The first thing that went wrong with my Grand Am was my motor. It had to be rebuilt right after I bought it! The head gasket also was replaced.
Then annoying clicking noise that came from inside the dash board.
Shortly after that, my alignment was off and I had to get brand new axles because they were bent.
Then my power steering pipe fell out. I continually was putting it back into place. The last time the clamp came loose, I bought a new clamp and it's been great since then.
After this, my window motor broke and my windows would fall down in the middle of winter. The trim also was very off, and left air getting into the car, making a squeaking noise. To replace the window motors was about 300 dollars.
I went through a car wash that I normally didn't go to, and then my driver's side mirror fell off and it cracked. I bought a new one from a used junk yard, and it cost 50 dollars.
My rear bumper was cracked and rust started appearing, but that isn't any mechanical problems.
After that, my rotors and struts went back and had to replace that. Then my heater blower motor went out, and that was an expensive fix.
Soon my alternator went out, and my power seats never worked from the moment I bought it.
I had to buy a few new parts to roll down my window because it just went bad.
Then my car wouldn't stop overheating. Turns out the coolant tank was cracked, and it always got air pockets in it.
Then my brake line went out, which was an extremely expensive fix. And now my car is getting really low gas mileage. I bought a brand new fuel filter and some other things to clean out the valves. I bought new tie rods because they went bad as well.