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Originally Posted by Ffs630
Why cant they just fit an NA 6 like the e46? Not a fan of the n55  although it is a great engine i was hoping for a return to the basics with the m2 (in terms of the engine) imagine a s54 reboot?! |
You are very late to the party on this. Look around and see what other manufacturers are doing. They are all going to turbo motors for the same reason.
Buick. FORD ( note that even their trucks are using turbo Sixes now!), Ferrarri California and 458 are going twin turbo... , the next Porsche boxster will be a turbo.... Etc.
See: corporate average fuel economy. Aka. CAFE in US.
http://www.nhtsa.gov/Laws+&+Regulati...16:+Final+Rule
http://en.wikipedia.org/wiki/Corpora...e_Fuel_Economy
Also see emissions requirements for Europe.
Turbo motors are more fuel efficient and can produce more power with less emissions than an NA Motor. Reduced emissions and better fuel economy is the ENTIRE reason that BMW began producing an N55 vs the N54..