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      05-18-2011, 03:16 PM   #22
han405
Second Lieutenant
 
Drives: E46 M3, E92 M3
Join Date: Sep 2009
Location: PA

Posts: 205
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Quote:
Originally Posted by Wall$treet View Post
What are you talking about? n54/55 gets 30mpg on the highway and 20 around the city without even being a granny. S65 is 12 around city and 20 at the most on the highway. 10mpg is HUGE.

A corvette has more HP, more displacement and gets around 28mpg.

I am nto saying the engine is not great but it sure is not for its efficiency
you get 30 hwy and 20 city with an N54?? are you pulling my leg?
two and half years ago I got a loaner 335i (n54) with 4000 miles for a week when my e46 M3 was in for service. i was only able to get about 22 mpg combined..(daily driving, with the same route and behavior when compared to driving my m3s)
considering it's a FI engine, it's not that different from my S54 engine (avg. 19 combined). My S65 engine averages about 17 mpg combined.
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