My advice? If you are not in a hurry wait for the MK7s to get released if you want a MK6. You will suddenly have quite a bit more leverage for negotiations. I got my car down to $24.5k with msrp at $27.5k. I did so by telling them I was also looking at other cars seriously like the FRS and BRZ. Which I actually was. They offered me $26k and I said that is just not low enough for me to sway me to VW. Salesman texted me back about 2 hours later.
Also, it might be easier if you figure out a monthly payment that YOU want to pay, and tell them to get you as close to that as possible. Talk to the manager of the dealership and be overall very nice but stiff on your price. We got my brother's car down $4k doing that. All depends on the dealer.
I would also pick the smallest dealer you can find. The smaller the dealer the more they need to sell in order to recycle their lot space.