The car pick-up process went smoothly, but returning the car was a bit complicated. The reason was that the pick-up location employee gave the wrong address for the drop-off location, wasting half a day and adding over 500 kilometers. Overall, it was fine.

Not being located within Frankfurt Airport is very inconvenient. After calling the contact number provided, we realized it was in German, which we couldn't understand. We had to get help from the rental car customer service to reach the store. We waited for about 20 minutes to be picked up at P19. The service staff was very friendly, but the car provided was disappointing. We booked a Passat wagon, but they gave us a Renault Scenic. As someone who doesn't drive French cars back home, I was already skeptical. And my concerns were confirmed — the car was underpowered and very unstable at 130 km/h. It was also a manual, and being unfamiliar with the road conditions, driving it was exhausting. On the third day, we arrived in Munich and contacted the rental company to upgrade the vehicle. We found a Kia SUV at a nearby Munich Airport location. The new car had excellent power, a stable chassis, and many features, allowing us to complete the trip smoothly. However, there was a small incident when returning the Renault at the Munich Airport store. I realized I had left my sunglasses on the dashboard. When I went back to retrieve them, one of the staff had just driven the Renault out. I informed the reception, and they asked me to wait, saying the staff member would return soon. Half an hour later, the staff returned, but my sunglasses were missing. The staff member claimed to have never seen them. Without any evidence, I had no choice but to accept the loss. This incident taught me that not all Germans are highly trustworthy.

The cars from Caro are very new. I booked a Mercedes C-Class station wagon, but they gave me a brand new Mercedes E-Class station wagon upon arrival. An upgrade without additional cost, fantastic! The car was diesel, very fuel-efficient, and powerful, easily reaching 220 km/h on the highway when there was little traffic. The pick-up process was very simple. I had reserved to pick-up and drop-off at Frankfurt Airport. Upon arriving in Frankfurt, I contacted the car rental company, and a friendly gentleman driving a Caro-branded van met me at the airport's Exit 5, holding an A4 paper with my name on it. He drove me and my luggage to the rental office, checked my driver's license and notarized documents, swiped the deposit, got my signature, and I was all set to go. It was a pleasant start to my road trip! When returning the car a day earlier than planned, I filled up the tank and arrived at the return point at 9 PM. The company's staff had left for the day, so I contacted Caro, and they told me to drop the car keys in the mailbox for self-service return. Not feeling assured, I drove the car back to the hotel and returned it the next morning. On the way, I encountered the Caro van and tailed it to the return point. The gentleman drove very skillfully! After some back-and-forth, the fuel gauge dropped slightly. I explained the situation to the gentleman, and he waived the extra charge with a wave of his hand. Amazing service! It was a smooth and pleasant car rental experience!

Not satisfied at all. When picking up the car, they didn't mention checking the front glass. When returning the car, they claimed there was a scratch, but we never went anywhere that could cause it. We found the rear side dent ourselves, and then the rental company noted it. If we hadn't found it, it probably would have become our fault just like the front glass.

Good value for money, vehicles are relatively new