Tuned K04 vs standard 335d :http://www.youtube.com/watch?v=9NKgnYUVL7Q
I get an average MPG of 39 from the BMW and can manage 47mpg on a run if kept an around 70mph and a range of 650+ miles to a full tank. As a standard package its brilliant, with a good map it is capable of destroying most hothatches inc some fast saloons (fair bit quicker than a mates Subaru STi) and wen driven correctly it will outhandle most things (had a play with a new megane 250bhp sport the other day) and for a diesel it sounds brilliant, flappy paddles add to the fun factor as does the 2 stage traction control.