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Leto	May 3, 2006 07:54 PM

Mileage display vs. actual pump

For the past 4 fillups in a row, my avg mileage display in the console says 19.5mpg, but consistently dividing odometer readings by gallons on the pump, my manual calculation gets to 18.5mpg.

How come? You'd think the ECM just counts the miles and the amount of fuel that passes through the fuel injectors...

abacab

May 3, 2006 07:56 PM

RE: Mileage display vs. actual pump

I would trust the manual calculation over the onboard computer...

BadLuckAudi

May 3, 2006 09:32 PM

RE: Mileage display vs. actual pump

yea id go with the math its stupid but always right

david9999

May 3, 2006 11:45 PM

RE: Mileage display vs. actual pump

The manual is correct. With a VAGcom you can make a correction in the computer plus or minus 10% IIRC.

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