A manual gearbox is a type of transmission system used in vehicles that allows the driver to change gears manually. This system typically consists of a gear stick and a clutch pedal, enabling the driver to select different gear ratios for optimal performance and fuel efficiency. In a manual gearbox, the driver must engage the clutch to disconnect the engine from the wheels before shifting gears. This process gives the driver more control over the vehicle's power and speed, making it a popular choice among driving enthusiasts who enjoy a more hands-on driving experience.