Woll and his team spent around 500 hours on simulations of the EQC alone. The aerodynamic properties of the real model are then examined in the wind tunnel. The tests clearly show the considerable influence that individual design elements have on the aerodynamics of the EQC. For example, the installation of running boards at the height of the side skirts as well as various measures on the diffuser and front and rear aprons have made it possible to reduce the cd value significantly.
In addition, there are the advantages of an electric vehicle: on the one hand, the underbody is smooth and completely closed – this not only provides the necessary protection for the battery but also improves the airflow under the vehicle. On the other hand, there is no combustion engine in the front, which requires the large air volumes of a classic radiator grille. In the special radiator grille of the EQC, an active air control system was installed, in which the fins can be completely closed as required to guide the air more effectively over the top and bottom of the vehicle. The specially developed AMG light-alloy wheels also make a significant contribution to the successful aerodynamic performance. All in all, these measures result in an exceptionally low cd value of 0.27.