Offers torque: It multiplies the engine's torque output to offer additional ability on the wheels, enabling the automobile to generate by means of steep inclines. Change gear ratio: The gearbox changes equipment ratio to match driving conditions. It lets the motive force to manually change the equipment ratio as per https://marioceccd.blogoscience.com/40051142/how-gearbox-auto-can-save-you-time-stress-and-money