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  BMW Forums » BMW discussion forums » General BMW
  MPG Meter - Basis for average?

 MPG Meter - Basis for average?



Hello,

I noticed that the MPG meter in the dash gives a different number than the average number that I calculate when I fill up my tank. This led me to wonder how the MPG in the dash is calculated. It's apparent that its not an instantaneous measurement or even a "last tank filled" measurement.

Does anyone know how far back (miles driven) the computer goes to calculate MPG?

Thanks
   Reply » MPG Meter - Basis for average?

Quote:
Hello,

I noticed that the MPG meter in the dash gives a different number than the average number that I calculate when I fill up my tank. This led me to wonder how the MPG in the dash is calculated. It's apparent that its not an instantaneous measurement or even a "last tank filled" measurement.

Does anyone know how far back (miles driven) the computer goes to calculate MPG?

Thanks
Goes back to the last reset.

   Reply » MPG Meter - Basis for average?

How do you reset it?

   Reply » MPG Meter - Basis for average?

Hold down the button until it resets. Usually 3 seconds. Also works for MPH average.


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