How much fuel does a sedan consume when idling with the AC on for one hour?

2 Answers
DeColin
07/25/25 6:52am
The fuel consumption of a sedan with the air conditioning on for one hour is 1-3 liters. Introduction to Air Conditioning: The automobile air conditioning system, commonly referred to as car AC, is used to regulate and control the temperature, humidity, air cleanliness, and airflow inside the vehicle cabin to optimal conditions. It provides a comfortable environment for passengers, reducing travel fatigue, and creates favorable working conditions for the driver, playing a crucial role in ensuring safe driving. Generally, it includes cooling devices, heating devices, and ventilation systems. This integrated system makes full use of the limited space inside the car, featuring a simple structure and ease of operation, making it a popular modern car air conditioning system internationally. Precautions for Using Air Conditioning: The car air conditioning system requires regular refilling of refrigerant. Prolonged neglect can lead to reduced cooling efficiency and slower cooling speeds. It is also essential to clean the car's air conditioning system regularly. Failure to do so can result in the growth of bacteria within the system, potentially harming the health of passengers.
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DiDaniella
08/10/25 6:20pm
My little car consumes about 1 to 1.5 liters of fuel per hour when idling with the AC on, especially during hot summer days. It might be slightly more fuel-efficient when the engine is cooler. I've been driving this car for years and often do this while waiting during commutes – you can literally see the fuel gauge drop. Since the AC compressor is driven by the engine, idling already burns extra fuel, and the cooling load makes it even worse. Never leave your car idling with AC for too long – it's wasteful and harms your vehicle. Prolonged idling causes carbon buildup and increases engine problems. My advice: just roll down the windows for short waits, or park in shaded areas. It's safer and saves you trouble.
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