I bought my 2005.5 Jetta three months before I got my GTi, I was really nice to the salesman and when I came back and asked for him he set me up with a deal. I also send my racing buddies to him!!! That helps.
My experience with VW:
1. Let them give you a deal.
2. You give them a cheap deal ( they are not going to sell it to u).
3. Tell them to think about it and if anything let them call you. And I bet you will at least get the price between their offer and yours if not straight up your offer. I offered them a DSG for 23,000 out of the door ( including taxes and all fees). Guess what he called me. Told him no: changed my mind.
it's always a time game. the longer you can wait the better deal you'll get.
took me a week to get the car down to $22.5k out the door. couldn't wait anymore and i know i getting a decent deal especially for a new model.