A driveshaft is a mechanical component that transmits power from the engine to the wheels of a vehicle. It is typically a long, cylindrical shaft that connects the transmission to the differential, allowing the vehicle to move. Driveshafts are essential in both front-wheel and rear-wheel drive systems, as they help convert the engine's rotational energy into motion. Driveshafts can be made from various materials, including steel and aluminum, to balance strength and weight. They often include universal joints, which allow for flexibility and movement as the vehicle navigates uneven surfaces. Proper maintenance of the driveshaft is crucial for vehicle performance and safety.