Just sold my A3 and the new owner is telling me the radio is switching itself off randomly! He's on a 7 hour journey after picking up the car and its happened a few times so far en-route. It has happened to me in the past but only a handful of times, very rarely, not enough for it to be worth investigating. The car is still under warranty (07 plate 2.0 TDi sline) so should get fixed ok by Audi under warranty but just curious if anyone has had the same problem? Cheers!