What are active aerodynamics systems and how do they improve vehicle performance?

Active aerodynamics systems adjust aerodynamic elements based on driving conditions. Examples include: Active grille shutters (close at speed for reduced drag, open for cooling), active rear spoilers (deploy at high speed for downforce, retract for efficiency), active ride height (lower at speed for reduced drag), and active underbody panels. Control strategies consider vehicle speed, engine/battery temperature, and driving mode. Benefits include optimizing the drag-downforce trade-off at different speeds, typically providing 5-10% drag reduction while maintaining cooling and stability when needed.