I had some work done on my BMW here, they are very knowledgeable of these cars in particular and do work just as the dealer recommends. Anyways, on my way home from the shop my oil filter house cracked and sprayed out oil everywhere. They took my car back to the shop and replaced the part free of charge. No questions asked. It could have been old or it could have been tightened to tight, who knows, either way, they stood by their work and handled it very processionally. I am very happy to have them as a shop and would recommend any car owner (especially European) to go to them!