Not a GTI but I have a one month old GTD DSG.
1. I get a knock coming from the rear of the car every time a go around a corner - there is nothing loose in the car.
2. A LOT of vibration throughout the cabin, suspension a bit more than firm!
3. Road noise loud but a strange loud noise coming from front left side of car - sounds like wind noise but isn't ? Heaven alone knows

4. Usual steering rack noise. Had it in my Mark V - and was never really fixed.
With extras I paid just shy of 30K for this car - and am not very impressed
