A method for manufacturing a carriage bodyshell of a rail vehicle, comprising the steps: providing a subframe, producing outer wall modules by a tailored blank method, in which cut-to-size sheet-metal panels (10, 11) with different material properties are joined together in butt-jointed fashion by laser welding to form a side wall surface, such that an outer surface of the side wall surface is formed without material steps at the abutment points, and wherein, during the production of the outer wall modules, a framework structure formed from framework structure profiles (5, 5a, 5b) is joined to an inner side of the side wall surface, joining together multiple outer wall modules at least to form a central side wall section, wherein the outer wall modules are joined to one another in butt-jointed fashion by laser welding without an offset being formed in the outer surface at the joint points of the outer wall modules, mounting at least the central side wall section, and if appropriate outer wall modules formed as side walls end modules and if appropriate face end modules, on the subframe and joining on roof elements (71, 72), characterized in that the step of producing an outer wall module comprises the joining of an angled upper chord profile to the side wall surface, wherein the upper chord profile forms a termination of a top edge of the outer wall module and is joined in butt-jointed fashion by laser welding to adjoining sheet-metal panels (10, 11) of different material characteristics without a material step being formed on the outer surface of the side wall surface, wherein the upper chord profile comprises a profile section which is angled relative to the outer surface of the side wall surface toward the inner side of the outer wall module, and in that, in the step of joining the framework structure to the inner side of the side wall surface, the framework structure profiles (5, 5a, 5b) are mounted by way of face-side abutment edges (19, 20, 21) on the inner side of the side wall surface, including the upper chord profile, by means of T-joints, and are cohesively fastened by means of laser weld seams. providing a subframe, producing outer wall modules by a tailored blank method, in which cut-to-size sheet-metal panels (10, 11) with different material properties are joined together in butt-jointed fashion by laser welding to form a side wall surface, such that an outer surface of the side wall surface is formed without material steps at the abutment points, and wherein, during the production of the outer wall modules, a framework structure formed from framework structure profiles (5, 5a, 5b) is joined to an inner side of the side wall surface, joining together multiple outer wall modules at least to form a central side wall section, wherein the outer wall modules are joined to one another in butt-jointed fashion by laser welding without an offset being formed in the outer surface at the joint points of the outer wall modules, mounting at least the central side wall section, and if appropriate outer wall modules formed as side walls end modules and if appropriate face end modules, on the subframe and joining on roof elements (71, 72), characterized in that the step of producing an outer wall module comprises the joining of an angled upper chord profile to the side wall surface, wherein the upper chord profile forms a termination of a top edge of the outer wall module and is joined in butt-jointed fashion by laser welding to adjoining sheet-metal panels (10, 11) of different material characteristics without a material step being formed on the outer surface of the side wall surface, wherein the upper chord profile comprises a profile section which is angled relative to the outer surface of the side wall surface toward the inner side of the outer wall module, and in that, in the step of joining the framework structure to the inner side of the side wall surface, the framework structure profiles (5, 5a, 5b) are mounted by way of face-side abutment edges (19, 20, 21) on the inner side of the side wall surface, including the upper chord profile, by means of T-joints, and are cohesively fastened by means of laser weld seams.