A range of features to regulate airflow over, around and under the body, enhance aerodynamic performance and contribute to the excellent fuel economy and handling stability. They include front spats, front fender liners, aero stabilizing fins on the door frame covers and rear combination lamps and shaping of the inner rear mudguard. In addition, shutters in the upper grille open and close automatically to enhance both aerodynamic and engine cooling performance. While warming up and driving, when the airflow required for cooling the engine is excessive, the shutters close to optimize the amount of air flowing into the grille.