It's not going to run a 4-banger (and the V8 is gone due to fuel consumption, see M5/6's move from V10 to V8 TT). Some decent intel out there that it will likely be a turbo'd 6-zylinder' maybe ~ 330 Kw (450 hp).
Also see
Quote:
Originally Posted by Autocar
"Engines for the 4-series will of course lean heavily on the new range in the 3-series saloon. These will include a new turbocharged 242bhp 2.0-litre four-cylinder petrol unit for the 428i coupe."
|
http://www.autocar.co.uk/News/NewsAr...llCars/259678/
Hence, to make the M4 special enough has to run a 6.
Quote:
Originally Posted by Autocar
New M3 gets twin-turbo six
|
http://www.autocar.co.uk/News/NewsAr...llCars/258632/