How much fuel does a car consume when idling with the AC on for 3 hours?

[DeGeorge]

According to relevant tests, the fuel consumption of a car idling with the AC on is related to many factors such as the car's displacement, AC power, external environment, and engine tuning. For typical family cars, idling with the AC on for one hour consumes approximately 1-2 liters of fuel, though this may vary depending on the model. Here are some details about car fuel consumption: 1. Influencing factors: The relationship between car weight and fuel consumption is directly proportional. It is said that for every 10% reduction in car weight, fuel consumption will decrease by a certain percentage. Similarly, lower aerodynamic drag leads to significantly reduced fuel consumption, and this relationship is also directly proportional. 2. Precautions: Ensure tires are properly inflated in a timely manner; regularly clean carbon deposits at a service station; replace spark plugs periodically, as prolonged use of spark plugs can lead to increased fuel consumption.