How much fuel is consumed when sleeping in a car with the AC on overnight?
1 Answers
16-20L of fuel consumption; Generally, a 1.5L displacement household car consumes about 1.6L-2.4L of fuel per hour when idling with the AC on. Taking the median value of 2L per hour, and calculating for 8 hours overnight, the total fuel consumption would be 16L of gasoline. For high-displacement engines, the fuel consumption would be even greater. Here are some methods to save fuel when using the AC: 1. Master the timing of turning on the AC: Many people habitually turn on the AC's internal circulation as soon as they enter the car. However, since the temperature inside the car is higher than outside, this method is not effective. Upon entering the car, you should first open the windows for ventilation and turn on the external circulation to expel the hot air. Once the cabin temperature drops, switch to internal circulation. 2. Adjust the air direction: The direction of the AC airflow and temperature settings can also affect fuel consumption. When the AC is on, direct the airflow upward because cold air sinks and can neutralize the rising hot air, achieving the fastest cooling effect. The AC temperature should generally be set around 25°C. It might feel warm initially but will gradually cool down. If the temperature difference between the inside and outside of the car is too large, it can easily lead to catching a cold. 3. Regularly check the AC vents: Ensure that the AC vents are clear and free of obstructions to prevent blockages that could affect airflow. Blocked vents might prompt you to increase the AC setting prematurely, which would also increase fuel consumption.
