Audi Steven Creek Service Department puts _its profit_ over many things including its integrity in giving you a fact based assessment of your vehicle. Please take _extra_ caution if you get your car service there especially when it is out of warranty.
My misfortune this passed summer 2007 was I misplaced my trust and let them change my time belt at 60K miles. I later discovered I didn't need it till 80K miles. I could have SAVE $2K off my service bill. The service advisor David said it was normal wear and tear during my visit. When I approached him afterward, he changed his story and said it was oil on my belt. His lack of integrity was _unbearable_. I saw this behavior at the service advisor level and management level. I met with their service department manager and learned that this unethical business practice is one way for them to increase their profit.
My advice to you is when they say "your car _need_ something", get a second professional opinion before placing your trust on them especially when your car is out of warranty.