335i M sport coupe '57 manual, 25mpg, that's over 10,000 miles and brim to brim calculation. Mostly commute to work which is 50/50 town/A roads. Pretty good for a car that can carry 4 and do 0-60 in a little over 5 seconds!
The 335i engine is amazingly frugal on the motorway where I can easly get 33-35mpg at a decent crusing speed.
I'm having it mapped next week so I'll see what that does to the mpg.
By comparison, I had a DMS mapped 535d touring which never managed more than 28mpg! And a 400bhp mapped Evo IX which hovered around the 18-20mpg mark.