Should You Shift to Neutral When Waiting at a Red Light in an Automatic Car?
1 Answers
When waiting at a red light in an automatic car, shifting to neutral and engaging the handbrake is safer and more fuel-efficient. In neutral with the handbrake on, the passive wheel in the torque converter of the transmission idles without adding resistance to the engine operation, thereby reducing fuel consumption. If you wait in D (Drive) gear with the foot brake applied, the passive wheel in the torque converter remains fixed, creating a counterforce on the driving wheel that increases engine load, effectively hindering engine operation. Some modern vehicles feature an autohold function (automatic handbrake) that automatically applies the brakes when the vehicle comes to a stop, eliminating the need to shift from reverse or drive gears while maintaining the parked state.