Today, the automotive world is more transparent than ever, with hypercar manufacturers like Bugatti giving owners, enthusiasts, and the media access to nearly every stage of the Tourbillon’s evolution, from the first reveal to the first startup.
As part of its behind-the-scenes docuseries ‘A New Era’, the Bugatti development team travels to Seville for track testing, exposing the Tourbillon to the heat of southern Spain, where temperatures rise well above 104°F. It's an important part of development for a car with an 1,800-horsepower hybrid powertrain, especially when that power comes from an all-new naturally aspirated V16 working with three electric motors and an 800-volt battery.
While it’s stunning just to look at, there's a lot going on underneath the Tourbillon, which makes keeping everything at the right temperature a top priority. Two electric motors drive the front axle while a third works with the V16, creating plenty of heat when the car is being pushed. To keep track of what is happening, Bugatti installed more than 200 thermocouples throughout its prototypes. Those sensors allow engineers to monitor temperatures across the powertrain and other areas while the car is being driven.
Testing in Spain includes both public roads and the racetrack. Road testing puts the Tourbillon in high ambient temperatures similar to what an owner might face in hot-weather traffic. Track work is more demanding, with the engine, electric motors, brakes, tires, and cooling systems all being pushed at the same time. Engineers are also paying attention to the cabin, making sure the HVAC system can maintain a comfortable temperature for the driver and passenger.
On the other side, testing in Arjeplog, Sweden, exposed the car to temperatures as low as -22°F, with engineers focusing on cold-weather driving, braking, stability, and low-grip conditions. The idea is to see how the car behaves across a wide range of environments rather than relying on simulations. With the production version still ahead, there will be plenty more testing before the first customer cars are ready.
