Do cars consume more fuel in cold weather than in hot weather?

It is normal that the fuel consumption in winter is slightly higher than that in summer, but as long as you pay attention to and care for your car, the fuel consumption can still be stabilized within the controllable range. One of the main reasons for high oil consumption in winter is that the thermal efficiency of gasoline decreases due to temperature.

Experts say that under normal circumstances, the engine needs to be kept at room temperature, which is roughly 80℃-90℃. If the temperature is too high, the cooling system of the engine will automatically increase the water circulation speed of the cooling system, increase heat dissipation and take away excess heat; Otherwise, reduce the circulating speed of cooling water and keep the necessary temperature.

This is also the most basic cooling principle of the engine. Knowing this principle, it is not difficult to understand that the engine needs heat preservation rather than heat dissipation in winter. Due to the influence of flowing air, the temperature of the engine is not easy to keep around 80℃. The engine will increase fuel injection and change the ignition advance angle to maintain the temperature.

At the same time, the thermal efficiency of gasoline in cold weather is much lower than that in summer. These factors naturally make the fuel consumption of cars in cold weather in winter higher than in other seasons.

It is normal for fuel consumption to increase slightly in winter, because many riders, especially car owners, keep the habit of preheating their cars. Although this is a good habit, preheating the car for a long time and waiting for the heater will increase fuel consumption.

The reason for the increase in fuel consumption may also be related to the water temperature or air temperature sensor, or other components of the air flow meter or electronic system, which may lead to the increase in engine fuel consumption due to low temperature failure. Don't worry if the fuel consumption only increases by 1-2 liters. If the fuel consumption per 100 kilometers increases by more than 5 liters, it is an abnormal increase. Owners who encounter similar situations should maintain their vehicles in time or go to a professional repair shop for repair.

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