If after checking and you don't find any leaks, give the BMW Customer Care center a call. I've called them a few times to ask general questions about my car when I was away from a computer, like what type of fluid to use for this, that, and this, etc., long outside of warranty. They're always pretty helpful at silly trivia like this.

Call and give them your vehicle info, mileage, all that, and tell them you're burning a quart of oil every 500-700 miles and ask if that's within factory spec. I've read that some M engines and the N54 can burn a quart every couple thousand or so, even when brand new, and that when people bring it in they're told that it's "within spec." Just a thought, not sure what engine you have, but oil burn is fairly common across all BMW engines, and it can only get worse the more miles between rebuilds.

__________________
Gone, but not forgotten:
2003 X5 3.0i - 135k - the most expensive club in the world.
Premium, Cold Climate, Rear Climate

Service History

Mods and Retrofits: Satellite radio, MediaBridge, DEPO HIDs + LED AEs, M-B W164 rear-light mod, clear corners, BSW x108 Subwoofer System, illuminated door handles, titanium grill, compass/auto-dim mirror

Traded 9/1/16 -- 5UXFA53533LV80809 -- If you know his whereabouts, please contact me.