How long can you hold the brake in D gear?

[JayceRose]

It's best not to exceed one minute. If waiting at a red light, it's better to shift to N gear. For automatic transmission vehicles, keeping the car in D gear while holding the brake for an extended period can lead to increased fuel consumption on one hand, and on the other hand, it can cause the transmission fluid temperature to rise, thereby shortening the transmission fluid replacement cycle. When the transmission is in D gear: The gears inside the automatic transmission are generally engaged in first gear and are connected to the wheels as one unit. However, since the brake is pressed and the wheels are stationary, these gears also remain motionless. At this time, the engine is running normally while the transmission is stationary, so all the engine's power is applied to the torque converter. The torque converter's impeller rotates at high speed with the engine, while the turbine remains stationary, placing both in a state of complete slippage. All the engine's power is used to drive the flow of fluid inside the torque converter. Dual-clutch transmission: When in D gear with the brake pressed, both clutches are disengaged, completely cutting off the power between the engine and the transmission. This operation has no adverse effect on the car.