Absolutely nothing
With a reservation we were told they only had one car similar. We went to get in and the side mirror was destroyed and taped to the car. We went back to the desk and they offered us a van, for 2 people! Sorry that's all we have. Such incompetent people and to offer an unsafe vehicle is unacceptable. We had to hire a taxi, go to the central train station and two hours later we're finally on the road. Germany efficiency at its best. Avis is a joke.