I just bought an Audi A4 2002. I is great running over 40mph on freeway. But it is kind of tickling noisy when I accelerate from idle speed. I feel the vibration and noise from padle and wheel. During the first 2-3 seconds on start, I can obviously feel the car move much slower than the normal Audi, after then, it runs good. The other thing is that when the car decelerate to about 20mph, I can feel the knocking noise. It is a kind of low pitch noise. And every morning when I cold start up the car, it has a crazy noise like diesel car. But it runs away 2 or 3 mins after.
I am juust wondering what can be the problem of those symptoms. I am going to dealer (not audi dealer, the dealer I bought this car from) next Monday. I hope I can know something before I go there.