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How much fuel is consumed when idling with the heater on for one hour?

1 Answers

DeIsabela

07/30/25 6:25am

When idling with the heater on for one hour, the car consumes approximately 4 liters of gasoline. Extended relevant information is as follows: 1. Idling with the air conditioner on is related to engine displacement. Generally, the larger the displacement, the higher the fuel consumption. 2. The engine's rotation mainly maintains the operation of the air conditioning compressor, water pump, oil pump, flywheel, etc. If the clutch is engaged at this time (without pressing the clutch pedal), the engine also needs to drive the gears of the transmission input shaft and other components. Therefore, engine idling consumes a significant amount of fuel. 3. When driving on the highway, try to avoid opening the windows too much, as when driving at speeds exceeding 80 km/h, most of the car's fuel consumption is used to overcome wind resistance. Opening the windows wide increases wind resistance, and using the air conditioner is actually more fuel-efficient than opening the windows wide.

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