How many liters of fuel does a 460-horsepower engine consume in one hour of idling with the AC on?
2 Answers
A 460-horsepower engine typically consumes about 3.5 liters of fuel per hour when idling with the AC on. Configuration: Equipped with a Xichai 460 high-horsepower AMT 800L large fuel tank, Xichai engine with a displacement of 11.05L, maximum 460 horsepower, maximum torque of 2200N/m, CA12TAX210A3 AMT transmission with 12 gears, 435 welded axle, ECAS electronically controlled air suspension system, ABS/ASR anti-skid/hill start assist system, multifunction steering wheel, independent heating, electrically heated seats, water-heated split-chamber fuel tank, and independent air conditioning. Advantages: Lighter weight. Lower fuel consumption. Reduced operating costs.
After driving for so many years, I estimate that a 460 horsepower engine consumes about 1.5 to 2.5 liters of fuel per hour when idling with the AC on. High-performance cars usually come with large-displacement V8 or V6 engines, which inherently consume fuel to maintain idle operation—typically around 1 to 1.5 liters per hour. When the AC is turned on, the compressor is driven by the engine, increasing the load by about 20%, which pushes up fuel consumption. The actual value also depends on external temperature. In hot summer weather, the AC has to work harder to cool, potentially raising fuel consumption to 2.5 liters or even higher. Vehicle condition also plays a significant role—if the engine is old or the AC system isn’t well-maintained, fuel consumption may exceed estimates. In any case, I often advise friends not to idle for too long—it’s both a waste of money and bad for the environment. It’s better to turn off the engine after parking, especially since a liter of fuel isn’t cheap.
