A gearshift assembly for a transmission includes a shift lever which is mounted for pivotal movement in a select direction between a shifting gate for automatic mode and a shifting gate for manual mode. The gearshift assembly also includes a return mechanism including a push member, an electric motor mechanically acting on the shift lever through the push member, a driven member connected to the push member, a spring acting between the push member and the driven member, and a blocking element which can be actuated to move out of a blocking position in which the blocking element blocks the movement of the shift lever from the shifting gate for automatic mode to the shifting gate for manual mode. The return mechanism also includes a wheel drivable for rotation by the electric motor.