Parking (P) or Neutral (N) for Warming Up the Car?

[Elijah]

There are different scenarios for warming up the car in Parking (P) or Neutral (N) gear. If you plan to reverse first, warm up the car in P gear. If you intend to drive forward directly, warm up the car in N gear. Starting the engine in N gear avoids the impact on the transmission caused by P gear unlocking, because starting in P gear requires passing through R (Reverse) gear, while N gear directly shifts to D (Drive) for takeoff. Thus, the unlocking of P gear's locking mechanism is the first impact on the transmission, and shifting to R gear is the second impact, whereas N gear allows direct transition to D gear. Automatic transmission typically refers to the car's automatic gear-shifting mechanism, where the control system of the automatic transmission selects the appropriate gear based on the engine's speed and load during driving, replacing the driver's subjective judgment and gear-shifting operations.