Quote:
Originally Posted by han405
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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I have an new 335is (2000 miles on it). One the highway I consistently about 27 mpg driving around 75 mph. In the city I consistently get 18 mpg. That's very similar to what you got with the loaner, assuming a 50/50 mileage profile. However, you have to admit it's substantially better than what your M3 gets.
I suspect that my car will do better as the engine loosens up further. I got almost 28 mpg on the Autobahn (did ED) but that was on 100 octane fuel with no methanol blended in.