Vehicle fluid controller

A vehicle fluid controller to be applied to a vehicle. The vehicle fluid controller includes a jet generator, a wind detector, and a jet controller. The jet generator is configured to generate a jet of air and is disposed at an edge of a vehicle-body opening through which a vehicle cabin of the vehicle is allowed to be open to an outside of the vehicle. The wind detector is configured to detect a speed and a direction of wind acting on the vehicle body of the vehicle. The jet controller is configured to control the jet from the jet generator in accordance with the speed and the direction of the wind in such a manner as to disturb an airflow passing over the vehicle-body opening along a surface of the vehicle body.