[crunchingnumbers]

I'm just getting out of a 2012 X6 with 61k miles to avoid maintenance and gas costs. My experience is that the 2009 X6 5.0 will start to cost cash - my 2012 did with highway miles only. Some people may have different experiences but i decided on a 2014 3.5 X6 with 100k/6yr warrantee for my replacement. Great car and no doubt I will miss the extra 100hp sometimes, but at least the m package has an extra 20-30hp. For me getting a warrantee was key.

Hands down my vote would be for the 2012 with higher miles but newer vehicle for like $.

My 2c worth but that 5.0 was a beast to listen to.