I have a 2004 Audi A6 2.7T. I brought it into German Car specialists after finding an engine coolant leak. After thorough inspection under the car I found where the leak was dripping from and marked the area (hoping to save the shop time in finding the problem and myself money).I dropped it off at night, and the next day I received a call that they see the problem and that it is likely my secondary water pump. They quoted a reasonable price and I had them do the service.The problem was fixed and I have had no subsequent problems. I think their knowledge of the cars is apparent in being able to diagnose the problem so quickly (without removing parts). I think they really understand (my Audi model) which is nice (the 2.7T are a bit more complex than the other models).I only gave them 4 stars because they made one recommendation that I AGREED to, but in hindsight, I think I was fine (I had the temperature gauge replaced because they said their technician saw the gauge act erratically... I dont recall having any problems with it but agreed to it (cheap replacement $45)). They were not pushy about any service (including the temp gauge), and Mac was a very nice mechanic.I would definitely recommend them to anyone with an Audi; they will do a great job for a decent price.