Was hoping someone could help diagnose some noise's on my 2001 A3 Tdi 130. 1. Between 15 and 30 mph, their is a low pitch howling/whirring noise which fades when accelerating, but returns when cruising at 50 to 60 mph. The noise also winds down to the slowing speed of the car when coming to a stop. 2. Occasionly when pulling away at junctions with the wheel turned, i hear a vbration/shudder. 3. When cueing in traffic on a hill, and i roll out of gear, i hear a light grinding sound at low speed, but again stops when i speed up. I have had the front bearings replaced 4 month's ago, and asked a local mechanic to try and diagnose the howling/whirring sound, but he thought nothing sounded out of the ordinary when he drove the car.... Its been puzzling me for a while now and would like to try and diagnose them. Looking through the forum i see slightly similar problems, but not my exact symptoms, any suggestions appreciated!