
You cannot shift from D to N while driving. If you shift the gear from D to N while the car is in motion, the high-speed rotating passive components will not receive sufficient lubrication. This is also the reason why automatic transmission vehicles are not allowed to be towed over long distances. Coasting in neutral is strictly prohibited for automatic transmission vehicles. The gear should only be shifted to N when the vehicle comes to a complete stop. The differences between N and D gears are as follows: Different uses: The N gear is used for temporary parking; the D gear is used when the car is moving forward and can automatically select gears. Different applications: The N gear is suitable for both manual and automatic transmissions; the D gear is suitable for automatic transmissions.

I once tried shifting directly from D to N while driving an automatic transmission car on the highway, thinking coasting would save some fuel. That experience taught me a hard lesson: the car suddenly decelerated with forward momentum, braking effectiveness weakened, and I almost rear-ended another vehicle. Automatic transmissions rely on oil lubrication during operation. Shifting to neutral while driving slows down the oil pump, causing internal gears to grind dry for prolonged periods and accelerating wear. Veteran drivers always remind me - unless towing or emergency stopping, never do this. Just stay in D gear during normal driving for both safety and vehicle protection. Regularly checking transmission fluid levels during maintenance is also crucial for prevention.

From a technical perspective, it is possible to shift an automatic transmission vehicle into Neutral (N) while driving—just push the button or lever. However, this can lead to issues: transmission fluid circulates more slowly in Neutral, potentially causing component overheating and shortened lifespan. I've seen a friend spend thousands on major repairs due to this. While coasting might save a tiny bit of fuel, the risks far outweigh the benefits—brakes become stiffer when the engine is disconnected, especially dangerous on downhill slopes. I always recommend checking the vehicle manual; most manufacturers emphasize shifting only at low speeds or when stationary to avoid long-term damage. Developing good habits ensures your car remains durable for years.

Safety first, don't shift gears casually while driving. I once tried coasting in N gear, and the vehicle instantly lost traction, with unstable steering and braking, especially prone to loss of control in rain or snow. The mechanism of an automatic transmission relies on electronic control to match speed, and improper shifting can cause internal component wear or error codes. I'm used to keeping it in D gear while driving and shifting to N when parked for a break, which is both relaxed and reassuring. Pay more attention to road conditions during daily driving, as transmission issues often stem from minor neglects.


