Previous rental did not include insurance. The Avis staff added insurance without informing us. Be cautious of this pitfall when renting a car.

It was convenient to pick up the car following the signs at Frankfurt T1. I switched to a VW Golf DTI which was a bit more expensive but worth it. Drove up to 200 km/h, thrilling! Returning the car was a bit tricky with the GPS, easier to follow the airport signs, T1 arrival, then follow the car rental directions.

The staff was nice, but the waiting time was just too long. We had to wait for a very long time. In Germany, it’s mostly self-service. They give you a key once everything is done, and then you walk to the parking lot to get the car. The Munich parking lot was the multi-story type, and after coming down, we lost the GPS signal in the congested streets. No... signal... at all, so we drove randomly for a while before the navigation started working. But the car was very clean. We returned it at Frankfurt airport; you just hand over the car, and it's done. Super convenient. Renting a car in Germany is awesome.

The attitude, waiting time, and vehicle condition were good, but the coolant was not sufficient. By the fourth day, the car's radiator alarm went off. The customer service's English was poor, and they hung up after failing to understand me. Very disappointing! The reserved Mercedes A was unavailable, and the only replacement was a Skoda. I wanted to upgrade to a C or E class, but none were available. I'm starting to think AVIS uses Mercedes as a gimmick to attract customers but doesn't have any in stock. They just claim they're rented out!

The staff was friendly and didn't try to upsell. Picking up the car was also convenient.