V8 has more power and is more fun. If money (for purchase, maintenance and repairs) was not an issue, then why not a V8??

I bought an I6 simply as a result of talking with a few local independent mechanics, letting them know that I will be buying a used X5 with no warranty on it. They all suggested I6 would be cheaper to maintain and repair in the long run.

A good majority of auto transmission problems in the last 1.5 years that I have read about here have been related to V8 models. (Just an observation.)

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Currently driving: 2011 E70 x35i , 2011 E90 335d
Previous BMWs: 2007 E90 328i , 2005 E53 3.0i, 2011 F10 535i (6spd manual)