A vehicle substructure includes at least one wing device for producing at least one underflow and at least one overflow from inflowing air to improve a downforce, the at least one wing device having at least one air-guiding apparatus for dividing the inflowing air into at least one wing air flow for the underflow of the wing device and into at least one structure air flow for at least one vehicle component. The air-guiding apparatus includes at least one adaptable air-guiding element. A dividing ratio of the at least one wing air flow and the at least one structure air flow can be flexibly set by at least one adaptation of the air guiding element.