Sounds like it's a beast but I would not want to be the poor soul who ends up buying this particular X5M. Running out of gas and running up to the rev limiter in a pre-break-in vehicle can't be good.

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2012 F10 550xi Carbon black/oyster
2011 E92 M3 SSII/black
2012 W166 ML63 Steel grey/porcelain
2007 E93 monaco blue/beige (retired)
2010 E70 35d Space grey/saddle brown (retired)