A3 was not in a good shape and very dirty. We decided to upgrade for a passat CC for a 25€/day extra. The car drove us well but had serious electronic/sensors issues which made us feel a bit axious during the trip. The car rental guys were very nice though. I took this pic while driving. I sometimes had all the alerts turned on and the speedometer/RPM not working while driving. Very scary. But the rental guy told me it was "normal" so i kept on going and the car appeared to be ok all the way (around 900km).