I agree with Horney about the fact that it's the quality of the dealers that makes a car. I can accept the odd fault but I fell out with VW in the Mk4 era because the dealer I was using at the time was useless at fixing things.
Conversely, the wife's Saab 93 convertible has had a few problems in its life but we have a fantastic dealer who (over the seven years I or her have had a Saab) has fixed problems efficiently and without fuss, has always communicated with us when they said they would, has fixed faults that I didn't even know about and has fought my corner (and won) for manufacturer contributions. Consequently, it is highly likely we will buy another 93 from them.
Ultimately, I don't expect my GTi to be faultless over the 4 or 5 years I intend to keep it but whether I buy another comes down to how good my selling dealer sorts those problems. They were excellent in the selling and delivery process - only time will tell how good their servicing and after sales care is!!!