I'd find a local VW/Audi specialist and take it there if the car is out of warranty. All the dealerships I've ever dealt with (Audi and Volvo) are just after your money. My last 120k service went from £300 for the service cost (and that was discounted) to over £900 when they told me what needed doing.
I told them just to service the car, I didn't need 2 new tyres at £100 each, new wipers, new indicator bulbs (because apparently the ones on it aren't yellow enough), etc etc. They even tried to get me to change the rear damper boots, I got it home and just turned them around, theyre only cracked on one side (the spray side). Now they'll go for another 50k
Tom