A method for producing and installing a front end of a motor vehicle, including an arrangement including a structural front surface forming a structure that supports engine-cooling elements, to which structure a front protective molding and the projector headlamps are attached. In addition, the vehicle includes a hood hinged on hinge brackets secured to the vehicle structure, and side wings connected to the front pillar lining of the vehicle structure. The method includes adjusting the structural front surface in the transverse direction to a transverse position determined relative to the hood, placing a gauge device between the hood and the front structural face.