I can only remember one genuinely shitty car - the '89 Lincoln Mark VII I acquired from my parents in the last 1990s.

This car was constantly in the shop before it was mine. The transmission had to be replaced about five years after it left the dealership; it had constant problems with the air-spring suspension. By the time I got it, these had already been replaced once. I had to replace two of them again, on my nickel. By this time, the car was only worth about $4,000 - after spending close to $2k to get the air bags replaced.

I sold that mo' fo' very soon afterward!