[mirob]

BMWs are oil burners, this isn't news. 335dsleeper's experience is an outlier, not the norm.

Also, just because you don't get an iDrive "low oil" warning doesn't mean you have the optimum amount of oil in your motor. The system warns you when you need to add a quart (although, often times I found I needed more than a quart). Think of it as your brain - if you feel thirst, you're already dehydrated. So be proactive and check the oil level regularly. Even if the digital system isn't as reliable or accurate as an old fashioned dipstick.