What are the criteria for classifying a vehicle as an accident-damaged car?
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Main determining points include the vehicle's ABC pillars, front and rear longitudinal beams, and shock absorber mounts. Below is an introduction to relevant automotive repair content: Definition of Sheet Metal Repair: Sheet metal repair for motor vehicles is performed when the vehicle's exterior is damaged or deformed, requiring the use of sheet metal repair methods to restore the damaged areas. Sheet metal repair places relatively high demands on technicians, who must understand the characteristics of body materials, the stress properties of the vehicle body, and the welding techniques involved. Only with this foundational knowledge can a technician properly perform sheet metal repairs. Post-Repair Precautions: After an accident-damaged car is repaired, it is advisable to keep the engine speed below 4,000 rpm. Newly replaced parts require a break-in period and are not suitable for high-intensity operation; vehicle speed should also be kept moderate. After driving a certain distance, the vehicle should be taken to a repair shop for testing of relevant data, such as whether the tires are wearing evenly or if the suspension components are deformed, with necessary corrections made as required.