BUGATTI TOURBILLON: ENGINEERING A NEW SOUND FOR A NEW ERA

For more than two decades, the sound of a Bugatti has been closely associated with the W16. From the Veyron onwards, through the Chiron family, the Bolide, Mistral and numerous individual commissions, the eight-litre 16-cylinder engine became an integral part of how the marque was experienced. Its replacement, therefore, was never going to be simply a matter of developing another powertrain. With the Tourbillon, Bugatti had to establish a new acoustic identity.

The latest episode of Bugatti’s A New Era development series explores how that identity was formed. Behind the finished car lies an extensive programme of acoustic engineering, simulation and testing, culminating in homologation. The objective was not to reproduce the W16, but to create a sound appropriate to an entirely new mechanical architecture while retaining something recognisably Bugatti in its character.

The starting point was the brand’s history. The Tourbillon combines a naturally aspirated V16 with an electric powertrain, creating an acoustic profile fundamentally different from the turbocharged W16 that preceded it. Yet Bugatti’s engineers did not regard the change as a reason to abandon the marque’s established personality.

“Bugatti, from a sound perspective, has never had a very clean-sounding engine. It has always been a little bit dirty and raw, so we decided to keep that as one of the key points of the sound.”

Romain Volatier, Head of NVH & Acoustics at Bugatti, describes this quality as an important part of the development brief. Achieving it with the Tourbillon demanded extensive experimentation. Engineers ran thousands of simulations involving the exhaust and air-intake systems, continually adjusting the acoustic balance between performance, refinement and mechanical character.

The sound also needed to communicate what was happening mechanically. For a driver, engine speed is not merely a technical measurement; it can form part of the physical relationship between throttle input and acceleration. Paolo Magrone, Bugatti Vehicle Development Driver, explains that connection from the perspective of testing the car:

“As a test driver, it’s very important that I can hear the engine and feel the engine speed increasing in connection with the throttle. I need to connect the sound of the engine with what I’m asking from it through the throttle.”

That relationship becomes particularly interesting in a hybrid hyper sports car. The Tourbillon must accommodate two contrasting acoustic experiences: the quietness expected during electric driving and the increasingly expressive mechanical character of its naturally aspirated V16 when its performance is called upon.

The engineers therefore had to consider the cabin as carefully as the engine itself. With the windows closed, the interior needed to remain sufficiently refined for everyday use. In electric mode, the experience could become quieter still. Opening the windows, however, allows another layer of the car’s character to enter the cabin, bringing the mechanical sounds of the intake and exhaust closer to the occupants.

A crucial principle was that this experience should remain mechanically generated. Rather than creating an artificial engine note through the vehicle’s speakers, Bugatti’s acoustic development focused on allowing the authentic sounds of the powertrain to reach the cabin in a controlled manner.

This made the final stage of development particularly demanding. The sound could not be judged purely as an emotional component; it also had to satisfy the regulations governing vehicle noise. Homologation testing would determine whether the carefully developed acoustic character could exist within the required limits.

The relevant testing is considerably more involved than recording a single measurement. Bugatti explains that the process includes several different runs, including constant-speed and accelerated tests, which together contribute to the final result. The permitted maximum for the relevant test is 72 decibels.

Importantly, the microphones do not isolate the V16. They register the acoustic contribution of the vehicle as a whole, including the tyres, bodywork and aerodynamic components. On the Tourbillon, this makes the active aerodynamics particularly relevant. Its rear wing generates significant downforce while also contributing to the overall sound produced by the moving vehicle.

Environmental conditions introduce another variable. Temperature and wind speed have to remain within defined parameters, while gusts can invalidate an otherwise successful run. Consequently, the engineers carried out numerous preliminary tests before reaching the final homologation session.

The process illustrates an aspect of hyper sports car development that is easy to overlook. A dramatic engine note may appear spontaneous when experienced from behind the wheel, but its final character can be the product of years of controlled engineering. Every element that contributes to what the occupants and surrounding environment hear has to coexist with regulations, usability and the physical behaviour of the car.

For Bugatti, the conclusion of this work came after three years of Tourbillon development. The successful completion of homologation marked the end of the major acoustic programme, although smaller refinements continued.

“We’re still working on small refinements and little details. The big chunk of the project is done, and we are here just to close this chapter. It’s been a successful and positive testing activity.”

Magrone’s assessment captures the development team’s final stage: the principal acoustic decisions had been made, tested, and validated.

The resulting Tourbillon represents a significant mechanical departure from the cars that came before it. Its naturally aspirated V16 reaches 9,000 rpm, giving the engine a different progression and character from the turbocharged W16. Combined with its electric powertrain, the architecture reflects Bugatti’s attempt to move forward without treating its past as something to be discarded.

That balance has always been important to the marque. Ettore Bugatti founded the company in 1909 in Molsheim, Alsace, establishing the location that remains central to Bugatti more than a century later. The first factory occupied a former dyeworks, where production of the Type 13 followed the development of Ettore’s earlier Type 10. The company’s history subsequently became closely associated with lightweight engineering, racing success and distinctive design, with cars such as the Type 35 and Type 57 establishing a legacy that continues to influence modern Bugatti.

The modern marque returned to Molsheim in the early 2000s with the Veyron, establishing the hyper sports car as a new chapter in Bugatti’s history. The Veyron’s W16 subsequently became one of the defining technical signatures of the modern brand. The Tourbillon now represents the next step: not an attempt to preserve that sound unchanged, but a deliberate effort to develop another.

For customers and enthusiasts in the UAE, Bugatti’s established presence remains centred on Dubai. Al Habtoor Motors has represented the marque in the United Arab Emirates since 2006, with Bugatti having previously identified its Dubai operation as an official sales and service partner.

The Tourbillon’s sound is therefore best understood not simply as an exhaust note, but as another piece of the car’s engineering architecture. It has been simulated, measured, adjusted, and subjected to the same regulatory scrutiny as its other systems. Yet after all the calculations, what remains is something considerably more instinctive: the rising mechanical voice of a naturally aspirated V16 and the sense of connection it creates between throttle, engine speed and driver.

Bugatti’s W16 era had a sound that became inseparable from its generation of cars. The Tourbillon does not attempt to imitate it. At 9,000 rpm, it speaks in a different register—one shaped by a new powertrain, but still rooted in the marque’s long-standing belief that engineering should be felt as much as it is understood.