Should You Shift to Neutral at Red Lights in an Automatic Transmission Car?

[LukasRose]

When waiting at a red light in an automatic transmission car, it is strongly recommended to shift to neutral. This not only reduces wear and tear on the vehicle and lowers fuel consumption but also minimizes repair costs under extreme conditions. When the car is in Drive (D) gear, it tends to creep forward slowly, requiring the driver to press the brake pedal to prevent movement. Prolonged use of this method will inevitably shorten the lifespan of the brake pads. Below is an introduction to the relevant gear positions: 1. P (Parking) - Parking Gear, Start Gear: Used when the vehicle is parked and not in use. In this position, the wheels are mechanically locked to prevent rolling. The vehicle must be completely stopped before shifting to P gear; otherwise, the mechanical parts of the automatic transmission may be damaged. 2. R (Reverse) - Reverse Gear: Used for reversing. Never force the gear into R while the vehicle is still moving, as this can severely damage the transmission. 3. N (Neutral) - Neutral Gear: Used for temporary stops (e.g., at a red light). This position indicates neutral. To prevent the vehicle from rolling on a slope, always apply the brake. 4. D (Drive) - Drive Gear: Used for normal driving on regular roads. 5. S (Sport) - Sport Mode: In this mode, gears can be freely switched, but the shift timing is delayed to maintain high engine RPM for a period, enhancing the car's power. However, this mode increases fuel consumption.

[LaOmar]

As someone who has been driving for years, I don't think it's necessary to shift to neutral at red lights. Modern automatic transmissions are well-designed when in Drive (D) with the brake pedal pressed—the engine idling won't cause extra fuel consumption or damage components. Frequent shifting to Neutral (N) increases wear on the drivetrain, especially during short red lights where repeated gear engagement can accelerate wear. Safety-wise, staying in Drive with the brake applied is more secure; if the brakes fail, the car is less likely to roll. For fuel efficiency, newer models have smart systems that reduce fuel supply when stopped, making the minimal savings from shifting to neutral negligible. If your car has an auto-hold function, use it—it's both convenient and safe. For short red lights, don't bother shifting; for longer stops (over a minute), consider neutral to rest your foot, but always prioritize the vehicle manual's recommendations. In short, driving should be simple and efficient—don't sacrifice the overall experience for minor details.

[LaVictoria]

I usually drive to commute and never shift to neutral at red lights—it's too much hassle! Red lights typically last only a few dozen seconds. Switching back and forth between D and N gear is both mentally taxing and time-consuming, and it may even increase transmission wear, which isn't worth it. Safety is the top priority—keeping it in D gear while braking prevents unexpected vehicle movement, especially at sloped intersections. Fuel efficiency isn't a big concern either, as modern engines intelligently manage fuel consumption when idling; the savings from shifting to neutral are minimal. I remember once accidentally shifting to N gear, and when I released the brake, the car rolled, nearly causing a rear-end collision—a lesson learned. Nowadays, with Auto Hold, one button solves everything. I recommend forming the habit of staying in D gear to reduce extra operations and stay focused on the road. Proper car maintenance saves more money and hassle than these small actions. Driving should be relaxed and effortless.

[SimonRose]

Having observed cars for decades, I believe shifting to neutral at red lights is an outdated habit. Older vehicles might benefit, but modern automatic transmissions are perfectly fine staying in Drive (D) when stationary. Shifting to Neutral (N) could actually harm transmission components, especially with frequent gear changes during short red lights increasing wear. Safety and convenience should be prioritized: keeping in D with brakes pressed prevents rollaway accidents and reduces foot fatigue. The fuel-saving effect is negligible as engine designs have been optimized. Reserve neutral only for prolonged stops like railroad crossings. Always consult your owner's manual and respect modern automotive technology.

[LaLeah]

When I first started driving, I also struggled with this issue. Later, my instructor emphasized safety first. For automatic transmission cars at a red light, you should keep it in D gear and step on the brake. This prevents the car from accidentally rolling and avoids the risk of accidents. If you shift to neutral and release your foot, the car might move, especially at uphill intersections where accidents are more likely. Don't worry too much about fuel efficiency—new cars consume very little fuel when idling. Frequent gear changes increase the chance of operational errors, which isn't friendly for beginners. If your car has an auto-hold feature, enable it—it automatically locks the brakes, making it very convenient. Develop the habit of driving simply: don't change gears at red lights, and accelerate directly when the light turns green. Maintaining your vehicle is much more reliable than obsessing over fuel savings.