An object is to improve fuel consumption efficiency. Accordingly, a fuel gradual addition delay time when starting (engine water temperature) TMKSTDLYT which changes in a decreasing trend with an increase in the engine water temperature is set (step S10). A fuel gradual addition delay time when starting (state of charge)TMKSTDLYQ which changes in an increasing trend with an increase in the state of charge QBAT is set (step S12 and S14). A fuel gradual addition delay time when starting (vehicle speed) TMKSTDLYV which changes in a decreasing trend with an increase in vehicle speed VP is set (step S13 and S15). Then the greatest value of; the fuel gradual addition delay time when starting (engine water temperature)TMKSTDLYT, the fuel gradual addition delay time when starting (state of charge)TMKSTDLYQ, and the fuel gradual addition delay time when starting (vehicle speed) TMKSTDLYV is set as a fuel gradual addition delay time when starting TMKSTDLY (step S16).