A device (100, 200) and method for facilitating the assembly of swan -neck shaped hinges, such as trunk lid hinges (11), to a vehicle body (1). The device (100, 200) and method for mounting the trunk lid hinge (11) can adjust the position of the hinge box (15) of a swan-neck shaped hinge along the normal direction of a surface (3) of the vehicle body (1). The device (100, 200) and method can be used in the case where the trunk lid's hinge box (15) is attached to the vehicle body (1) by protruding through an opening in the surface (3) during the assembly of the vehicle.