GOOD NEWS!!! Now the F31 330d has been announced, Southlight says the 30d will remain as an N57!
Phewww!! I can get 52mpg at speed limits (70mph ish) with a steady foot in my older, less refined, less clean 245ps 520NM 30d so don't give me any "4 pot will be good for more MPG bullshit"
It is the 258ps 560NM unit that will be implemented and it will probably conform with EU6 regulations which targets NoX emissions, if not, it will likely be an optional extra like the F10/F11.