Best in class: outstanding aerodynamics
Superior aerodynamics is a core component of the long history of successes for Audi. The aerodynamic heroes of the past, such as the Audi 100 (C3) and the Audi 80 (B3), also belong to the mid-size segment.

Further improved aerodynamics

With the Audi Q8 e-tron*, the topic of aerodynamics was a top priority. This resulted in a reduction of the drag coefficient from 0.26 to 0.24 cw for the Q8 Sportback e-tron* and from 0.28 to 0.27 cw for the Q8 e-tron*. The wheel spoilers mounted on the underbody help divert airflow around the wheels. The spoilers on the front axle were enlarged, and the Audi Q8 Sportback e-tron* now has spoilers on the rear wheels as well. With the SQ8 Sportback e-tron*, spoilers are only mounted on the rear axle. In the area around the grille, this is the first time an Audi model has had a self-sealing system in addition to the electric shutters that automatically close the radiator. This system further optimizes the airflow at the front of the car and prevents undesired losses.

The design of the new Audi RS 32 is even more dynamic and powerful than that of its predecessor. In the front, the wide RS bumper, the redesigned Singleframe with its distinctive honeycomb grille, and the large air intakes give the compact sports car an expressive appearance.

The design of the two compact electric SUVs is full of character and impresses with the high quality of its aerodynamics. The Audi Q4 e-tron and the Q4 Sportback e-tron generate drag coefficients of 0.28 and 0.26 respectively, with the efficiency and range reaping the benefits.

The aerodynamics benefit from the higher rear end compared with the predecessor as well as the large diffuser. As a result, the new A3 Sedan with the 2.0 TDI 110 kW (150 PS) achieves a Cd value of 0.25 and is therefore 0.04 Cd points better than the first generation.

The airflow through the wheel arch trims helps Audi resolve the conflict of objectives between outstanding aerodynamics and sporty looks. For the first time, the brand with the Four Rings is bringing this innovative, patented solution to high-volume automobile production.

Low wind noise is an important comfort factor, particularly on the highway. At speeds of 120 km/h (74.56 mph), the whooshing of the wind is the loudest source of noise in the interior of many cars.

Aerodynamic drag plays an important role in customers’ driving behavior. In cars such as the A8, which are used predominantly for long-distance travel, aerodynamic drag also accounts for almost half of the running resistance. Outfitted with the 4.2 FSI, the luxury sedan has a drag coefficient of 0.26 and a frontal area of 2.41 sq m (25.94 sq ft). Low lift coefficients at the front and rear axles ensure confident stability at highway speeds.

The study of air flow through the engine compartment is a relatively recent branch of aerodynamics. In the new models, the area around the grille is thoroughly sealed so that the inflowing air reaches the radiator with virtually no losses instead of becoming turbulent.

A car produces 40 to 50 percent of its total aerodynamic drag in and around the underbody, the wheels and the wheel arches. Audi has an excellent tool for optimizing these zones – the aeroacoustic wind tunnel. With its rolling floor and the four small treadmills on which the wheels can turn, it provides insightful and detailed analyses.