Why does the car's speed not increase when stepping on the accelerator, but the RPM goes up?

1 Answers
ChristianLee
07/30/25 2:02am
When stepping on the accelerator, the car's speed does not increase but the RPM rises, indicating significant energy loss in the power transmission between the engine and the transmission. The fact that the RPM increases when stepping on the accelerator suggests that the engine's power operation is functioning properly, but there is damage in the components transmitting power to the transmission. Methods to save fuel when stepping on the accelerator: 1. Avoid aggressive driving: Rapidly stepping on the accelerator after stopping, hard braking, and sudden acceleration all increase fuel consumption. 2. Maintain steady speed: If the car can maintain a speed between 60 to 90 kilometers per hour on the road, it can significantly save fuel. In contrast, fluctuating speeds will increase fuel consumption. 3. Use cruise control: Selecting cruise control on flat roads can help save fuel, but this method is not the most economical on steep terrain.
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