Quite simply, the overdrive gear rotates quicker as opposed to engine speed. So, it provides greater velocity and far better performance given that the engine operates in a decrease rpm in relation towards the vehicle pace. For most automobiles, There are 2 major different types of gearboxes: handbook and computerized. https://holdenegeby.vblogetin.com/39870804/5-simple-statements-about-automobile-gearbox-explained