Air-directing device for a motor-vehicle body, and motor-vehicle body

A motor-vehicle body, comprising:

• an air-directing device configured to influence a downforce and a drag coefficient, wherein the air-directing device is configured to be provided in a rear-end region of the motor-vehicle body, the air-directing device comprising:
• an air-directing element having a longitudinal axis and being accommodated in a guide element of the air-directing device, a flow channel being formed between the guide element and the air-directing element, wherein flow can take place through the flow channel starting from an entry opening, which faces toward a front of the motor-vehicle body, and extending through an exit opening, which faces away from the entry opening,
• wherein the air-directing device is configured so that the air flowing through the flow channel is guided thereby such that it can flow out of the exit opening transversely to an outer contour of the air-directing element, and
• wherein the air directing element, at a rear side surface thereof, ends in front of or projects below a first separation edge of the guide element at the exit opening.