Should an automatic transmission car start in P gear or N gear?
2 Answers
An automatic transmission car should start in P gear. Some car owners first shift from the original P gear position directly to N gear, then start the engine, and then shift to D gear before releasing the throttle to drive. The advantage of this method is that it avoids passing through R gear when shifting directly from P gear to D gear, reducing some impact force. However, some people believe that starting directly in P gear is safer, as starting in N gear may pose certain risks, especially the phenomenon of rolling. In fact, starting in P gear, even if there is some impact force when passing through R gear, the impact force is not very significant. Moreover, most car computer systems default to requiring the car to be in P gear to start, so it is recommended to start in P gear for greater safety.
I have been driving automatic transmission cars for many years, and it is essential to shift into P (Park) gear when starting the engine—never use N (Neutral) gear. P gear is the parking gear that locks the wheels, preventing the car from accidentally sliding or losing control during startup, especially on slopes where the risk is higher. Some people think the engine can also be started in N gear, which is theoretically possible but neither safe nor standard practice. Vehicle designs include a protection mechanism in the ignition system, ensuring smooth power supply only when in P gear to avoid damaging transmission components. Develop a good habit: step on the brake first, confirm the gear is in P, then turn the key to start—this ensures safety and prolongs the car's lifespan. Never follow misleading online advice to try starting in N gear, as it may cause accidents, mechanical failures, or increase repair costs.
