Can You Shift to Neutral While Driving an Automatic Car?
2 Answers
You should not shift to neutral while driving an automatic car, as it can cause insufficient lubrication and damage to the transmission. Precautions for driving an automatic car include: 1. Automatic cars have protective and interlock functions for dangerous actions. You can freely switch between D and N gears, but switching from D to R or P incorrectly can be hazardous; 2. When parked on a steep slope where gravity exceeds the idle power, the car may roll backward, so you should use the handbrake when starting; 3. Prolonged coasting in neutral can lead to insufficient oil pressure in the hydraulic lines of the automatic transmission, increasing friction, reducing lubrication, and damaging the internal friction plates; 4. When parking or idling for an extended period, first press the brake, shift to N, engage the handbrake, release the brake pedal, and shift to P after the car comes to a complete stop.
I've driven automatic transmission cars for over 20 years and noticed many people think shifting to neutral while driving saves fuel. But honestly, this habit is extremely dangerous. I remember once on a highway downhill section, out of curiosity I tried it - the car suddenly accelerated uncontrollably and nearly hit the guardrail. Later, a mechanic explained that shifting to neutral while driving disconnects the engine from transmission, stopping the lubrication pump operation which increases internal wear and makes repairs expensive. Moreover, without engine braking, the brakes bear heavier load, potentially increasing fuel consumption instead. I recommend only shifting to neutral when completely stopped (like at red lights), otherwise just stay in Drive (D) mode - it's safer and more worry-free. After adopting this habit, my car's transmission has lasted much longer, giving me peace of mind even on long trips.
