We can help you with a roof rack for your 2015 Audi A7 but there are no hitch fits for the TDI.
The Thule roof rack system we offer is meant for the Sportback version with no existing rails or crossbars on the roof. For this vehicle we offer a square bar rack from Thule that is made of parts # TH712200, # TH710501 and # TH145102. view full answer...