Quote:
Originally Posted by stressdoc
If you get 17.5 mpg with the E90 M3 I would guesstimate an improvement to 23 mpg in the F82.
Not sure what conditions you were driving the 320 in -- clearly not highway.
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I got 19 mpg (U.S.) with my E92 M3 DCT, I'm getting 22 mpg in my 435i xDrive 8 AT - identical mixes and speed. It's hard for me to imagine an M4 doing better.