Noticed today that when taking my foot off the clutch quickly after changing gear there is a sort of metallic clank underneath as if something is knocking (comes from the gearbox area) tried testing this by doing about 20mph and in 5th, pumped the accelerator pedal to get a jerkin motion and the metallic clank could be heard clearer, held onto the gear stick and did it again and the gear stick is not moving so don't think it is a gear box mounting, had the exhaust checked today and all seems fine. Noticed when the car was on the ramp at the tyre place by me (had them check the exhaust out) that there is a mounting that comes off the bottom of the engine (I think) via a 6" bar that goes into a square busher, this seems to be OK as well. Is this noise normal or could a mounting have gone somewhere, could it be the clutch? Thing is I get a similar noise when cornering and say hitting a small pot hole with one of the wheels as if that also makes what ever is loose make the clunk. Gonna book it in under Warranty for Audi to take a look as only picked the car up last week. By the way if they do have a look and find nothing wrong do I then get charged for it?