
It is not advisable to shift into neutral while driving an automatic transmission vehicle for the following reasons: 1. Rear-end collision: Shifting into neutral while driving reduces the braking force of the vehicle, increasing the risk of rear-end collisions. When the vehicle is in neutral and coasting, the connection between the engine and the drive wheels is lost, and the car moves forward solely by inertia. In case of an emergency requiring braking, all braking force must be provided by the brakes alone. 2. Transmission wear: Shifting into neutral disrupts the connection between the engine and the wheels, leading to insufficient oil pressure in the automatic transmission's hydraulic system. This prevents proper lubrication of the transmission, causing internal temperatures to rise and increasing friction. Over time, this can lead to premature aging of the transmission components.

I never shift into neutral while driving because it's too dangerous. Last time on the highway, my friend tried shifting into neutral, and the car instantly started coasting out of control, almost running off the shoulder. Modern automatic transmissions are designed for safety—keeping it in Drive (D) allows the engine to help control your speed, especially when going downhill. If you shift gears while moving, it's like letting go of a safety rope, making the car prone to skidding or stalling. It's even worse in rain or snow, where a small mistake can cause an accident. Many people think shifting to neutral saves fuel, but that's a misconception—it actually increases consumption. Developing this habit means you won't react in time during emergencies. Safe driving comes first; don't gamble for momentary convenience.

As a car owner, I've learned my lesson the hard way—I really shouldn't shift into neutral while driving. After that mistaken operation, my transmission developed issues. The mechanic diagnosed it as excessive gear shifting while coasting, which to oil pump wear. The transmission requires stable lubrication, and when in neutral, the gears rotate but oil pressure is insufficient, making components prone to damage. Over time, this can lead to major repairs. I've also heard that some car models experience shortened transmission lifespans from prolonged use of this practice, resulting in high repair costs. Now, I only shift gears when waiting at traffic lights to protect my car. Driving isn't child's play; taking care of mechanical structures can save a lot of money and trouble.

I think it's fine to shift into neutral when stopping at a red light in the city, but I never do it while driving. If you switch to neutral at highway speeds or above 60 km/h, the car will suddenly jerk and become difficult to control. Once, I accidentally bumped the gear lever into neutral, and the car lurched forward, which really scared me. After that, I memorized the gear positions to prevent accidental shifts. Some people are used to coasting in neutral on gentle slopes, but it doesn’t save fuel and is actually dangerous—it even puts more load on the engine. As a daily commuter, I recommend staying in Drive (D) mode and letting the system automatically adjust for a worry-free and safer drive.

Regarding whether shifting to neutral saves fuel, I'd like to share my perspective. When driving an automatic transmission car, I've tested that coasting in neutral doesn't save fuel—it actually increases consumption because the engine still consumes fuel to maintain idle. Shifting gears while moving is worse, potentially causing system instability and additional fuel consumption. I don't think this is a good habit and it might even harm the car's performance. In city driving, shifting to neutral at red lights is acceptable, but changing gears while moving is too risky. If you really want to save energy, regular vehicle and proper tire pressure are much more effective than randomly shifting gears.

When I was young and drove an automatic car for the first time, out of ignorance, I shifted into neutral while driving, causing the car to lose control and nearly scrape against a wall. That scare is something I'll never forget. Since then, I've completely changed my habit and only shift gears when the car is parked. Driving is no joke; a single wrong move can lead to disaster. Talking with friends, I found many have had similar experiences. The lesson is that the engine cannot assist with braking in neutral, making accidents more likely. Now, I always check the gear position to ensure safe driving. Everyone starts as a beginner, and understanding these details is crucial.


