If it is a minor scratch, it is only a minor scratch, and the primer can be repaired by waxing. The maintenance cost is probably around 50 yuan.

If it is a moderate scratch, the car paint is damaged and the primer is exposed, it needs to be repaired by painting, and the cost is about 300 yuan.

If the door is deformed due to moderate scratch, it will involve sheet metal repair and paint repair, and the cost will probably be around 500 yuan.