Power Train for a Motor Vehicle

A power train () for a motor vehicle () includes an electric machine () and a transmission () with at least one first planetary gear set (P) that includes gear set elements with a sun gear (P), a planet carrier (P) and a ring gear (P). The electric machine () includes a rotor (), which transmits drive power via a rotor shaft () at least indirectly onto one of the gear set elements in the first planetary gear set (P). The rotor shaft () is connected via a spline () to a first gear set element in the first planetary gear set (P) for conjoint rotation.