Hi Ian
I have had my 335d from new a year now and the worst average mpg I have seen is 32mpg from driving around town stopping and starting all the time. Whereas I have cruised back home 120 miles at 70mph and achieved 47 mpg. Currently I average 37 mpg but I do give it the beans a lot of the time. If you granny along at 50-70 mph (depending on where you are) everywhere using cruise control you could easily see 42 mpg. But when you have a 335d you won't!
