The left front wheel has a flat tire when passing through the bad road surface, which may be caused by the looseness of the left front mechanism or the damage and deformation of parts. It is suggested to standardize driving and adjust the direction of vehicles to the maximum extent to reduce the burden on vehicles. If you encounter noise, check the appearance of the vehicle, including whether the headlight assembly, fender, bumper and wheel cover are damaged, and whether the tires are damaged. If you are not sure about the fault location, you can go to the 4S shop to pick up the car and check whether the chassis and parts are loose. The noise generated when the vehicle is driving at high speed may be caused by vibration. This noise has nothing to do with the safety factor of the vehicle and can be reduced by noise reduction. However, if abnormal noise is found during driving, and you are not sure whether the vehicle is faulty, you must not continue driving to avoid the vehicle getting out of control. Maintenance is quite convenient, as long as the fault location is confirmed one by one, it can be handled.