Does a car consume fuel when idling for one hour without turning off the engine?

[PaisleeMarie]

Starting the car and idling without moving will consume fuel because the internal components of the car are still running. Additional information: 1. The hazards of carbon buildup in cars: Carbon buildup has many negative effects on the engine. If there is carbon buildup on the piston top, it can increase the engine's compression ratio, leading to engine knocking. Knocking can cause increased fuel consumption and reduced power output, and it is also harmful to the engine itself. Severe knocking can even lead to connecting rod deformation or piston cracking. 2. Prolonged idling: Even though the vehicle is not moving, it still consumes fuel and can easily lead to carbon buildup, which can block the engine's intake and exhaust ports. Over time, the vehicle's power output will become a very noticeable issue, making it feel like the accelerator pedal takes a long time to respond.