The drag coefficient (Cd) is a numerical value that quantifies a vehicle’s aerodynamic efficiency as it moves through air. A lower drag coefficient means less air resistance, which helps improve the vehicle’s energy efficiency and range. EVs, in particular, benefit from streamlined designs with low drag coefficients to maximize the distance they can travel on a single charge. For example, the Tesla Model S has one of the lowest drag coefficients of any production car, helping it achieve superior range compared to less aerodynamic vehicles.
