2004 Audi A6 3.0 Avant quattro AWD 4dr Wagon (3.0L 6cyl 5A)
Vehicle started leaking oil and running rough at less than 12k. Dealer would not repair. Finaly after many complaints, dealer found coolant was leaking into the head gaskets. Short story is dealer has had the head gaskets out 3 separate times to 'resurface', car still leaking oil, repaired that several times. I was told the car is like a piece of cheese, when one hole is fixed, another opens up! That must be professional mechanic speak. Car has been in 29 times for serious repair in less than 2 years.