New A6 e-tron is the most aerodynamic Audi ever
Sep 16, 2024
The new Audi A6 Sportback e-tron has been developed with an incredible drag coefficient (Cd) of 0.21, making it the most aerodynamic Audi ever produced and leading the entire Volkswagen Group in its segment. Not far behind, the A6 Avant e-tron also tops the wagon segment with a Cd of 0.24.
Aerodynamics has been a key part of Audi's innovation since the 1960s. The NSU Ro 80’s wedge-shaped body (pictured below), with a Cd of 0.35, revolutionized car design in 1967. This legacy continued with the third-generation Audi 100 and 80, achieving Cd values of 0.30 and 0.29 respectively.
Aerodynamics experts Andreas Lauterbach reflects on the rigorous process: "Achieving these values required around 2,800 simulations and countless hours in the wind tunnel. Our initial goals seemed ambitious, but through meticulous work, we exceeded them."
The development involved close collaboration between aerodynamic specialists and designers through an iterative process of virtual simulations and physical wind tunnel testing, which allowed them to optimize every detail. For example, air curtains and refined aero bezels significantly enhanced airflow, improving the range of the A6 Avant e-tron by eight kilometers.
The attention to detail is evident in the vehicle’s underfloor design with every millimeter fine-tuned to reduce drag. Innovations like optimized radii and a smooth rear diffuser contribute to the car's low Cd value. Similarly, Valencia Pollex’s wheel designs, including special 19” and 20” aero wheels, further improved aerodynamic efficiency.
The Audi A6 e-tron models are a great example of how advanced aerodynamics can significantly enhance electric vehicle performance.