A straddled vehicle comprising: a water-cooled internal combustion engine including a crankcase having a side wall , a cylinder body connected to the crankcase , and a cylinder head connected to the cylinder body ; a water pump ; a radiator arranged forward relative to the cylinder body with regard to a front-rear direction of the vehicle; a thermostat arranged forward of the cylinder body and rearward relative to the radiator with regard to the front-rear direction of the vehicle; and an exhaust pipe that is connected to the cylinder head and through which an exhaust gas passes, wherein: a coolant passage through which a coolant flows is formed inside the internal combustion engine ; the water pump includes an inlet and an outlet connected to the coolant passage ; the exhaust pipe includes an exhaust pipe portion that is located between a front end and a rear end of the water pump with regard to the front-rear direction of the vehicle and said exhaust pipe portion has an upper edge , characterized in that the water pump is attached to the side wall of the crankcase and includes the inlet and the outlet connected directly to the coolant passage ; the upper edge of said exhaust pipe portion is located upward relative to a lower end of the water pump with regard to an up-down direction of the vehicle and as the vehicle is seen from the side; and the thermostat is arranged inward relative to the exhaust pipe portion in a vehicle width direction. a water-cooled internal combustion engine including a crankcase having a side wall , a cylinder body connected to the crankcase , and a cylinder head connected to the cylinder body ; a water pump ; a radiator arranged forward relative to the cylinder body with regard to a front-rear direction of the vehicle; a thermostat arranged forward of the cylinder body and rearward relative to the radiator with regard to the front-rear direction of the vehicle; and an exhaust pipe that is connected to the cylinder head and through which an exhaust gas passes, wherein: a coolant passage through which a coolant flows is formed inside the internal combustion engine ; the water pump includes an inlet and an outlet connected to the coolant passage ; the exhaust pipe includes an exhaust pipe portion that is located between a front end and a rear end of the water pump with regard to the front-rear direction of the vehicle and said exhaust pipe portion has an upper edge , characterized in that the water pump is attached to the side wall of the crankcase and includes the inlet and the outlet connected directly to the coolant passage ; the upper edge of said exhaust pipe portion is located upward relative to a lower end of the water pump with regard to an up-down direction of the vehicle and as the vehicle is seen from the side; and the thermostat is arranged inward relative to the exhaust pipe portion in a vehicle width direction. a coolant passage through which a coolant flows is formed inside the internal combustion engine ; the water pump includes an inlet and an outlet connected to the coolant passage ; the exhaust pipe includes an exhaust pipe portion that is located between a front end and a rear end of the water pump with regard to the front-rear direction of the vehicle and said exhaust pipe portion has an upper edge , characterized in that the water pump is attached to the side wall of the crankcase and includes the inlet and the outlet connected directly to the coolant passage ; the upper edge of said exhaust pipe portion is located upward relative to a lower end of the water pump with regard to an up-down direction of the vehicle and as the vehicle is seen from the side; and the thermostat is arranged inward relative to the exhaust pipe portion in a vehicle width direction. <EOS>