A car’s drive shaft (or propeller shaft) transmits engine torque from the transmission to the differential, transferring rotational power directly to the wheels to make the vehicle move.A drive shaft performs four main functions to keep your vehicle running smoothly:Power Transfer: It serves as the vital mechanical link that delivers rotational energy and torque from the engine/transmission to the drive axles.Accommodating Suspension Movement: Using Constant Velocity (CV) or Universal joints (U-joints), it flexes and telescopes to maintain power transfer while your wheels move up and down over uneven roads.