Just about everything possible - it's an instructor car. Biggest problem was a recurring one with the fuel supply - cost almost £1000 in repetitive exploratory work to find the fault, which turned out to be a crack in the fuel pump.
Handling is good for a Ford, power steering is helpful. The engine is a load of pants - some of my pupils call it the gutless wonder, no acceleration at all. The fact that it is diesel does not help. Comfortable inside but as I said, it in desperate need of a turbocharger.
By a 1.6 petrol fiesta you won't be disappointed and they ain't sluggish old diesels suck unless you have a turbo so you might as well take him to the scrapyard.
I have a Fiesta 1.8D.
I've had it since I started driving about two years ago and it has never let me down. OK, apart from once when I replaced the clutch and the clutch cable subsequently snapped and left me in the middle of a junction just revving!!
When I bought the car it had 76k and now has 83k, so I haven't covered a lot of distance, but in the 7k it has done, it has never complained.
Granted, if you want to overtake you have to check the wind is behind you and your going down a very steep hill to even attempt it!!!
The main advantage of having the diesel variant though (other than the economy) is that if you have four people in it, it pulls just as well as if there were only two!!
An a little hint for the minor problems that occur, treat it bad!!!My courtesy light stopped working so I gave the switch in the door hinge a good beating and it now works. Also my emissions were too high to pass an MOT so I put the pedal to the metal, revved the nuts off it and hey presto, a cleaner car!!!
Don't knock the mighty fiesta, it'll put up with a lot more than you would expect!!