Should Automatic Transmission Cars Shift to Neutral at Red Lights?

[PatrickLee]

For longer red lights, you can choose to shift to neutral while waiting, which helps reduce fuel consumption and minimizes wear on the transmission. For shorter red lights, staying in drive (D) is acceptable. Below are some uses and tips regarding the neutral gear: 1. Temporary parking. When the vehicle needs to stop temporarily, such as waiting briefly for someone, shifting to neutral is suitable. For extended waiting periods, it's recommended to turn off the engine. 2. Towing. If the vehicle requires repairs or needs to be towed for other reasons, the gear must be shifted to neutral. 3. Starting and stopping. Using neutral during startup and temporary stops reduces wear on the car.

[AugustMarie]

Having driven for over 20 years, I'm quite qualified to talk about whether to shift to neutral at red lights. For long red lights, shifting to neutral does reduce strain on the transmission by preventing prolonged pressure in Drive mode. This helps the engine save fuel and minimizes unnecessary wear, which clearly benefits the vehicle's condition in the long run. I often do this myself, especially during traffic jams where red lights last several minutes - I've noticed a slight drop in fuel consumption after shifting to neutral. However, I don't recommend shifting gears at every red light, as frequent operation may wear transmission components or increase the risk of misoperation. For modern vehicles with auto start-stop systems where the engine shuts off automatically at red lights, shifting to neutral becomes redundant. Generally speaking, adjust flexibly based on traffic conditions: just brake for short red lights, while shifting to neutral makes more sense for long waits.

[McVincent]

As an automotive enthusiast, I pay close attention to automatic transmission design details. Shifting to neutral at red lights is technically optional, as most modern automatic transmissions are well-optimized—the torque converter allows idling in Drive (D) without significant fuel consumption. However, conventional wisdom suggests that shifting to neutral can save fuel, which I've verified: when stopped for over 30 seconds, shifting to neutral reduces engine load, with actual tests showing a 1-2% drop in fuel consumption. The issue lies in frequent gear shifts potentially stressing transmission components, especially in older models. I recommend consulting your vehicle manual or a mechanic—some cars advise using neutral to protect the system. Notably, the emerging trend is start-stop systems: if the engine automatically shuts off at red lights, shifting to neutral may reduce efficiency. My takeaway is to consider your car's age and traffic conditions—don't blindly follow trends.

[KevinAnn]

Safety first is my principle, and I don't recommend casually shifting to neutral when stopping at a red light in an automatic transmission car. Keeping the car in D gear while pressing the brake allows for instant response: in case of emergencies, such as a rear-end collision or sudden need to move, you can accelerate immediately to avoid accidents. Starting the moment the light turns green is crucial, whereas shifting from neutral requires gear change, and that slight delay can be risky in congested city traffic. I once experienced a close call where timely acceleration saved me from a collision. Of course, if you're fatigued from holding the brake during a long red light, you can briefly shift to neutral to rest, but always ensure the surroundings are safe first. Also, don't overlook active and passive safety features just to save a bit of fuel or protect the car. Remember, modern cars have protective mechanisms designed for D gear during short stops, making unnecessary shifts not worth the risk. Always weigh the risks against the benefits.

[StValerie]

From an energy-saving perspective, I strongly support shifting to neutral at red lights for automatic transmissions. Neutral gear allows the engine to shed partial load, reducing idle fuel consumption and emissions – each stop in city driving saves a bit of fuel, accumulating significant benefits for both the environment and your wallet. Through my regular fuel consumption tracking, I've measured approximately 0.5L/100km fuel savings when using neutral for red lights exceeding 30 seconds compared to keeping it in Drive. Relevant to this, forming this habit can delay transmission aging, especially reducing overheating issues during hot weather. However, frequency control is crucial: excessive gear shifting may increase transmission wear, offsetting fuel-saving benefits. Also consider traffic reality: skip short red lights and only operate for long ones. In summary, this small change makes a meaningful contribution to sustainable driving, which I practice daily.