As ranking highest mileage E70 here (over 111,111.1 miles) I must chime in here on my experiences. Gas mileage is not a factor of features and benefits/concerns. If you plan on buying a 6K lbs. SUV (I know - SAV,) and its a V8, please be prepared to spend some money on gas.

My issues (aside from the nav-iDrive giving me some issues with brightness control,) are:

Outer window trim replaced twice due to fading
Black door molding replaced once due to fading
Front stabilizer replaced under recall.
AC compressor and fan went at 98K I think
Nav system freezes occasionally - more of an annoyance
Tranny shifting not as smooth as one would think, but can be controlled with correct accelerator placement and foot control, or manual mode
Steering wheel volume control plastic peeling (known issue)
Glovebox upper part peeling (known issue)
The biggest concern I have noticed over the 3 years, a bit noisy inside for a BMW. This is a combination of 20" wheels and tires and I think poor sound insulation from road noise. I can stand the engine, but the road/wind noise is poor - especially when on bluetooth speaker.
Rattles - hmmm, rattles galore when cold, rear hatch, even dashboard squeaks out of nowhere, plastic on seat backs, etc.

Now, most would consider my thoughts and suggest that I get another vehicle if I'm so unhappy. I'm not unhappy. I smile the most when I'm driving KYZRSOSE. The power, the sound (helped by my exhaust mod,) and the handling make this SAV the 'funnest' vehicle to drive.

Enjoy it.
K/B

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