
Putting a car in neutral gear means that the transmission lever is not engaged in any forward or reverse gear position, completely disconnecting the transmission from the drive wheels. For manual transmissions, the neutral position is in the middle, while for automatic transmissions, it is marked with an "N". When the gear lever is placed in neutral, the drive wheels lose their driving force, and the connection between the engine and the drive wheels is severed. The car then relies on its own inertia to coast forward, which is known as coasting in neutral. Below is relevant information: Hazards of coasting in neutral: Car engines are electronically controlled and automatically cut off fuel when decelerating in gear. However, if the car is coasting in neutral, the engine will not cut off fuel, maintaining higher RPMs and leading to increased fuel consumption. Additionally, coasting in neutral prevents engine braking, causing the car to speed up and reducing braking effectiveness, thereby increasing driving risks. Automatic transmission cars should not coast in neutral: This is because automatic transmissions consist of hydraulic control systems and planetary gear sets. Coasting in neutral can cause the engine speed to exceed the vehicle speed, leading to insufficient oil pressure in the hydraulic lines. This increases friction, reduces lubrication, may cause wheel lock-up, and can damage the transmission.

Having driven a taxi for over 20 years, I'm extremely familiar with neutral gear. Shifting to neutral disconnects the transmission from the engine - when you press the accelerator, the engine revs but the car won't move. The most common use is shifting to neutral and pulling the handbrake at red lights, which relieves your right foot from constantly pressing the brake pedal. However, never coast downhill in neutral - modern cars with electronic fuel injection systems actually save more fuel when coasting in gear. Neutral coasting is not only dangerous but also consumes more fuel. I remember when I first started driving and didn't know better - I coasted downhill in neutral and burned out the brake pads. That's a lesson worth remembering.

Last time I accompanied my husband to get the car repaired, the mechanic explained the neutral gear principle in detail. Simply put, when you shift to N (Neutral) gear, the driving gear and driven gear in the transmission separate, preventing engine power from reaching the wheels. This design is primarily used for temporary parking or when being towed, to avoid locking the drive wheels. However, the mechanic repeatedly emphasized that for automatic transmission cars, there's no need to shift to neutral during short red light stops, as frequent gear shifting can actually harm the transmission. Nowadays, many cars with auto start-stop functions only require holding the brake pedal during brief stops, which is more convenient than shifting to neutral and also saves fuel.

During the driving test, the instructor specifically taught us about neutral gear operation. For manual transmissions, you must pass through neutral when shifting gears, and you need to press the clutch pedal to engage a gear. It's even simpler with automatic transmissions—just shift directly to the N position. The most common mistake beginners make is shifting to neutral while driving, which is not only dangerous but also harmful to the car. I remember practicing at an intersection and shifting to neutral, only to forget to press the brake, nearly causing the car to roll and rear-end another vehicle. The instructor was so anxious that he immediately pulled the handbrake. Since then, I've developed the habit of always engaging the handbrake when in neutral—it's safer and more secure.


