Abstract: An electromechanical vehicle steering system comprising a housing, an electric motor having an axis of rotation, and a drop arm. The drop arm is axially movable in the direction of a longitudinal axis and the longitudinal axis extends in parallel with the axis of rotation of the electric motor. A gearbox couples the electric motor to the drop arm to translate a rotational movement of the electric motor into a linear movement of the drop arm. The gearbox comprises a toothed belt drive and a ball screw drive. A ball screw nut of the ball screw drive is in engagement with the drop arm and supports the drop arm. A toothed belt is tensioned by the adjustable bearing. The drop arm is also supported in the housing by a guide bush. The position of the guide bush can be adjusted in the housing radially to the drop arm.