Originally Posted by BrokenVert
Why do you think that the 1M - despite being produced until Jan 1 2012 was labeled as a 2011 model?
It was to delay the onslaught of the federal regulations.
And to my knowledge it is. I just double checked BMW's website and they label it as a "TwinPower Turbo" and thats what they label the N55 as in media.
For being the #1 1M troll, you should know more about BMW and the 1M. There is no 2012 US 1M because BMWNA didn't want to homologate a 2012 MY for such a low production number that was offered to them by BMW and not due to any emissions regulations. http://www.1addicts.com/forums/showt...ght=2012+naias
I'm pretty sure CAFE standards are based on emissions by vehicle type and not by engine.
The 2012 Z4is indeed has the N54. BMW uses "Twin Power Turbo" designation for both twin turbo and twin scoll. Also, the N54 has only Double VANOS and the N55 has both Double VANOS and Valvetronic. Go triple check the BMW website and RealOEM website.