mpg/speed while on the avg mpg screen).

Mine happened after not resetting it after 20k+ mi

didn't know i can reset it that easily...i'll try it when i get off work...thanks!

CyberGypsy · 11-21-2008, 04:38 PM

about 1 mile per gallon off

Sifu-Lux · 11-23-2008, 11:25 AM

Once you manually calculate the correct fuel consumption, you can go into the hidden OBC features and change the correction factor until it displays correctly. I did this on my old E36 328i.

darkphantom · 11-23-2008, 01:34 PM

Quote:

Originally Posted by Sifu-Lux

Once you manually calculate the correct fuel consumption, you can go into the hidden OBC features and change the correction factor until it displays correctly. I did this on my old E36 328i.

Aha! good idea. I'll have to do that...

danimal · 11-25-2008, 01:49 AM

But gas pumps are notoriously inaccurate as well, so measuring your MPG by gas pumps and the miles on your odo may not be any improvement over the computer. The computer might actually be closer to reality.

-Dan

11-20-2008, 04:39 PM	#1
bfung First Lieutenant 29 Rep 355 Posts Drives: 07' e93 335i Join Date: Mar 2007 Location: Vancouver, BC iTrader: (0)	Average fuel comsumption incorrect just noticed this problem lately...b4 it used to be 14.3 L/100km, now it's always 1.0 L/100km or 99.9 MPG...the instantaneous one is working fine and varies all the the time while i'm driving...anyone experiencing the same problem? also i've brushed the gears several times when i shifted from 1st to 2nd rite after a cold start..i'm sure i've floored the clutch...maybe when the car is cold u just have to be super gentle and slow to shift? __________________ 07 E93 335 6MT / Alpine White / Coral Red / Poplar Grey / Sports with 19" style 230 / NAV / AS / CA / Bluetooth & TeleAssist / Last edited by bfung; 11-21-2008 at 01:09 AM..
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11-20-2008, 04:43 PM	#2
bsamoul Major General 165 Rep 7,433 Posts Drives: E90 325i Join Date: Feb 2007 Location: Walnut Creek, California iTrader: (2)	Yeah, people have experienced the erroneous mpg. There have been a lot of threads about it. I'd probably disconnect and reconnect the battery to reset the computer. __________________ -Brian 2X 2006 BMW 325i [Electric Red & Mystic Blue] \| ZPP \| V1 \| Rear Fogs \| M3 Lip Spoiler \| EAS RemoteKey \| BMS Powerbox \| Projector90 Headlights w/ LED AE \| LED plate lights \| OEM Blacklines http://www.tech-shine.com
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11-21-2008, 02:01 AM	#3
murellus Lieutenant 12 Rep 523 Posts Drives: 22 x3m40i Join Date: Mar 2007 Location: nj/nyc iTrader: (0)	Just reset it (by holding that button on the stalk to flip through mileage/mpg/speed while on the avg mpg screen). Mine happened after not resetting it after 20k+ mi
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11-21-2008, 02:35 AM	#4
E90330iS Major General 143 Rep 6,333 Posts Drives: BMW M4 Join Date: Jan 2006 Location: Arcadia, California iTrader: (56) Garage List 2006 330i [0.00]	the average MPG was never correct anyway. measure it yourself with calculations of miles/gallons __________________ 2017 BMW M4 DCT Lease Transfer: https://f80.bimmerpost.com/forums/sh...8#post23736398
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11-21-2008, 04:38 PM	#6
CyberGypsy Lieutenant 15 Rep 443 Posts Drives: 2006 325i Join Date: Oct 2008 Location: Key West iTrader: (0)	about 1 mile per gallon off
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11-23-2008, 11:25 AM	#7
Sifu-Lux New Member 2 Rep 26 Posts Drives: 2008 E90 335i Join Date: Nov 2007 Location: RSA iTrader: (0)	Once you manually calculate the correct fuel consumption, you can go into the hidden OBC features and change the correction factor until it displays correctly. I did this on my old E36 328i. __________________ '08 BMW 335i Sedan Alpine White III Steptronic with paddles M-Sport package, Zenons, OEM Blacklines
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11-25-2008, 01:49 AM	#9
danimal Captain 50 Rep 755 Posts Drives: '14 228i Join Date: Jan 2007 Location: San Diego, CA iTrader: (0) Garage List 2014 BMW 228i [10.00] 2007 BMW 328i Sedan [0.00]	But gas pumps are notoriously inaccurate as well, so measuring your MPG by gas pumps and the miles on your odo may not be any improvement over the computer. The computer might actually be closer to reality. -Dan __________________ 2014 228i alpine white \| sport line \| 6-speed manual \| lighting package \| driver assistance package interior - black Sensatec \| aluminum & red trim
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