The whole car rental process was pretty good. The specific model I reserved wasn't available, so they offered a different car of the same class. However, I had to go to the garage to pick it up and wait. After a long wait, they finally found a car in the parking lot, which was the same model I reserved, a Golf, but it was a diesel TDI version. This car was really great, with quick acceleration and strong pull-back feeling. What surprised me the most was its incredible fuel efficiency; I only used one and a half tanks of fuel for 2051 kilometers, which is unbelievable!!! Additionally, returning the car was a bit troublesome mainly because the roads around Charles de Gaulle Airport are very complicated and almost made me dizzy. But I eventually found the rental return point, and the return process was simple and quick, so overall it was good.