I have a 2004 D3 in black with the same issues, both triangular trim pieces on the rear doors have minor bubbling on the edges & the trim over the rear number plate has a bubbling patch about the size of a 20cent coin. I have made a sucessful claim under warranty through my local Dealer. The work is to be carried out by their bodyshop when the car is in for its next service. The Service Manager photographed the defects & e-mailed them to Audi but it took about 3 months for a response. Worth a go, particularly if you have a stamped up service book. Best of luck with it.
