I am a new member, so I hope I'm addressing the forum correctly . My 335i was less than 5 mo old when I had a failure of a 'high pressure pump' early December (I still have received no real explanation of what that is ... yes I need to purchase a manual!). The engine almost choked to death before I got it to Fairfax BMW service that day. It was replaced but in January I discovered oily residue in my garage. The motor oil level maintained the max until this week, where it quickly went to 75% of max. The car has less than 4000 mi on it and is not really driven hard. I took it in to Fairfax BMW today but I'm really suspicious of the previous service being sloppy in that earlier replacement.
Two points: Are high pressure pump failures common in new dual turbo engines, and should I be suspicious that the earlier job messed up a seal somewhere? I had a 2000 328i previously and the engine was almost totally carefree (occasional thermostat probs only).