Abstract: A system for controlling a supply of driving power to an automotive vehicle having driving wheels and an internal combustion engine includes a supercharger, which is capable of maintaining a supercharging pressure, for charging intake air into the internal combustion engine, and an automatic transmission having a shifting characteristic including a down-shifting zone with a specified width. The automatic transmission is capable of shifting among gear stages and transmitting driving power generated by the internal combustion engine to the driving wheels. A first adjustment device controls the supercharging pressure of the supercharger to converge on a target supercharging pressure. A second adjustment device causes the automatic transmission to shift from one gear stage to another gear stage. A detection device determines an acceleration requirement level by detecting an opening angle of an accelerator pedal.