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      07-25-2012, 09:25 AM   #117
mapezzul
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Quote:
Originally Posted by SamS View Post
I'm all about efficiency gains, but I hope the F8x M models get more than a 20% improvement. I only get 14-15mpg with mixed driving on my E92, so 20% would be 18mpg. I'd love to see 20mpg+.
I agree and like you fully expect more efficiency than that- especially with all the new tech. They can't do any worse, that is for sure! I would also imagine that they use taller gearing instead of 6 close in the manual which by itself will help a ton as will losing the always on rear diff. If I were a betting man I'd go mid 20s on the highway...

My E90M is a hog as well but occasionally with a tail wind I see 20 on long highway stints! Sometimes I think that if it didn't sound so damn good I wouldn't drive it so hard
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