Abstract: A method and an apparatus for measuring wheel alignment of motor vehicles, particularly, toe-in and the angle of camber, comprising at least a pair of measuring units. Each unit comprises a sensor plate having a semi-circular configuration substantially corresponding to the upper half of the wheel to be measured. The sensor plate is brought into contact with the outer side face of one of a pair of front or rear wheels of a vehicle. The sensor detects the inclination of the sensor plate in the vertical level which is perpendicular to the floor surface on which the vehicle is placed. The sensor also detects the direction of the sensor plate in the horizontal level which is parallel to the floor surface. The angle of camber of the wheel is determined on the basis of the measured inclination of the sensor plate. The toe-in of the pair of wheels is determined on the basis of the measured directions of the sensor plates for the pair of wheels.