Last edited: 17 Jan 2019 I had an issue with bmw estate about 3 years ago. Car losing power whilst driving and engine drive train failure light coming on. BMW garage claimed it was not covered under warranty claimed to have fixed it and charged a handsome €1100. Problem wasn't fixed. They tried something else, charged another €700. Still not fixed, so went to an independent specialist who meticulously checked everything and eventually found it was a crack in the exhaust gas cooler and his very reasonable fee was €800 edit - BMW have agreed to refund all costs outlayed. Surprised that this was offered immediately and without quibble.