1. Loss of Engine Braking: When you shift into neutral while driving, the engine's connection to the wheels is disconnected. This means the engine braking effect, which helps slow the car down, is lost. You may have to rely solely on the brakes, which can cause them to overheat and wear out more quickly.
2. Over-Revving: If you shift into neutral while the car is still in motion and then shift back into gear at a higher speed, the engine may over-rev and potentially cause damage to the engine or transmission.
3. Transmission Wear: Shifting between neutral and drive while the car is moving puts stress on the transmission components, including the clutches and bands. This can cause premature wear and even lead to transmission failure.
4. Risk of Accidents: Shifting into neutral while driving can lead to a sudden change in the car's behavior, such as a loss of engine braking or a change in engine speed. This can be disconcerting and may distract the driver, increasing the risk of accidents.
5. Legal Implications: In some jurisdictions, it may be illegal to operate a car with neutral gear engaged while driving.
Instead of engaging neutral gear while driving an automatic car, it's best to use the designated gears (P) Park, (R) Reverse, (N) Neutral, (D) Drive, and (L) Low, or other relevant gears as needed, to control the car's movement. If you're unsure about the proper use of gears, it's always a good idea to consult the vehicle's owner's manual.
