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Does Forgetting to Shift to P Gear Before Turning Off an Automatic Transmission Car Have Any Impact?

3 Answers

Harper

07/29/25 1:50am

Forgetting to shift to P gear before turning off an automatic transmission car has no impact as long as the handbrake is properly engaged. Below is relevant information about automatic transmission cars: 1. Definition of Automatic Transmission: Automatic transmission refers to not needing to shift gears while driving, with its advantage over manual transmission being easier to operate. 2. Gears of Automatic Transmission: Generally, there are six gear positions on an automatic transmission car, from top to bottom: P, R, N, D, S, L. Automatic transmissions include continuously variable transmission (CVT), electronic paddle shifters, and electronic gear lever shifting. Vehicles on the market have three types of transmissions: manual transmission, automatic transmission, and semi-automatic transmission.

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CarterLynn

08/12/25 11:45am

As a seasoned driver with over a decade of experience, you must shift to P (Park) before turning off an automatic transmission car! The most obvious consequence of turning off the engine without shifting to P is that the steering wheel and key will be locked and immovable. More critically, it damages the mechanical locking pawl in the transmission—this component is designed to lock the transmission gears when in P. If you park on a slope relying solely on the P gear to hold the car, the locking mechanism bears excessive force and is prone to gear damage, leading to costly transmission repairs. Develop this habit: Brake to a complete stop → Shift to N (Neutral) → Engage the parking brake → Release the foot brake to ensure the car is fully stationary → Finally shift to P and turn off the engine. I've seen too many beginners turn off the engine directly from D (Drive), resulting in a loud clunk from the transmission that's heartbreaking to hear.

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JustinRose

10/02/25 3:08am

I used to make this mistake with automatic transmissions too. Nowadays, newer cars are quite smart - some models automatically shift back to P (Park) when turned off, but it can still cause hidden damage to the transmission. Two key points to note: First, occasionally forgetting on flat ground isn't a big issue, but on slopes it might cause the car to roll and lead to accidents. Second, frequently turning off without shifting to P can wear out the parking pawl mechanism, and repairing it requires dismantling the transmission which is particularly troublesome. Once I was in a hurry and turned off without shifting to P, and the next day the car got stuck in P and wouldn't move - calling a tow truck cost me several hundred dollars. I recommend developing a habit of checking the gear position when starting up - confirming with the small icon on the dashboard is the safest approach.

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