Because at present, many people change cars for two reasons: upgrading their cars or having a big accident and not wanting to continue using them. When looking at the car, carefully observe whether there are any traces of spray paint on the door frame and window sealing strip. If there is a crack in the paint mark of the door frame, you can be more sure that the door has been repaired. Secondly, you should check the welding points of the frame under the hood. The original solder joint is smooth and fine, and the repaired solder joint is generally rougher than the original solder joint. If this phenomenon exists, it means that this car has had a serious accident. Third, if conditions permit, you can use the elevator to lift the car and check the chassis to see if the chassis components are aging or damaged.

Second, pay attention to the tires.

The degree of tire wear can reflect the frequency of a car, especially the front wheel. If the pattern is flat and the edges are completely angular, it means that the original owner often drives and doesn't care much, so he can score the used car from one side.

The third measure is to observe the body.

Turn the car patiently for a few more turns, carefully observe the edges of the fender and axle, and see the degree of wear and corrosion of the parts. Or look at the outer end of the exhaust pipe to check the degree of aging or rust.

Fourth, pay attention to the appearance and operation of the engine.

Check the appearance of the engine and carefully check for signs of oil leakage. Light the engine and observe the color of the exhaust gas. If the exhaust gas is translucent light gray, it means that the engine is in good working condition. If it is blue, it means that the engine is very tired. White indicates that the cylinder gasket will be scrapped. In addition, the smell of waste can be smelled, indicating that the engine is in poor condition.

Fifth, pay attention to the brakes.

Don't start the engine, first step on the brakes a few times, then continue to step on the brake pedal and start the car in neutral. If the brake pedal feels attracted, it means that the vacuum booster system of this car is normal. Be sure to test drive, focusing on the engine sound and acceleration performance, whether the chassis has abnormal noise, damping effect, whether the direction and clutch are heavy, and braking reliability (try to find a road with few people and good road conditions, drive the car to more than 60 yards, and then suddenly brake to see if there is a high-frequency braking effect)

The sixth trick, don't "lose big because of small"

The most important parts of a car are the body and engine. There is something wrong with the appearance of used cars. When choosing a car, don't make a fuss about some small scratches on the appearance of the car. The working condition of the engine, the condition of the frame and the accident are the most important problems you should pay attention to when buying a used car. Generally speaking, when choosing used cars, try to choose those models with big brands and large market share. Some rare imported cars, even if they are good in color and low in price, should be cautious. Perhaps the original owners decided to give up their love because of the difficulty in maintenance and the high price.