A method and a device to adjust the axle geometry of a vehicle (1), wherein measurement values are taken into account, which are automatically detected at the wheels that are arranged at a fully assembled chassis (14) of the vehicle (1). Advantageously, the chassis (14) is moved to an empty-weight position and at least one of the wheels is rotated. Preferably, an additional measurement value, which represents an inclination of the steering wheel (18) of the vehicle (1) is detected and taken into account. Advantageously, the adjusting device for adjusting the axle geometry is integrated into an assembly line after assembly devices that serve to at least assemble the chassis (14) and the wheels of the vehicle (1).