Quote:
Originally Posted by Jerinoid
2013 650i xDrive. Currently at 31,850 miles (but out of warranty - past date). What I've found: (1) The batteries don't last because the car is always "on" under an electrical load (even when parked) and something is draining it - BMW knows this and replaced my battery twice under warranty. Expect to pay ~$350.00 every 2-to-3 years for a new battery. (2) Even the N63tu's still consume oil. Mine drinks a quart about every 1,250 miles. BMW calls this "normal consumption", and I have come to accept it.
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My turned out to be a defective comfort access in one of the 4 doors, which was keep draining the battery when the car is parked.