an underbody structure for at least two motor vehicles , in particular for at least two passenger cars having a first and a second wheelbase , is provided . the underbody structure comprises a middle underbody structure and a rear underbody structure with laterally arranged side members , between which at least one connecting profile is arranged . the connecting profile is connected to the side members and to a floor of the middle underbody structure to form a first overlap region for the first wheelbase and a second overlap region for the second wheelbase . the first and the second overlap region have an at least approximately same width .