A wind deflector noise reduction system is provided. The wind deflector noise reduction system particularly reduces or eliminates wind throb in a moving vehicle having a rear side window in an open position. The system includes a panel attached to the B-pillar of a motor vehicle and operable to move between a closed position and an open position. When the panel is in the open position, wind is deflected from entering the moving vehicle. An actuator associated with the panel and operable to move the panel between the closed and the open position can be energized by a controller. The controller can be activated by the user of the motor vehicle and/or by a sensor that detects the position of the rear side window.