Does revving the engine in neutral gear harm the car?

1 Answers
Luke
07/30/25 1:35am
Revving the engine in neutral gear can indeed harm the car. When in neutral, the engine lacks resistance, which can cause the RPM to rise excessively. High RPMs primarily increase fuel consumption. Additionally, excessively high RPMs can lead to abnormal engine wear and place excessive load on the transmission gears, potentially causing gear damage in severe cases. Prolonged revving can also raise the engine temperature, and without cool air intake, the radiator's cooling efficiency significantly decreases. Even though the gear is in neutral, the transmission's input shaft continues to rotate, causing all components except the output shaft and synchronizers to move. This uneven movement can result in uneven wear and stress on various parts.
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