When renting the car, I was upgraded from a small manual car to a larger automatic car at no extra cost. However, when returning the car, there were two small scratches on the edge of the tire which I believe were not caused by me. It seems designed so that renters won't notice them when picking up the car. Before I even reached the parking lot to return the car, two people were already waiting to inspect it. They went straight to the scratches and asked if I had purchased insurance. As I didn't purchase insurance, I was required to pay nearly 2800 yuan for the damages at the minimum rate, and I had to sign to confirm on the spot. I couldn't prove that the scratches weren't caused by me, so I had no choice but to sign. I think such business practices harm the reputation of the rental platform.