Picking up the car took some time due to the registration process, but returning it was quite fast.

Booked a Mercedes, got a Ford

The car was fine, but the German lady at the rental office was extremely grumpy. Just arriving in a foreign country and not yet accustomed to the English environment, I was slow to respond, and she was incredibly impatient. She misread my order and I had to argue with her for over half an hour until another employee came and sorted out my order. Due to the additional half-hour, I was charged for an extra day of rental. I asked for a refund through the rental platform, and also disputed the charge with my credit card company. When neither route seemed to work, the rental company proactively refunded me for the extra day. Lifelong fan of this rental platform.

Picking up and dropping off the car at Frankfurt T1 was very convenient. Simple procedures. I rented a Passat wagon, but actually received a new Toyota diesel wagon. When returning the car, I noticed a small scratch on the trunk, but the staff generously said no need for compensation. Very satisfied.

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