Front diffuser for a vehicle

A front diffuser for disposal in a region of an underbody cladding of a vehicle, the front diffuser comprising:

• a diffuser wall defining a diffuser duct having an inflow side and an outflow side;
• and
• an air guide device mounted so as to be rotatable about a predefined rotation axis and configured to, by way of a rotating movement, move from a first rotary position at least partially into the diffuser duct to a second rotary position and move from the second rotary position at least partially out of the diffuser duct to the first rotary position,
• wherein the air guide device is configured as a molding and includes a first external face and a second external face, wherein the first external face in the first rotary position faces the diffuser duct and extends from the rotation axis toward the outflow side, and wherein the first external face in the second rotary position faces the inflow side, and the second external face on an external periphery of the first external face adjoining the first external face, wherein the second external face in the second rotary position faces the outflow side, and wherein the second external face, at least in portions, does not run parallel with the first external face.