Abstract: A motor vehicle having at least one side door opening formed in the body of the same and having a sliding door closing the same, wherein the side door opening has a sill structure for supporting and movably guiding the sliding door, wherein the sill structure has a hollow profile oriented in the vehicle longitudinal direction (x-direction) and formed as a welded part, and wherein the hollow profile on the vehicle exterior has a welding flange, extending along the sill structure and oriented in the vehicle vertical direction (z-direction), as a mounting flange for a door seal, which delimits an indentation formed in an upper section of the outer contour of the hollow profile. It is provided advantageously that a recess having at least one guide rail for a roller guide of the sliding door is disposed above the indentation, which recess is detachably secured to the sill structure.

Abstract: A motor vehicle having at least one side door opening formed in the body of the same and having a sliding door closing the same, wherein the side door opening has a sill structure for supporting and movably guiding the sliding door, wherein the sill structure has a hollow profile oriented in the vehicle longitudinal direction (x-direction) and formed as a welded part, and wherein the hollow profile on the vehicle exterior has a welding flange, extending along the sill structure and oriented in the vehicle vertical direction (z-direction), as a mounting flange for a door seal, which delimits an indentation formed in an upper section of the outer contour of the hollow profile. It is provided advantageously that a recess having at least one guide rail for a roller guide of the sliding door is disposed above the indentation, which recess is detachably secured to the sill structure.