The reserved Mercedes was unavailable, but they provided a Lexus of the same class. The car was very new and fully equipped. Excellent experience.

Excellent

The car provided was indeed smaller than the one reserved, which is a negative point. However, the store and staff were acceptable.

Overcharging problem: I originally booked an X3, but was told there were no cars available at pick-up. They gave me a 5-series instead and the Hertz staff clearly told me it was cheaper than the X3. However, I was charged an extra 646 Swiss francs.

Hertz's service in Switzerland has always been good. The only downside was that the car window got smashed when parked on the street in Montreux the next day. When we drove to Lausanne to change cars, there was no equivalent model available, and no discount was explained at that time. We had to send an email after the fact to find out how much cheaper it would be. Additionally, in the rush to swap the car (with broken windows and glass everywhere inside), we didn't fill up the gas tank. We had only used a quarter of the gas, but they charged nearly a full tank when settling the bill, which was quite unreasonable given the circumstances.