Had a rattle from passenger doors over 60mph which was driving me crazy. Took it to Audi and they found a stone trapped between underside sield and floor pan. Since they removed it it's rattle free again.
Water leak was my first thought. But checked all footwells and boot but it all seems dry. Recirculation was on constantly. So glad its ok now. Had couple more bits done at Audi dealer and they only charged me for diagnostics. Win-win for me
Had same issue. Took it to dealer which said its phone hardware issue. Ive told them to check it anyway as i had few more bits done. After inspection they said it was mmi software that was causing it so they updated mmi to latest version and it works as dream now.
Had same problem on S5 coupe. Had to had it on a/c constantly. As soon as you turned a/c off windows started to mist up quite badly and also felt quite damp inside. Tried everything from pollen filter to even putting dehumidifier in for a night but no joy. So went to a dealer and diagnosed that...