Nothing I think.. certainly nothing as big as a timing belt. I don't think it ever gets any bigger than changing the spark plugs, apart from the usual stuff. Oh and don't worry too much mate, I've got an 02 Turbo with 90k, and it's still pretty nice and tight. Much nicer to drive than our boggo XT BFII wagon at work! Just be a little careful - they are so much fun to drive you'll buy the first one you test drive! Well that's what I did, but I think, thus far, I got pretty lucky. Don't be afraid to shop around, there should be more than a few under 20k these days.