Motor vehicle brake, in particular motor vehicle brake which can be actuated hydraulically and electromechanically in a combined manner, with an actuator assembly comprising: - a housing , - an actuator which can be moved relative to the housing for the hydraulic or electromechanical movement of a brake lining, - a motorized drive which has an electric motor (EM), - a movement mechanism which is arranged between the motorized drive and the movable actuator , - a transmission arrangement which is assigned to the movement mechanism, and - a separate self-locking apparatus (SHV) which is configured to block the movement mechanism if required, the movement mechanism having a ball screw drive with a spindle and a nut , it being possible selectively for the one component of spindle and nut to be driven rotationally and for the respective other component of spindle and nut to be moved in a linear manner within the housing for the movement of the actuator by way of rotational driving of one component of spindle and nut , characterized in that the transmission arrangement has three transmission stages (GS1, GS2, GS3) and a planetary transmission mechanism , an output shaft of the electric motor (EM) having a sun gear of the planetary transmission mechanism , an internal gear of the planetary transmission mechanism being arranged fixedly on the housing, and planetary gears of the planetary transmission mechanism being mounted rotatably on a planetary carrier which is mounted rotatably in the housing , and the self-locking apparatus (SHV) being arranged in or on the transmission arrangement in such a way that at least two transmission stages (GS2, GS3) are arranged between the ball screw drive and the self-locking apparatus (SHV). - a housing , - an actuator which can be moved relative to the housing for the hydraulic or electromechanical movement of a brake lining, - a motorized drive which has an electric motor (EM), - a movement mechanism which is arranged between the motorized drive and the movable actuator , - a transmission arrangement which is assigned to the movement mechanism, and - a separate self-locking apparatus (SHV) which is configured to block the movement mechanism if required, the movement mechanism having a ball screw drive with a spindle and a nut , it being possible selectively for the one component of spindle and nut to be driven rotationally and for the respective other component of spindle and nut to be moved in a linear manner within the housing for the movement of the actuator by way of rotational driving of one component of spindle and nut , characterized in that the transmission arrangement has three transmission stages (GS1, GS2, GS3) and a planetary transmission mechanism , an output shaft of the electric motor (EM) having a sun gear of the planetary transmission mechanism , an internal gear of the planetary transmission mechanism being arranged fixedly on the housing, and planetary gears of the planetary transmission mechanism being mounted rotatably on a planetary carrier which is mounted rotatably in the housing , and the self-locking apparatus (SHV) being arranged in or on the transmission arrangement in such a way that at least two transmission stages (GS2, GS3) are arranged between the ball screw drive and the self-locking apparatus (SHV). <EOS>