Can an automatic transmission car coast in neutral?

[DiMarcus]

An automatic transmission car should not coast in neutral. Here is an introduction to automatic transmissions: 1. Introduction: An automatic transmission typically refers to a car's automatic gear-shifting mechanism. While driving, the control system of the automatic transmission automatically selects the appropriate gear based on the engine's speed and load, replacing the driver's subjective judgment of timing and gear-shifting operations. A typical automatic transmission car has six gear positions, from top to bottom: P, R, N, D, S, L. The most commonly used automatic gear positions are Park (P), Reverse (R), Neutral (N), and Drive (D). 2. Starting: (1) It is best to wait a few seconds after the engine starts before moving the gear lever to the correct position, such as shifting to D for forward motion or R for reverse. (2) Next, release the handbrake first, then smoothly release the foot brake to utilize the creep phenomenon, allowing the vehicle to start slowly. (3) During the process of releasing the handbrake when starting, the brake pedal (foot brake) should still be pressed to prevent the car's engine speed from increasing and causing a sudden start.

[DeMatteo]

I've been driving automatic transmission cars for over twenty years. When I was younger, I thought coasting in neutral could save some fuel, but experience has taught me this habit is a bad idea. Automatic transmissions rely on the engine to drive the oil pump that lubricates internal components. In neutral, insufficient oil supply leads to dry friction between gears, and prolonged use accelerates wear, making a costly replacement of several thousand dollars not worth it. Safety is even more critical: in case of going downhill or needing sudden acceleration, shifting back to D gear causes delayed response, significantly increasing accident risks. I tried coasting a few times and felt the car was sluggish and hard to control, so I never did it again. I recommend regular checks of transmission fluid to maintain health and sticking to driving in D gear as designed for the safest option. Don't risk big trouble to save small money.

[LeHenry]

When driving a new automatic transmission model, I found coasting in neutral to be less than ideal. Modern cars have sophisticated electronic systems; using D gear downhill with engine braking and fuel cut-off actually saves more fuel. Coasting in neutral keeps the engine idling, consuming more fuel and increasing emissions, while also disrupting smart control and accelerating wear. Sensor misjudgments may briefly affect stability control systems. After consulting technical forums and maintenance apps, they emphasized that transmission oil only works effectively in the drive cycle, and lack of lubrication can damage parts, leading to expensive repairs. Now, I stick to coasting in D gear—smarter and safer. For more fun, I'm considering upgrading the driving mode.

[BrynleeFitz]

Strong safety awareness. I read that automatic transmissions should not coast in neutral. The key issue is transmission lubrication: in drive gear, the oil pump supplies sufficient oil, while coasting in neutral reduces oil film, risking component damage. Safety risk: In emergencies like obstacle avoidance, shifting back to D gear could cause a dangerous one-second delay. The 4S shop advised it may damage hydraulic valve bodies, leading to costly repairs. I always drive in D gear for better control and peace of mind. Regarding fuel economy, engine idling consumes more, so it's better to abandon unnecessary attempts. Develop good habits to avoid extra maintenance.

[VanAdelyn]

Understand automotive mechanics: In neutral, the transmission input shaft disengages but the oil pump isn't driven, leading to poor lubrication. Clutch bearings may experience dry friction, shortening lifespan. Internal slippage can damage components, with repairs costing thousands—far exceeding fuel savings. Overheated fluid may cause rough shifting. Neutral wasn't designed for driving and poses risks. Follow proper operation to maintain durability. Remember: Running without proper lubrication equals equipment destruction—don't risk it. Keep in Drive (D) to ensure lubrication and braking safety.

[JuniperFitz]

Commuting daily with an automatic transmission, I've been exploring fuel-saving techniques. The mechanic strongly advised against coasting in neutral, warning that insufficient lubrication of transmission oil could cause rapid internal wear, leading to costly repairs worth thousands. Attempting brief coasting felt unstable and increased brake burden, so I stopped. Now, I solely rely on engine braking in D gear—both safer and smoother. While fuel savings aren't significant, maintaining good long-term vehicle condition proves more economical. Regular maintenance and timely oil changes extend lifespan. Prioritize habits over minor gains; avoiding major risks is key.