Is running a new car engine at 5000 RPM harmful?

1 Answers
JacksonAnn
07/29/25 3:44pm
Generally, running a car engine at 5000 RPM is not harmful. Engine protection mechanisms are quite robust, and if the engine operates under extreme conditions, fuel cutoff protection measures are usually activated. Below are the hazards of excessively high or low RPM: Hazards of excessively high RPM: Occasionally reaching 5000 RPM may not harm the engine, but maintaining such high RPM for prolonged periods can significantly increase fuel consumption. Hazards of excessively low RPM: However, don't assume that low RPM is good for the engine. For typical family car driving, the engine RPM usually varies between 2500-3500 RPM, with idle speeds generally around 800-1500 RPM. If the engine RPM is too low, fuel combustion in the cylinders becomes incomplete, leading to carbon buildup, which can cause more severe engine damage over time.
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