A motor vehicle includes an engine and an external setting unit configured to set an engine control amount. A control unit is configured to store a basic control map having a preset engine control amount contained therein. The control unit is also configured to communicate with the external setting unit. An engine setting system is configured to change the preset engine control amount by replacing the preset engine control amount with the engine control amount set by the external setting unit. The engine control amount set by the external setting unit is reflected in the basic control map. The engine control amount set by the external setting unit is reflected in the control map when a start preparing operation is detected.