420 km/h in a Roadster: How Is That Possible?

The development of the W16 Mistral roadster was heavily influenced by aerodynamic research undertaken by Bugatti. This journey began with simulations in a digital environment, where the team was able to think ahead about airflow management, then refined through real-world testing. At such high speeds, only these meticulous tests can meet the performance standards required by Bugatti.

From computer to road via the wind tunnel.

After an extremely rigorous technical analysis based on advanced digital fluid dynamics software (CFD), the W16 Mistral went through the critical wind tunnel phase. The Bugatti team tackled this challenge by developing a sophisticated design inspired by aeronautics, combined with highly advanced technical features. Its intelligent design diverts airflow away from the occupants while ensuring the iconic 16-cylinder engine remains breathable, creating a ballet of airflow at high speed.

Located on the upper line of the windshield of the W16 Mistral, a deflector diverts airflow away from the driver and passenger while ensuring it reaches the rear wing, thereby enhancing the vehicle’s downforce. Spectacular air intake vents, situated behind the headrests, effectively feed the four turbochargers of the 8.0-liter V16 engine. These vents, though highly refined aesthetically, are also a vital safety feature for the occupants. Constructed from carbon fiber, they are designed to rigorous anti-rollover standards.

Mistral, an air-mastering roadster

On the side panels of the roadster, intelligent air intakes maximize dynamic pressure levels. They manage both airflow and pressure to cool the engine oil, transmission, and rear axle. Hot air is efficiently expelled from the vehicle through ducts leading to the rear lights, where it is then drawn out by negative pressure—a functioning similar to a chimney.

Inside the diffuser, a ramp-shaped, upward-inclined configuration facilitates the expulsion of hot air and enhances the overall downforce of the roadster. The unique “X” shape of the rear lights not only completes the aesthetic look but also plays a vital role in venting the side oil coolers through carefully designed air intakes, ensuring precise management of the mid-temperature cooling circuit.

The development of the W16 Mistral lives up to the wind that gave it its name and resulted in the creation of the most aerodynamic Bugatti roadster to date.