I would have to say everything has gone wrong with the car.
2 weeks after I bought it, the engine had to be re-built. Clutch had to be replaced, timing belt was replaced, spark plugs were also replaced. The car can't seem to keep a steady RPM when in neutral, shifts from 600 up to 1500.
It destroys tires, but that's probably due to my driving, brakes tend to overheat on a daily basis, had many electrical problems, including the distributor which cost over 400$ for a used one, and another 300$ to install.
Oxygen sensor is dead, very hard to replace, have to go under the car. All fluids have to be topped up on a regular basis, coolant, oil, power-steering fluid and brake fluid. There is a leak in the transmission.
The car makes noise when windows are down. Parts falling off everywhere. The car is very fragile, it's easy to scratch it with a nail, you could easily destroy this car with your bare hands.
Just recently a seal on number 1 cylinder broke, now the car can't go over 150kmh, takes about 30 seconds to go from 0-100kmh. Because of certain laws in Canada, it would cost me more to sell the car than it is worth, I'm probably just gonna sell it for parts.