Oh yes problems, our air con went just outside warranty (actually siezed on way to aberdeen and took out all the drive belts as well and the debri blocked the condensor etc, so not a cheap repair ~ 400 / 500 quid at specialist including labour and parts - new pump, condensor, regas etc.
Only other problem we have had is battery died just suddenly at 4 yrs, but no real drama. Otherwise we are coming up to 5 yrs and 88k miles and it goes like a solid well built golf should do!
Oh rear caliper screw in cyclinders seized which made changing the pads a bit of a drama (you need to wind the pistons in) but a couple of hours of effort and skinned knuckles sorted this problem.