The invention relates to a hybrid transmission for a motor vehicle provided with a heat engine and an electric traction machine (4), comprising two concentric primary shafts (1, 3) respectively connected to the heat engine and to the electric machine, wherein the solid primary shaft (1) can be connected either to the hollow primary shaft (3) in a battery-recharging mode or during hybrid traction modes, or a gear wheel descent on a secondary shaft (19) connected to the wheels of the vehicle in hybrid or thermal traction modes, characterised in that in certain hybrid or electric traction modes, the torque of the electric machine (4) passes from the hollow primary shaft (3) to an intermediate transfer shaft (8), to an electrical gear selection shaft, from where it can be transmitted to the secondary shaft (19) on one of two selectable electric gears.