Air vent control.
Optimised aerodynamics and shortened cold-run phases: the air vents between the double-kidney grille and the radiator lower fuel consumption and emission levels from the moment you start driving.
Provided the engine operating temperature permits, the air vents remain closed and guide the air flow around the radiator to improve aerodynamics. When more cooling is needed, the engine management system opens the vents.
One positive side effect of the closed air vents is that, after a cold start, engine oil and catalytic converters reach their operating temperature faster and the fuel-air mix burns more efficiently. This preserves the engine and significantly reduces emissions.