A vehicle door assembly, comprising - a first frame component which comprises a window frame for a window opening and two mutually opposite lateral frame sections (13A, 13B) for definition of a frame cutout and forms a sill section which connects the two lateral frame sections (13A, 13B) to one another and separates the window opening and the frame cutout from one another, - a second frame component for reinforcing the window frame, which is fixed to the first frame component, and - a door module carrier which is formed with an organosheet and at least partially closes the frame cutout on the first frame component, wherein the door module carrier forms an edge section which is fixed to the sill section along a longitudinal extension direction of the sill section, and wherein the door module carrier formed with organosheet is configured in the form of a load-bearing structural component and for this purpose - is stiffened on its edge section by at least one stiffening structure injection-molded onto the organosheet, and - by way of its edge section reinforces the sill section of the first frame component in a continuous region in which no section of the second frame component is provided, characterized in that the sill section of the first frame component extends between two mutually opposite flange sections (22A, 22B) of the second frame component, which are connected to one another on the second frame component only by a window frame reinforcement of the second frame component, said window frame reinforcement reinforcing the window frame. - a first frame component which comprises a window frame for a window opening and two mutually opposite lateral frame sections (13A, 13B) for definition of a frame cutout and forms a sill section which connects the two lateral frame sections (13A, 13B) to one another and separates the window opening and the frame cutout from one another, - a second frame component for reinforcing the window frame, which is fixed to the first frame component, and - a door module carrier which is formed with an organosheet and at least partially closes the frame cutout on the first frame component, wherein the door module carrier forms an edge section which is fixed to the sill section along a longitudinal extension direction of the sill section, and wherein the door module carrier formed with organosheet is configured in the form of a load-bearing structural component and for this purpose - is stiffened on its edge section by at least one stiffening structure injection-molded onto the organosheet, and - by way of its edge section reinforces the sill section of the first frame component in a continuous region in which no section of the second frame component is provided, - is stiffened on its edge section by at least one stiffening structure injection-molded onto the organosheet, and - by way of its edge section reinforces the sill section of the first frame component in a continuous region in which no section of the second frame component is provided, characterized in that the sill section of the first frame component extends between two mutually opposite flange sections (22A, 22B) of the second frame component, which are connected to one another on the second frame component only by a window frame reinforcement of the second frame component, said window frame reinforcement reinforcing the window frame.