1. The reception told me that a petrol version car could only go 200 miles on a full tank, whereas a diesel one could go 500 miles. They persuaded me to upgrade to diesel for 60 Euros. When I got to the parking lot, the staff handed me a beat-up 9-seater Volkswagen diesel. I said I had chosen a Mercedes, but they told me that was the only car available in the same class. I was scammed out of 60 Euros. The fuel cap of this car was broken, and it wouldn't close properly. Throughout my trip, many kind locals tried to warn me in various ways, including making me pull over on the highway. 2. Upon returning the car, I was told that I would be charged extra for exceeding 100 miles per day, which was not mentioned during the rental process. Luckily, I had a Chinese friend from the UK with me, and the staff waived the fee.