I know I am not on my own but I am seriously dissapointed in Audi as a dealership now - '08 plate 2lt Audi A4, 40,000 miles, full service history and my wife breaks down on 5th January.
Fault was diagnosed as oil pump failed which has a modified balancer shaft which is such a design change - i.e. a recognised fault, that a new sump needs to be fitted too.

Major supplier issue and part not available with an undefined delivery date so vehicle off the road. Contacted HQ "customer service team" who will not acknowldge a problem but will loan me a car whislt my wifes is off the road BUT they need the car and their charge is at least £800 more than my quote. The parts alone are circa £1500 plus circa 10 hours labour - only 8 months out of warrenty and plenty of A4's & 6's with this issue.

Retorical rant really as the only ones who can change my situation is Audi and the ycouldn't give a stuff so I am now letting as many people know about tehir lack of care and try to put people off buying them where ever possible.