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      07-03-2012, 10:04 AM   #74
Cortexiphan
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Drives: BMW M4 15'
Join Date: Jun 2012
Location: Boston, MA

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Quote:
Originally Posted by SamS View Post
Who said it was an F82? Sound money says it's an F80 under there.

SCOTT26 says 20-25% better fuel efficiency. Sounds good on paper, but still not great. If I get 14mpg right now in my E92 M3, that kind of improvement will only yield me 17-18mpg. I would think an F80 M3 with a revised N55 could get to within 1-2mpg of what the F30 335i can get for fuel economy.
I get 19 mpg on the M3. ( 70% highway )