How much fuel does an empty car consume when the air conditioning is on?

[DelAllie]

Generally, a car consumes 20% to 30% more fuel with the air conditioning on compared to when it's off. The maintenance methods for car air conditioning are as follows: 1. Poor door sealing: It's common knowledge to use air conditioning in a fully enclosed state. The same applies to car air conditioning. If the doors and windows are not tightly closed during use, the cooling effect will be poor, and fuel will be wasted. 2. Random adjustment of air outlet direction: Some car owners do not pay attention to adjusting the direction of the air conditioning airflow, which is not conducive to achieving the best performance of the air conditioning. According to the principle that cold air sinks and hot air rises, the correct approach should be to direct the air outlet upward when cooling and downward when heating. 3. Prolonged use of air conditioning: Some car owners often keep the air conditioning on continuously after starting the car. However, prolonged use of the air conditioning can increase the pressure on the condenser, causing wear and tear to the cooling system. This is because the air conditioning is a heavy load on the engine, and the engine itself is a heat source, especially in hot weather.