I've known since I got my 2016 535d a few weeks back that you can check the oil via the iDrive system. A quick google search showed that BMW did away with oil dipsticks quite a while back, and my wife's X3 is an example of a dipstick-less BMW. So naturally I assumed my 535d didn't have a dipstick. I was looking up something unrelated today and discovered by chance that BMW DID include a dipstick on the N57 diesel engine that my car has! Mine is an exception to the rule. See red circle in pic. Sure, it's a silly thing to get excited over, but as another BITOGer said in another thread, I like "checking the oil with the dipstick the way God intended"