Control system of vehicle

A control system of a vehicle that has a driving force source including at least a rotating machine, and a transmission provided on a power transmission path between the driving force source and drive wheels, the transmission including a plurality of engagement devices and operable to be shifted to a plurality of gear positions when engagement states of the engagement devices are switched, the vehicle being operable in a manual driving mode in which the vehicle travels based on driving operation of a driver, and an automatic driving mode in which driving of the vehicle is performed without depending on the driving operation of the driver, the control system comprising:

• an auto-driving oil pressure changing unit that makes an oil pressure of hydraulic oil supplied to one of the engagement devices that is released during a downshift of the transmission while the vehicle is traveling in the automatic driving mode, and during an inertia phase of the downshift of the transmission, higher than that set during traveling in the manual driving mode;
• and
• an auto-driving rotating machine controller that makes drive-side torque generated from the rotating machine in the automatic driving mode, and during the inertia phase of the downshift of the transmission, larger than torque generated during traveling in the manual driving mode, while the oil pressure of the hydraulic oil of the one of the engagement devices is made higher than that set during traveling in the manual driving mode, wherein
• the auto-driving rotating machine controller controls the torque of the rotating machine such that an input rotational speed of the transmission during the inertia phase of the downshift of the transmission increases at substantially the same rate as that during traveling in the manual driving mode, and the rotating machine is a motor generator.