What is the fuel consumption of a 1.5L engine idling with AC on for one hour?
3 Answers
1.5L engine idling with AC on for one hour will increase fuel consumption by about 20% compared to normal driving. Here are some methods to reduce fuel consumption: 1. Strengthen vehicle maintenance: Car adjustments and maintenance affect engine performance and driving resistance. Owners should regularly perform routine maintenance at auto repair shops, such as checking tire pressure, wheel alignment, adjusting brake pad and brake drum clearance, lubricating chassis points, timely oil changes, and filter inspections. 2. Avoid prolonged engine idling: Fuel consumption during parking idling is much higher than during normal driving. Therefore, it's best to turn off the engine when the vehicle is stationary for extended periods, such as waiting for someone.
Oh, I often idle my 1.5L car with the AC on while waiting for people. After about an hour, the fuel consumption can reach around 1.5 liters, and sometimes I notice the fuel gauge drops quite quickly. Since the engine consumes more fuel at idle, and the AC compressor requires extra work with slightly higher RPM to power it, the fuel consumption naturally increases. I like to stay cool in the car during hot summers, but it's better not to make a habit of this. A liter of fuel is quite expensive now, and prolonged idling isn’t good for the engine either—it can lead to carbon buildup and affect the car’s lifespan. I suggest not idling for more than half an hour when parked and waiting, as it saves money and is more environmentally friendly.
I've driven several cars with 1.5-liter engines, and the average fuel consumption at idle is about 0.8 liters per hour. However, when the air conditioning is turned on, it jumps to 1.2-1.7 liters, depending on the car model and the efficiency of the AC. The engine has to work harder when the AC is running, so fuel consumption naturally increases. Using the car like this for extended periods not only costs more money but also increases exhaust emissions. Regularly checking the air conditioning system and filters to keep it running efficiently might save a little fuel. In short, occasional use is understandable, like waiting for someone on a short trip, but making it a habit is not worth it—it's unfriendly to both your wallet and the environment.
