To prevent the inclination sensor from soiled by flying matter such as muddy water splashes scattered by the rotating wheels of the running vehicle itself, which may result in false detection of the inclination of vehicle to road surface, a vehicle provided with an inclination sensor for detecting the inclination of vehicle to road surface is proposed, wherein the sensor is attached onto the undersurface of the vehicle at a position inside from the wheels in the direction of width of the vehicle, and a cover member having at least either of a side cover portion for covering the wheel side of the inclination sensor or a rear side portion for covering the rear side of the inclination sensor in the longitudinal direction of the vehicle is provided.