Guys,..
I'm a newbie to this forum, as I have just purchased a 2006 A3 1.9 TDi 8P,.. and also have clutch vibration / judder,...
I have found an official Audi cause of such, {assuming you have 8P ]
Believe it or not,.. this is due to excess crankshaft end float !!,.. and the Audi fix, is...