An electric machine for driving a motor vehicle, having a stator and a rotor, rotatably mounted relative to the stator. The stator or the rotor is equipped with a winding receptacle region having a plurality of radially extending longitudinal slots distributed in a circumferential direction. Each longitudinal slot has with an opening toward one radial side, the width of which opening is delimited by two ends of two tabs directed toward each other in the circumferential direction, wherein each longitudinal slot has, between a chamber region receiving a plurality of conductors and the two tabs, at least one shoulder reducing a width of the chamber region, the conductors being supported in a radial direction on the at least one shoulder.