A vehicular power-transmission control system transmits the rotational
driving forces of an engine E and an electrical motor generator M through
a continuously variable transmission CVT to wheels by controlling the
speed change ratio of the continuously variable transmission CVT in
correspondence to the operational condition of the vehicle. Additionally,
the control system corrects the speed change ratio of the transmission in
correspondence to the difference between the actual output of the
electrical motor generator and the requested output of the electrical
motor generator that is set correspondingly to the speed of the vehicle.