Thread: O MY GOD !
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      06-03-2011, 10:24 AM   #16
j128i
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Drives: 08 128i Coupe AW/Black
Join Date: Oct 2008
Location: NH

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Better modify the way to calculate the consumption

I suggest:
1a. RESET the trip meter (or note total kms driven) right before fill up
1b. fill up (no need to record this number)
2a. NOTE total kms driven since last fill up, say KM1, right before fill up again
2b. fill up and RECORD fuel quantity, say L1
3. calculate consumption as C1 = 100x(L1/KM1) litres per 100 km
repeat above a few times to get an average consumption

Quote:
Originally Posted by manicm View Post
1. Cyee, firstly let's ignore the computer. When next you fill you up, reset your trip meter and note how many litres you've filled, then before you run empty take note of the kms driven, and then calculate the consumption.

2. Now not that I don't believe you, but it's very difficult to see how you could be keeping the revs <= 2000rpm, especially since the autobox habitually revs well over that amount before changing up.

3. Again, solely driving in town will take its toll on economy big time.

4. Have you tried the Manual mode yet?

5. Do visit your dealer if you think something is wrong.
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