When we arrived at the store, we were informed that the pre-booked Passat station wagon was unavailable. They suggested switching to an Audi, but that was also unavailable. Ultimately, we were given a Mercedes E200D station wagon. Since we specifically chose the Passat for its large trunk space to accommodate our four suitcases, this change was unexpected. The staff explained that the Mercedes would also be sufficient for five people and four suitcases. With no other option, we asked about the additional upgrade costs, signed the contract, and received a detailed breakdown of charges. This included the amount we paid in full beforehand in our home country, the upgrade cost, service fees, and cross-border charges. The total upgrade and associated fees over two days came to 322 euros, plus a 300-euro deposit via credit card pre-authorization. Following the instructions, we went to the parking garage to pick up the car, which had a mileage of 15,000 kilometers. During pickup, we noticed visible scratches on three of the wheels and took photos. Over the trip, we traveled 3,700 kilometers, and upon returning the car, the staff inspected the wheels. I explained the pre-existing scratches and offered to show the photos, but the staff member said they were already aware and confirmed there was no issue. A few days after returning, the 300-euro pre-authorization was canceled. I was surprised by how quickly it was processed—could they handle traffic violations that fast? Either way, it worked out well for me. Overall, this car rental experience went very smoothly.