I have a problem with my 02 GTI. I've owned it 1 month and been to the dealership 4 times. Sometimes when I reverse and turn I hear kind of a knocking sound in the front left side. It only happens sometimes. Everytime I get the car back supposedly the prob. is fixed but I still hear it. I am going to take the car in again in a few days and hopefully it gets fixed....Any ideas of what it could be ????