Hi, I am a new A4 owner in Taiwan, and I have some problems need your help. I just saw your previous post "Noise issue with my new a4"; however, I think I got the same problem as you. There was a noise coming out when the speed over 40/km and it seems behind the dashboard. This sound really like a bug buzzing, not loud but very annoying. Sorry just bother you, I got this car only one week and the dealer said in this situation, they have to take off the dash board, I really couldn’t accept it...
Those sites below are what I recorded in my car, probably you have to turn the speaker up. If the noise is same as yours or not, can you reply me a message, please? Thank you very much.