2. When a car is driving, it will inevitably lead to parts wear, and the more frequently it is used, the faster the aging degree will be. For example, the tires are particularly worn, which means you have to drive at least 55,000 kilometers. In addition, the car usage records are reflected in the maintenance records and insurance records, and you can find relevant information to understand the mileage of the car. There are also 4S shops that use special instruments to check the real mileage of cars, which is checked by the speed of the gearbox computer board and the gear position of the gearbox.