Avis's service was good, but they were slow.

Very good, the car was new and the entire trip went smoothly. The only issue was that I had to wait at the rental counter in Frankfurt airport, and the process was a bit slow.

The reserved Golf was not available, so I was given a diesel Nissan Juke. The car was in good condition, had good handling, and was fuel-efficient. Avis's car pick-up and drop-off at the airport were quite convenient, and their service attitude was decent, though the wait time when picking up the car was a bit long.

Free upgrade: I was worried that our luggage for a group of four over 11 days wouldn't fit. After checking many cars back home, we finally booked a Passat station wagon. But I was still a bit concerned. At pickup, the rental contract stated OPEL. I thought I got an Insignia station wagon and figured it definitely wouldn't fit. I asked in my broken English if this car was bigger than the Passat. The staff assured me that it wasn't smaller. Skeptical, I went to the garage. To my surprise, as there were no other station wagons, they upgraded me to a brand-new Opel Zafira, registered on September 22, with only 8 kilometers on it. We filled the trunk completely. Note that during the rental process, a full tank fuel cost is precharged. As long as you return it with a full tank, you won't be charged for fuel, which is an option available when you choose to return the car with a full tank on QEEQ.