Hey everyone. I'm always confused with the numbers of gears in transmissions. Some cars have 3 gears (Chaparrals), 4 gears (older muscle cars), 5 gears (sports cars), 6 gears (Modern muscle cars, sports cars, Supercars), 7 gears (Hypercar territory), and 8 gears (Lexus IS F). I understand that some of these cars were built with automatic transmissions (Chaparrals and the 8 speed ISF), but I want to know why did the manufacturer choose the numbers of gears? Also, why do we (sometimes) have the option of choosing a 5 or 6 speed close ratio gearbox for a few cars?