What Happens If You Accidentally Shift to P While Driving?

2 Answers
VanAlexa
07/25/25 3:52pm
If you accidentally shift to P (Park) while the car is moving, although the P gear can be used to achieve a braking effect when the car's brakes fail, suddenly shifting into P during normal driving will produce a series of very loud noises, which come from inside the transmission. Of course, this doesn't cause significant damage to the engine, and the car can still start and drive normally, but it will accelerate the wear of the internal gears in the transmission. Definition of P Gear: In fact, the P gear is equivalent to the function of N (Neutral) plus the handbrake. It can replace the vehicle's braking system when the handbrake fails, preventing the car from rolling. Avoid Using P Gear in Non-Emergency Situations: Of course, you should not use the P gear for braking in non-emergency situations at high speeds, as it can cause significant impact on the transmission. An accident might deform the parking pawl and gear due to high-speed collision, and the pawl could even break. The broken pieces moving inside the transmission can cause irreversible damage or even render it completely unusable.
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DeEmily
08/11/25 9:35pm
I've been driving for over twenty years and once accidentally shifted into P while driving at high speed – it was truly terrifying. The car jerked violently with loud grinding noises from the transmission, nearly causing a loss of control. The mechanic later explained that the parking pawl forcibly engaged the wheels, causing gear slippage and severe wear, costing over 8,000 RMB in repairs. He clarified that shifting to P while moving interrupts power delivery, increasing accident risks – especially rear-end collisions. Since then, I've made it a habit to stay focused and avoid adjusting gears while driving, particularly preventing family members from touching the shifter. Regular transmission fluid checks help prevent issues, but if it happens, pull over immediately – never drive to the shop for inspection. Safety first.
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