The basic question is whether it is possible to install a radio with a double-din size. I did it for another car and had to buy a panel for it, as well as the plug adapters (factory plugs to ISO). If you're not sure enough or want to rely on internet research, I would ask at an Audi garage for the parts (when I did it, they said it could be done, but they would also order it on the internet, so I could do it myself).