This transmission has 4 forward gears and 1 reverse gear. Let's summarize the equipment ratios, inputs and outputs: The automobile gearbox or transmission are labeled as: handbook transmission, automatic transmission. A compound planetary gearset acts like two planetary gearsets merged. Learn about compound planetary gearsets and an automatic transmissions structure. https://louiszeebx.blogthisbiz.com/40984739/5-simple-statements-about-gearbox-auto-explained