Averaged over ten years, very little.
Power steering hose at <10,000.
Biggest pain: cruise control seemed to quit every 20,000 miles. At 99,000 miles the dealer replaced it with a redesigned one, even though it was still working. (while the car was still under it's extended 100,000 warranty). That cruise control just gave out at 260,000, so the new design was much better.
Head gasket replaced at 210,000, due to water pump failure.
Tie rod broke at 225,000.
Replaced gas tank (hole developed near top) at 270,000.
Very reliable car. Most of what has gone wrong with the car is pretty typical parts that wear out over 10 years and 200,000+ miles. (If you disregard the power steering hose)
My previous car was a Cougar with a 305 engine, which I loved, but with the relocation to the "snow belt" and major commute, I needed an economical car that could handle adverse weather conditions. This car filled the need well.
I have driven this car through 1 ft+ lake effect snow, ice, heat, and it handles like a dream. In bad weather, I preferred this car to my hubby's 1989 Range Rover, when he was still driving it.
Biggest complaint is the road noise, most notably the noise from the windows.
Co-worker just commented today that this car still look awesome (at 276,000 miles!) Only a few tiny surface rust spots have started appearing, but the car still gleams.
Original clutch and transmission performing great at 276,000! (5 speed manual)
Recently calculated highway mileage: >44mpg.
This gives me hope for my Plymouth Neon. it has 232,000 miles and it's a 5-speed and I'm hoping it last A LOT LONGER.