What are the factors that affect the fuel consumption of semi-trailers? The engine horsepower, cargo capacity, road conditions, driver's driving skills, and the condition of the semi-trailer are all related.

　　The horsepower of the semi-trailer front end varies, and the fuel consumption also varies. For example, tractor brands such as Ouman, Shaanxi Automobile, and Steyr have different engines, resulting in different fuel consumption. The cargo capacity is also closely related to fuel consumption, and the heavier the weight, the higher the fuel consumption. But if there is an abnormal increase in fuel consumption, it is necessary to thoroughly investigate the cause.

　　1. Tire pressure issue. Regularly check the tire pressure of the semi-trailer to see if it meets the air pressure standards. Generally speaking, insufficient tire pressure will increase fuel consumption.

　　2. Tire wear. Regularly check the wear of semi-trailer tires. If the tires of the semi-trailer are severely worn, slippage may occur frequently, increasing fuel consumption.

　　3. Check the bearings and brake system. Regularly inspect the semi trailer bearings and brake system for any malfunctions. If the wheels rotate abnormally, it will affect the vehicle speed and increase fuel consumption.