2003 Audi A6 2.7T quattro AWD 4dr Sedan (2.7L 6cyl Turbo 5A)
Best day was when I got rid of my 2003 Audi A6 after owning if for 3 months. Second day after I got it I was in the shop for an electrical issue. In three months I had 2 other electrical issues but the real kicker is that fact that after sitting idle for a few hours the car has a "warm up" period before the car will drive. Not to mention I get 12-15 MPG around town.
Car is beautiful. Exterior design is great and inside is very luxorious and well appointed.