I recently purchased a preowned black 2007 a4 2.0T. I love this damn car its great in the snow and is a pleasure to drive. After i bought the car i noticed this sound coming from the passenger side of the car. I cannot tell if it is coming from under the hood or in the door panel but this sound is driving me crazy. Seriously up an f***ing wall. I took the car to my personal mechanic who works on my other vehicles, he disassembled all of the plastic pieces in the hood, (i.e.: plastic cover on the intake, plastic tray over the engine, etc.), and without taking off the door panel i cannot determine where the noise is coming from.

PLEASE HELP I CANT TAKE THE NOISE...

 

I know how you feel. My door almost rattles off my car every time I listen to a song with even mild bass.