2001 Audi TT 225hp Quattro AWD 2dr Coupe (1.8L 4cyl Turbo 6M)
This car is pretty fun to drive, but I have had to bring it to the shop a minimum of 5 times EACH year that I've owned it. Aside from the irritation of continually having to schedule appts and be without my car, the European parts are expensive and an hour-long diagnostic is required before ANYTHING can be fixed. End result: even to replace a $20 brake light switch, there is a $90 charge for the diagnostic before anything is done for the car. Because Audi was trying to be so artistic with this car, it's a pain to do even the smallest thing such as putting on the spare tire and if you have a blowout once the tires are below a certain tread depth, you have to replace all 4 tires.
Interior styling, sound system.
This is by far the most unreliable car I've ever owned. How about making a car that doesn't break every other month?