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How much fuel does a 1.4t engine consume when idling with AC on for one hour?

1Answers
LaPeter
08/28/2025, 11:40:40 PM

1.4t idling with AC on for one hour generally consumes about 1-3L of fuel. Below is relevant information about idling with AC on in vehicles: 1. Fuel consumption issue: There is no problem with idling with AC on, but the biggest issue is definitely fuel consumption, followed by waste. When driving with AC on, the power output consumed by the AC only occupies a very small part of the engine's idling energy. However, when idling with AC on, the engine not only drives the AC compressor but also needs to maintain the normal operation of the power steering/brake booster pump. The latter two functions are completely unnecessary when parked, so keeping them running is a waste of power. 2. Harm to humans: Because the air inside the car cannot circulate, if carbon monoxide from the engine leaks into the car, it will gradually accumulate and increase in concentration, leading to poisoning.

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