Should You Shift Gear or Release the Handbrake First in an Automatic Transmission?

[OEmmett]

Automatic and manual transmissions follow the same starting sequence: you should shift into gear first and then release the handbrake. The primary reason for this is safety, as shifting into gear connects the power transmission path in the gearbox. When you first shift into gear, the transmission is in first gear, where the torque is at its highest. If the brake isn't properly engaged, the vehicle could suddenly lurch forward. Automatic transmissions can be categorized into CVT, AT, and dual-clutch types. CVT and AT transmissions use a torque converter to transfer engine power to the gearbox, while dual-clutch transmissions rely on friction plates similar to manual transmissions to transmit power.