A manual transmission, also known as a stick shift, is a type of vehicle transmission that requires the driver to manually change gears using a clutch pedal and gear stick. This system allows for greater control over the vehicle's power and speed, making it popular among driving enthusiasts. In a manual transmission vehicle, the driver must engage the clutch to disconnect the engine from the wheels before shifting gears. This process can enhance fuel efficiency and performance, but it requires more skill and attention compared to an automatic transmission, where gear changes happen automatically.