Yesterday I had my 2001 S3 stolen from outside my house in the middle of the night. However noticing it had gone I called the police and then Tracker. Within a few minutes of the tracker system being activated the police had picked up the signal and within the hour they had arrested a number of people in connection with the theif of my car. A good result. My question is how did they drive the car away? I have all 4 sets of keys but the police say the lock cylinder has been damaged but there is no damage to the door locks. Without the keys it would appear that there is only a small window of opportunity after opening a door to override the alarm system by either presenting a valid transponder (a duplicate has been made?!) or making the alarm believe it has been presented with a vald transponder. Even if the alarm didn't work for some reason a valid transponder is still required to start the engine. Does anyone know of cases where Audi's have been driven away without using a key? I'm wondering whether a 10 year old immobiliser is still up to the job any more? What does everyone else do? I assume it is not hard to add an additional immobiliser to an Audi S3? I'm not looking forward to seeing the damage to the lock cylinder or the quote for repaires from Audi.