Did you know there are some states that do not report to carfax? Carfax is a good guide but isn't always completely correct. You should always have a vehicle looked over by a qualified mechanic before you buy.
I've seen several instances where carfax said there was no reported damage and the car actually be two cars tack welded together, they didn't even have air bags. As the saying goes. Buyer Beware.
I'll post some things you can look for and pics in the future to help you avoid buying a gti with problems. Of course for legal reasons, we always suggest that you have a mechanic and/or body shop check the vehicle before you buy.