Oxygen sensor
Mass air flow sensor
Water pump
Front and rear Gaskets
Sun roof assembly.
Drives great, but very expensive to maintain
The dealer labor charges are outrageous and the local mechanic would not touch the car because he says "too many parts"
Your local mechanic does not sound terribly competent. My mechanic works on a lot of these cars and says that the 1.8T model is the easiest to work on. The only reason he does not like working on them is that the parts are expensive and the problems are usually pretty big, so the bills are usually high (though much cheaper than the dealer) and customers come close to tears when they are presented with the bills.