A vehicle comprising: an engine; a driving wheel arranged to be driven by the engine; a clutch (44, 46) located between the engine and the driving wheel; a clutch actuator arranged to disengage and engage the clutch; an engine rotation speed sensor arranged to detect a rotation speed of the engine; a vehicle speed detection sensor arranged to detect a vehicle speed; a clutch actuator control device (70, 135) arranged and programmed to control the clutch actuator; a cruise control device arranged and programmed to perform control to maintain the vehicle speed at a prescribed vehicle speed by controlling an output of the engine while the clutch is engaged, and to cancel the control to maintain the vehicle speed at a prescribed vehicle speed when the clutch is disengaged; and characterized in that said vehicle further comprises: a determination device arranged to determine whether the cruise control device is performing the control to maintain the vehicle speed at the prescribed vehicle speed; wherein when the cruise control device is determined to not be performing the control to maintain the vehicle speed at a prescribed vehicle speed, the clutch actuator control device (70, 135) is adapted to perform control to disengage the clutch when a value of a parameter, which is either the rotation speed of the engine or the vehicle speed, becomes equal to or lower than a first threshold value; and when the cruise control device is determined to be performing the control to maintain the vehicle speed at a prescribed vehicle speed, the clutch actuator control device (70, 135) is adapted to perform the control to disengage the clutch when the value of the parameter becomes equal to or lower than a second threshold value, which is lower than the first threshold value. an engine; a driving wheel arranged to be driven by the engine; a clutch (44, 46) located between the engine and the driving wheel; a clutch actuator arranged to disengage and engage the clutch; an engine rotation speed sensor arranged to detect a rotation speed of the engine; a vehicle speed detection sensor arranged to detect a vehicle speed; a clutch actuator control device (70, 135) arranged and programmed to control the clutch actuator; a cruise control device arranged and programmed to perform control to maintain the vehicle speed at a prescribed vehicle speed by controlling an output of the engine while the clutch is engaged, and to cancel the control to maintain the vehicle speed at a prescribed vehicle speed when the clutch is disengaged; and a determination device arranged to determine whether the cruise control device is performing the control to maintain the vehicle speed at the prescribed vehicle speed; wherein when the cruise control device is determined to not be performing the control to maintain the vehicle speed at a prescribed vehicle speed, the clutch actuator control device (70, 135) is adapted to perform control to disengage the clutch when a value of a parameter, which is either the rotation speed of the engine or the vehicle speed, becomes equal to or lower than a first threshold value; and when the cruise control device is determined to be performing the control to maintain the vehicle speed at a prescribed vehicle speed, the clutch actuator control device (70, 135) is adapted to perform the control to disengage the clutch when the value of the parameter becomes equal to or lower than a second threshold value, which is lower than the first threshold value.