Electric motor with a fastening arrangement (B'), in particular for fastening the electric motor to a seat, wherein the fastening arrangement (B') comprises - at least one motor fixing element (F1, F2) and - at least one motor locking element, wherein the at least one motor fixing element (F1, F2) and the motor locking element are arranged on an end face of the electric motor, wherein the at least one motor fixing element (F1, F2) is configured such that the electric motor can be adjusted into a rotational position, and the at least one motor locking element is configured such that the electric motor can be locked in a set rotational position, wherein the motor locking element is configured such that the electric motor can be fixed so as to be immovable in an axial direction and can be secured against twisting by means of a torque lock, wherein the at least one motor locking element has a polygonal profile, wherein the outer profile of the motor locking element has multiple surfaces which are distributed uniformly over the periphery and form the shape of a polygon, wherein the motor fixing element (F1, F2) extends outwardly in an axial direction starting from the motor locking element, and wherein the motor fixing element (F1, F2) allows a push-fit connection of the electric motor, and the outer profile of the motor locking element forms a torque lock. - at least one motor fixing element (F1, F2) and - at least one motor locking element, wherein the at least one motor fixing element (F1, F2) and the motor locking element are arranged on an end face of the electric motor, wherein the at least one motor fixing element (F1, F2) is configured such that the electric motor can be adjusted into a rotational position, and the at least one motor locking element is configured such that the electric motor can be locked in a set rotational position, wherein the motor locking element is configured such that the electric motor can be fixed so as to be immovable in an axial direction and can be secured against twisting by means of a torque lock, wherein the at least one motor locking element has a polygonal profile, wherein the outer profile of the motor locking element has multiple surfaces which are distributed uniformly over the periphery and form the shape of a polygon, wherein the motor fixing element (F1, F2) extends outwardly in an axial direction starting from the motor locking element, and wherein the motor fixing element (F1, F2) allows a push-fit connection of the electric motor, and the outer profile of the motor locking element forms a torque lock. wherein the at least one motor fixing element (F1, F2) is configured such that the electric motor can be adjusted into a rotational position, and the at least one motor locking element is configured such that the electric motor can be locked in a set rotational position, wherein the motor locking element is configured such that the electric motor can be fixed so as to be immovable in an axial direction and can be secured against twisting by means of a torque lock, wherein the at least one motor locking element has a polygonal profile, wherein the outer profile of the motor locking element has multiple surfaces which are distributed uniformly over the periphery and form the shape of a polygon, wherein the motor fixing element (F1, F2) extends outwardly in an axial direction starting from the motor locking element, and wherein the motor fixing element (F1, F2) allows a push-fit connection of the electric motor, and the outer profile of the motor locking element forms a torque lock.