Aerodynamics at Mercedes-Benz: Efficiency, Range & Innovation

Aerodynamics at Mercedes-Benz: Less Air Resistance, More Efficiency, and Lower Consumption

When it comes to efficiency in modern vehicles—especially electric ones—few factors are as crucial as aerodynamics. Mercedes-Benz has long understood that reducing air resistance is not just about speed, but also about efficiency, range, and comfort. In fact, lowering the drag coefficient (Cd) by just 0.01 can boost an EV’s long-distance range by about 2.5 percent. That translates into an extra 375 kilometers per year for a car driving 15,000 kilometers annually.

A Legacy of Aerodynamic Innovation

Mercedes-Benz was ahead of its time in realizing that airflow matters. The journey began with iconic models like the W 125 (1937), the 540 K Streamliner (1938), and the experimental C111 (1970s). By 1984, the W124 became the first production car to break the Cd 0.30 barrier, achieving 0.29.

Fast forward, and Mercedes kept pushing limits:

• CLA (2013): Cd 0.22
• EQS: Cd 0.20 – the most aerodynamic production car at the time
• New CLA with EQ Technology: Cd 0.21, a leader in its segment
• VISION EQXX (2022): Cd 0.17, setting new standards in efficiency

Notably, even performance-focused models like the AMG GT XX balanced efficiency and speed. Thanks to its Cd value of 0.19, it managed to secure 25 long-distance records on the Nardò test track in 2025.

Beyond Speed: Aerodynamics for Today’s Needs

While racing once focused on downforce for high-speed stability, today’s priority lies in efficiency, range, and comfort. Mercedes-Benz doesn’t just minimize drag—it also leads in aeroacoustics (reducing wind noise), cleanliness (keeping cars dirt-free), and open-top comfort.

This dedication is backed by decades of investment. The Large Wind Tunnel in Untertürkheim, first used in 1943, remains vital for testing. In 2013, Mercedes added an advanced aeroacoustic wind tunnel in Sindelfingen, pushing innovation even further.

The All-New CLA: Small Details, Big Gains

The latest all-electric CLA showcases Mercedes’ mastery. With a Cd starting from 0.21, it’s one of the most aerodynamic cars in its class. Achieving this required meticulous attention to detail:

• Optimised wheels: New bicolour full-cover wheels cut drag by up to 15 Cd points compared to conventional ones.
• Wheel spoilers: Redesigned around both axles to reduce turbulence.
• Sealed joints: Around the grille and headlights for smoother airflow.
• Flat underbody: Almost fully covered, including suspension arms and tie rods.
• Rear diffuser variants: Tailored designs depending on whether a trailer hitch is installed.

Each element may seem small on its own, but together, they significantly enhance efficiency, making the CLA a daily driver that combines style, comfort, and sustainability.

The Mercedes-Benz Formula: Efficiency Meets Luxury

Mercedes-Benz’s aerodynamic expertise shows that efficiency doesn’t come at the cost of luxury or driving pleasure. Instead, it enhances it—extending range, lowering consumption, and improving comfort. From record-breaking concepts like the VISION EQXX to production models like the CLA, the brand continues to prove that airflow is as important as horsepower in shaping the future of mobility.

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