Does a Car Consume Fuel at Idle Speed?

1 Answers
LeZoe
07/30/25 8:14am
As long as the car's engine is running, it will consume fuel. Here is the relevant content introduction: 1. Principle: At idle speed, the engine must be ready to respond to the driver's starting operation at any time. When starting the car, the vehicle changes from a stationary state to a moving state, so the engine needs to generate more torque than during normal driving. 2. Meaning of car idle speed: It refers to the condition after the car is started, under any load and without the need for external work, where the engine maintains the lowest and most stable speed by controlling the throttle solenoid valve's air intake through the onboard ECU. Different car models have different idle speed values due to different engines. Generally, the idle speed value ranges between 500 to 850 rpm, while the idle speed during a cold start can be around 1500 to 2000 rpm.
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