Quote:
Originally Posted by M Fanatic
The old car does 14/20, with a combined rating of 17mpg. The new car is 25% better which puts it on 21.25mpg. This is as per BMW press release (the 25% number). If this is true, it will be just under 22.5mpg.
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This calculation is not correct. E92 M3's epa combined mpg was 20.8 mpg for auto and 21.1 mpg for manual.
http://www.epa.gov/fueleconomy/guzzler/420b13037.pdf