They force you to buy additional insurance, otherwise they won't allow you to cross the border. The crossing fee is only 25 EUR, but the insurance costs 66 EUR plus tax, which altogether cost an extra 120 EUR. I booked a C-class but got an X1 instead, which is clearly not the same class in China. Maybe in Germany, X1 has the same price as C-class. I've had a good impression of Hertz before, but this experience was very disappointing. The staff refused to mediate over the phone with the booking agency. It was really frustrating. If I weren't in a hurry, I would've canceled the rental. Do not choose this company.

Very satisfied, as I arrived early and was supposed to wait half an hour to pick up the car, but they were flexible in solving the issue.

The car I reserved wasn't available! Bait and switch! I ended up with a car two levels lower.

Good.

The service at the Frankfurt Airport branch in Germany was just average. When picking up the car, a hold was placed for a full tank of fuel. I booked a Benz C but received a Jaguar X20d diesel car instead. The car felt a bit small, especially the trunk, but the diesel engine did reduce travel costs. I was a bit late returning the car, having mistakenly entered the underground parking and returning it just over ten minutes late. I was charged an extra day because I picked up the car slightly early, despite confirming with the staff that I could wait until 9 AM to collect it. They agreed, but still charged according to the scheduled time. During the pickup, I noticed minor paint scratches and discussed them with the staff, so the actual pickup time was around 9:30 AM, but I didn't ask them to reprint the pickup contract. In the end, I had to negotiate with the manager at the branch, explaining the situation, and they ended up charging me a little under 15 Euros. Typical Germans, very rigid! While they weren't wrong and had a strong sense of contract, their service awareness was practically non-existent!