A control unit (30) for a hybrid vehicle (10) is provided. The hybrid vehicle (10) includes an engine (16) and a motor (14) and is configured to be switched between a motor driving mode in which the vehicle (10) is driven by the motor (14), an engine driving mode in which the vehicle (10) is driven by the engine (16) and a hybrid driving mode in which the hybrid vehicle (10) is driven by both of the motor (14) and the engine (16). The control unit (30) includes a required output determination device (28B) that determines a required output based on an output characteristic in which an operation amount of an accelerator pedal (24) and a drive output corresponding to the operation amount are related to each other. The output characteristic in the motor driving mode is such that an increase rate of the drive output is decreased as the operation amount is increased.