 The GTI treated me very fair. Only one time did the check engine light come on. Some temp sensor was out, no biggie.  I do recommend you get a CPO car for a longer warranty as they are a great deal from VW. Reason being that my car had a funny noise coming from the front suspension. Turned out it was the sway bar bushings (took a couple trips to figure this out).  I was just glad I had the warranty in case that ever came up, I wouldn't have to get my hands dirty.