N3 of 25,000 yuan is basically about two years. If you want to buy a local car in Tianjin, don't buy a rental replacement and try not to buy it from a trafficker. Looking at Tianjin's used cars from the market or 58 cities. Now the second-hand cars in Tianjin are basically stable, with no big fluctuations. When buying a car, you mainly look at the corners of the car, whether there is a bump, and the small bump is not a big problem. See if the color of the car body is uniform, and if there is any place to spray paint on the car. If the color of the cover or door is different from that of the car body, you can change the cover or door and see that the upper and lower positions of several doors are different. What is the sound when opening and closing, and the size of the gap between the door and the door? If the gap size of several doors is very different, it means that the doors have flashed or hit. After looking at the exterior, look inside the car. It's not too dirty and there's no big damage, because if the car has internal organs. If you don't like to maintain your car, you can't even maintain the place where you sit every day, let alone other places. After looking at the interior, open the cover to see the position of the front and two shock absorbers. In jargon, it is to look at the hood, mainly to see if there is any paint or plastic on the hood, which is difficult to cover up. If you move, you will leave traces. Look at the two arcs on the shock absorber. If you move there, it proves that the car has had a big accident and can't sit, then look at the chassis. Knock on something and you'll be fine. That's all you can see. Then you watch the machine after driving. First of all, you will see whether the idle speed is stable, whether the machine sounds crisp and noisy after the car is heated, and then you will see whether there are a lot of oil stains on the machine, especially at the joint between the cylinder head and the cylinder block, whether the machine shakes after the car is heated, whether the tail gas color is normal and whether it smells of burning engine oil. After reading these, you can try them on. Feel the transmission, whether the shift is smooth, whether the brakes work, the steering wheel clearance, whether the car shakes when driving, whether it will take the car when accelerating sharply, whether the car will deviate when the steering wheel is released and going straight, whether the direction is dead when turning, and whether there is noise in the ball cage. These are basically all these. The other is whether the small appliances such as car lights have functions or not, so there will be no big problems, even a little malfunction.