What are the factors affecting car fuel consumption?

[SanAlan]

Car fuel consumption is related to additional products such as air conditioning and environmental factors during vehicle operation. Fuel consumption standard: The fuel consumption standard is an important indicator for measuring a vehicle's fuel economy. Fuel economy is typically measured by the amount of fuel consumed by a vehicle over a specific distance under certain driving conditions or the distance a vehicle can travel with a certain amount of fuel. It is commonly evaluated using the fuel consumption per 100 kilometers (liters/100 km). Definition of constant-speed fuel consumption: Constant-speed fuel consumption refers to the fuel consumption per 100 kilometers obtained from fuel consumption tests conducted at constant speeds for certain types of vehicles as stipulated by national standards. These vehicles include M1 category vehicles, M2 category vehicles with a maximum design total mass not exceeding 3.5 tons, and N1 category compressed natural gas vehicles; as well as M1 category and N1 category vehicles with a maximum design total mass not exceeding 3.5 tons.