What is the engine speed of a car?

1 Answers
McIsaac
07/30/25 7:26am
The idle speed of a car engine is around 700 to 800 rpm, the normal driving speed is around 2200 to 2500 rpm, and the maximum speed is around 4500 to 5000 rpm. Too low speed can cause engine shaking, while too high speed can lead to engine damage and increased fuel consumption. The reasons for unstable tachometer readings are: 1. Oil accumulation and carbon deposits in the throttle; 2. Dirty intake tract; 3. Fuel path blockage represented by the fuel injector; 4. Intake pipe malfunction. The function of the engine is to convert the thermal energy of gasoline or diesel into mechanical energy by burning and expanding the gas in a sealed cylinder, thereby pushing the piston to perform work.
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