2007 328xi - 72,xxx. I have had this problem for a while. Dealer has done everything from change spark plugs, spark plug wires, cam shaft sensor, etc. Last week the dealer replaced 12 roller drag lever (11-33-7-631-589) and either replaced or performed 12 alignment element (11-33-7-605-330). This was covered under extended warranty. Two days later and 500 highway miles the car sounds the same when started.
I am seriously contemplating pursuing legal action against BMW. Are there others out there on the forum who have tried this avenue? Are there others who would be interested in seeking legal remedies? A class action suit would be a serious wake-up call for our friends at BMW.