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      02-17-2013, 06:49 PM   #99
SamS
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Drives: Tesla M3 Perf + '18 X3 M40i
Join Date: Jul 2010
Location: Dallas, TX

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Quote:
Originally Posted by Jamesons Viggen View Post
335 gets 30+ on the highway and the M3 should not be heavier. I did not say it would average 30...I do mostly highway driving. 30 highway and a 400 mile range would be perfect. I think the E90 M3 struggles to crack 20mpg and 300 miles a tank. You had one, you tell me lol.
Yes, the E9x really struggles to get to 20mpg. I took it all the way back from PCD to Dallas (~1000 miles), so I had plenty of opportunities to try to max out highway mpg.

The F80 may not be heavier (although, it might) than a 335i, it will have a diff, and maybe bigger/heavier brakes and wheels to eat away at mpg compared to a 335i. And it will probably have the 7-speed DCT, where the 335i often has the 8HP which helps out its highway mpg.

I realize this is all speculation, but I just don't see an F80 even matching a 335i for mpg. Just compare a 550i F10 to a M5. No doubt the F80 mpg will be better than the E9x M3, but it will still be a hard argument to make that it will be an economical daily driver. Heck, it just cost me $50 to fill up my AH3 yesterday, and I wasn't too happy about that
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