Motorcycle exhaust gas sensor.

Vehicle according to one of claims 1 to 10, wherein the exhaust gas sensor (25) is an O2 sensor. a main frame (4) a motor (10) mounted on the main frame (4); an exhaust pipe (9) connected to the motor (10); and a sensor exhaust (25) mounted in the exhaust pipe (9), characterized in that an external sensor exhaust (25) in a widthwise direction of the vehicle is shielded by the main frame (4) where the main frame extends obliquely longitudinally of the vehicle.