The main stuff that seems to fail is just the usual stuff that comes with age like bushes etc, but these a pretty much the same as the MK2 to change, apart from that not alot.
The engine is a bit harder to work on, but thats mainly cause there is less room comapred to a mk 2, but then mk2's do have loads of room, as long as you have vag com you should be able to look after it as easily as a mk2 as that is the only thing that really makes thing difficult.
