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

1 Answers
VanCarter
07/29/25 1:17pm
When a car idles with the air conditioning on for one hour, it consumes approximately 2 liters of fuel. Below is an introduction to engine idling: The engine primarily maintains the operation of the air conditioning compressor, water pump, oil pump, flywheel, etc. If the clutch is engaged (without pressing the clutch pedal), the engine also drives components such as the input shaft gears of the transmission. Engine idling consumes a significant amount of fuel, as it only powers the air conditioning compressor, leading to higher energy consumption. Prolonged operation at high temperatures may also result in carbon dioxide buildup.
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