After I picked up my 2001 Beetle, I noticed a slight vibration / rumble feeing through the clutch pedal. When I was at the dealership I ask them to check it. The Tech said this was typical of the TDI. He said he would look at it but suggested I go out on the lot and start up a few TDI cars and see how they compared to mine. Well, I did
just that. They had 2 beetle TDI and 3 Golf TDI cars on the lot with manual trans. I tried 3 of them and sure enough, they all had this vibration / rumble feeling in the clutch pedal. So, I guess maybe its just part of owning a TDI. He suggested that I keep and eye on it and if it gets worse, let them know before my warranty is out and they will replace it along with a new clutch at no charge, so that seemed like a fair deal to me.