If you believe your car has been stolen, you can initiate the Motion for Audi Connect Stolen Vehicle Recovery mode. This will help police locate and recover your car. (For your safety, the ability to track your vehicle in real-time will be disabled until it is recovered by the authorities.)
To do so, tap Services in the app, then Stolen Vehicle, and follow the instructions from there.
Note: You first need to contact the police to report that you believe your vehicle has been stolen. The police should then provide you with a report number, which you will need to provide to Audi. Once you have done that, tap Connect with Audi.