What is the best gear to leave the car in when idling for a long time?
2 Answers
When idling for a long time, manual transmission cars can be shifted into neutral (N) with the handbrake engaged, while automatic transmission vehicles can either be shifted into neutral (N) or park (P) with the handbrake firmly applied. Below is additional information about car gear selection: 1. Automatic transmission vehicles have both P (Park) and N (Neutral) gears, both of which can be used when parking, but they serve different purposes. 2. The P gear includes a locking mechanism, whereas the N gear does not. When shifted into P, the locking mechanism inside the transmission locks the gear, effectively securing the wheels. In this position, even without engaging the handbrake, the car will not roll. In contrast, shifting into N does not lock the transmission gear, meaning the car could roll if the handbrake is not applied. 3. For short stops like waiting at a red light without turning off the engine, using N gear is appropriate. However, when parking and turning off the engine, shifting into P gear is mandatory. Some vehicles will not allow the key to be removed unless shifted into P after turning off the engine, while others require shifting into P before the engine can be turned off—this is a safety feature. It is advisable not to shift into P while waiting at a red light. If the car is rear-ended while in P, the transmission could be damaged. Always ensure the car is completely stationary before shifting into P.
As a veteran driver with decades of experience, I believe keeping the engine running in neutral (N) gear for extended periods is the most cost-effective approach. Here's why: When in N gear, the transmission isn't under load - the engine just idles to power things like AC, saving fuel without straining the vehicle. I routinely do this during long red lights or parked conversations - super convenient. Just remember to firmly engage the parking brake to prevent rolling, especially on slopes. Using D or R gear is worse as it puts force on the wheels and accelerates transmission wear. Ensure proper engine cooling with regular coolant checks to maintain AC efficiency by preventing overheating. Safety first - neutral gear is key.
