A motor system includes a drive motor configured to generate a drive force using power supplied from a fuel cell; an idle control unit configured to operate the fuel cell intermittently between an idle operation mode and an idle stop mode; a state detection unit configured to detect a state of the fuel cell when the idle stop mode of the fuel cell ends; a recovery time estimation unit configured to estimate a recovery time taken for total voltage of the fuel cell to reach voltage at the idle operation based on the state of the fuel cell detected by the state detection unit; and a control unit configured to perform a correction control for torque of the drive motor based on the recovery time estimated by the recovery time estimation unit.