Quote:
Originally Posted by TK421BMW
If leasing, and don't need the speed, get the 4cyl engine. If going to own for a long time, get the i6. I'm worried about the long term life of these over-rev'd 4's. BMW has been putting out great i6's for decades. The 4's are relatively new. Don't forget the i6 includes some things that are optional on the. 4.
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Actually BMW have been making I4 engines for 60 years and the specific outputs for the 30i and M40i (US version) are almost identical and so are their redlines. The I4 isn't any more "over-rev'd" than the I6