Revving the Engine in P or N Gear?

1 Answers
JuliannaRose
07/25/25 9:58am
You can rev the engine in either P (Park) or N (Neutral) gear, but it is not recommended to do this frequently. The potential harms are as follows: 1. When parked in P gear, the mechanical lock gear teeth can lock the transmission output, and the engine is already disconnected from the transmission, with no power transfer. Revving the engine only increases the engine speed, and the power is not transmitted to the transmission. Like in N gear, it is just idling, and the car will not move. 2. If you only do this occasionally, it will not have much impact on the car. However, over time, the engine temperature will rise rapidly, and the radiator's cooling efficiency will become poor without cold air intake. In severe cases, it may even burn the big and small bearings under the piston. Additionally, it has adverse effects on belts and gears.
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