What is the high fuel consumption of BYD Song pro?

The reasons and solutions of BYD Song pro's high fuel consumption are as follows: 1. Due to the influence of temperature, the increase of fuel consumption is affected and the situation is normal. If the temperature is low in most winter, the fuel consumption is basically one, which is similar to turning on the air conditioner in summer. This is because the temperature is low and the heat released by the engine increases. Secondly, it takes a long time to warm up the car in winter, and it takes time and more gasoline from starting to normal water temperature. This car has not been maintained for a long time. If the oil and air filter are dirty, it may also increase fuel consumption. Oil pollution will lead to poor lubrication, and the resistance of all moving parts of the engine will increase. It takes a lot of energy to overcome the resistance, and the fuel consumption will get worse. The vehicle needs regular maintenance. 3. Spark plugs. Spark plugs are easily overlooked. There are also vehicles that have not been replaced even after driving hundreds of thousands of kilometers. The spark plug can still be used at the end of its life, but the best ignition period is missed due to insufficient ignition energy and delayed ignition. For example, gasoline should be ignited when the piston is near the top dead center, but the ignition energy is insufficient and it is difficult to ignite. When the piston starts to move downward and then ignites, it will lose some power and produce a lot of energy that can't be used to do work, which leads to poor combustion. 4. Insufficient air pressure. Insufficient air pressure will affect the contact area between the tire and the ground and increase friction, that is to say, driving resistance will increase and fuel consumption will increase. Insufficient air pressure may reduce the life of tires, and high-speed driving will also increase the probability of tire puncture. Tire pressure must be maintained regularly and checked once every two months at most. If there is tire pressure monitoring, you can check it directly. If there is no tire pressure monitoring, each tire should be measured manually. 5. The data of some sensors such as water temperature sensor and oxygen sensor are inaccurate. It's just that the sensor is not completely damaged, the data is inaccurate, and the fault indicator light is not necessarily on, which is difficult to detect even if the data flow is not checked by the computer. For example, the temperature from the water temperature sensor is low, and the oxygen content displayed by the oxygen sensor is too high. In most cases, the computer must be adjusted to inject fuel for many times, which will eventually affect the incompleteness of combustion, increase fuel consumption and maintain the sensor data regularly. 6. The vehicle has too much carbon deposit. The carbon deposit is located at the throttle, injector, air inlet and piston top. Too much carbon deposit anywhere will basically affect the combustion and exhaust, and then affect the increase of fuel consumption, so it is necessary to remove carbon deposit from vehicles.