A vehicle comprising: a) a first electric storage device configured to supply an electric power to an electric rotating machine that is a drive source, wherein the drive source includes an internal combustion engine; b) a second electric storage device configured to supply an electric power to an electric component different from the electric rotating machine and has a lower voltage than the first electric storage device; c) a converter configured to adjust a voltage of the electric power supplied from the first electric storage device and further configured to supply the voltage-adjusted electric power at least to the second electric storage device; and d) a control unit configured to control the converter such that the voltage of the electric power supplied from the first electric storage device to the second electric storage device becomes equal to a target voltage, characterized in that, e) the control unit is configured to set the target voltage to a first voltage (VB2) when a system stop period from a last stop time point when a system of the vehicle is stopped to an activation time point when the system of the vehicle is activated and is longer than a first period (α), and when an elapsed time from the activation time point is equal to or shorter than a second period (β); f) the control unit is configured to set the target voltage to a second voltage (VB2), which is lower than the first voltage (VB2), when the system stop period is longer than the first period (α) and when the elapsed time from the activation time point is longer than the second period (β); and g) the control unit is configured to set the target voltage to the second voltage (VB2) after completion of preheating of an air-fuel ratio sensor that is provided in the internal combustion engine, when the system stop period is equal to or shorter than the first period (α). a) a first electric storage device configured to supply an electric power to an electric rotating machine that is a drive source, wherein the drive source includes an internal combustion engine; b) a second electric storage device configured to supply an electric power to an electric component different from the electric rotating machine and has a lower voltage than the first electric storage device; c) a converter configured to adjust a voltage of the electric power supplied from the first electric storage device and further configured to supply the voltage-adjusted electric power at least to the second electric storage device; and d) a control unit configured to control the converter such that the voltage of the electric power supplied from the first electric storage device to the second electric storage device becomes equal to a target voltage, characterized in that, e) the control unit is configured to set the target voltage to a first voltage (VB2) when a system stop period from a last stop time point when a system of the vehicle is stopped to an activation time point when the system of the vehicle is activated and is longer than a first period (α), and when an elapsed time from the activation time point is equal to or shorter than a second period (β); f) the control unit is configured to set the target voltage to a second voltage (VB2), which is lower than the first voltage (VB2), when the system stop period is longer than the first period (α) and when the elapsed time from the activation time point is longer than the second period (β); and g) the control unit is configured to set the target voltage to the second voltage (VB2) after completion of preheating of an air-fuel ratio sensor that is provided in the internal combustion engine, when the system stop period is equal to or shorter than the first period (α).