In modern motorsports, vehicle dynamics are pushed to their absolute limits, with high-speed cornering presenting challenges to both performance and safety. Such existing systems as KERS, Active Yaw Control and ESC tend to act independently of the aerodynamic control. This study investigates a three-degree-of-freedom active aerodynamic rear wing, controlled by a hybrid PID–Fuzzy Logic framework, designed to mitigate vehicle roll, pitch, and yaw. A MATLAB/Simulink model was employed to evaluate downforce, drag, and Euler angles, while CFD simulations confirmed that the active configuration generated significantly greater downforce compared to a passive wing. Experimental validation using Arduino-based PID control demonstrated effective roll and pitch actuation, while fuzzy logic control enabled real-time adjustment of the wing in response to yaw inputs. The findings indicate that active aerodynamics provide a viable approach to enhancing vehicle stability in high-performance motorsport applications.