Drive unit for a motor vehicle

Motor unit (10) for a vehicle comprising a thermal engine, a gearbox (200) coupled to the crankshaft of the thermal engine by means of a clutch, and an electric machine (100) equipped with a stator (110) and a rotor (120), disposed between the clutch and the input shaft of the gearbox, characterized in that the electric machine has a flange (111) rigidly fixed to the clutch housing (201) of the gearbox, and centered therein, so as to allow coaxial mounting of the gearbox and the electric machine.