2001 Audi A6 2.7T Quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)
By far the most unreliable car I've had. Bought the car use as "Certified Pre-Owned" with 32000 miles on it. The car was wonderful the first 3 months, the the problems started. In the next 6 months, it spent more time at the dealership than in my garage. Most problems were of electrical nature. Bottom line ..... save yourself a lot of trouble by avoiding this car and this manufacturer all together.