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1,600-hp Bugatti Mistral roadster marks the end of the line for the W16 engine

Bugatti's mighty W16 engine will retire in the coming years, but it's not sailing off into the sunset quietly. It will power one final street-legal car: a roadster named Mistral that stands proud as the first convertible of the Chiron era. Built due to customer demand, the Bugatti Mistral is a striking, limited-edition model that looks ready to add another speed record to the French firm's trophy case. I sat down with some of the people who created it, including Bugatti design director Achim Anscheidt and head of design Frank Heyl, to get the droptop's full story. "For the final road-going appearance of Bugatti’s legendary W16 engine, we knew we had to create a roadster. Well over 40% of all Bugatti vehicles ever created have been open-top in design," said Bugatti-Rimac CEO Mate Rimac. Heyl added that customers "begged" Bugatti to create a Chiron-derived convertible, and that granting them this wish was a "bucket-list" item for the members of his team. Power for the Mistral comes from the same 8.0-liter, quad-turbocharged 16-cylinder engine that propelled the Chiron Super Sport 300+ to a record-breaking 304.773 mph in 2019. It's rated at 1,600 horsepower, and it spins the four wheels via a seven-speed dual-clutch automatic transmission. Bugatti estimates that the Mistral's top speed will check in at approximately 261 mph (420 kph). Will this number get verified? Hell, yes! "There can only be one goal in mind: to become the fastest roadster in the world once more," Bugatti pledged in a statement. While the Mistral is Chiron-based, Bugatti made several important structural changes to offset the inevitable loss of structural rigidity caused by chopping off the roof. Heyl explained that the monocoque's sills and transmission tunnel were reinforced and that the a- and b-pillar structures are new, though the front crash structure is the same. And, the two models intentionally share no exterior styling cues. "We had the pressure of creating something that is precious and valuable in a car collector's garage. It's not just a fashion statement: 'Oh, let's do a roadster!' Or, even worse, 'Let's take a Chiron and just cut it open,' which would have looked terrible. This burdens us with the responsibility that this is the last of its kind of that generation and how that's going to sit in those collections," Anscheidt told Autoblog.

Bugatti Chiron Sport Edition Noire Sportive marks the production halfway point

For Bugatti, possibly only for Bugatti, a 1,479-horsepower coupe with a quad-turbocharged 8.0-liter W16 is just the starting point. Bugatti unveiled the Chiron in 2016 with the intent of building 500 examples, and four years later, 250 units and numerous extraordinary limited-editions have been crafted. To mark the occasion, Bugatti will show No. 250, a Chiron Sport Edition Noire Sportive, at the 2020 Geneva International Auto Show, where it all began. Near the end of 2019, Bugatti announced two new blacked-out Chirons, one called the Chiron Noire Elegance and the other called the Chiron Noire Sportive. The Elegance model exhibits a reflective gloss, while the Sportive has a muted matte exterior. Backing up the Noire designation, the Sportive model goes completely black, with nearly nothing left to show off any sort of metallic sparkle. The Elegance, however, looks a bit more dressed up with aluminum and silver accents. Both feature Noire script graphics, including on the underside of the rear wing. The Noire models are limited to 20 examples total, and No. 250 will surely be one of the most interesting of the bunch. The Noire Elegance and Sportive follow in the footsteps of Bugatti's (and the world's) most expensive release, the Bugatti La Voiture Noire. A coachbuilt homage to the Bugatti 57 SC Atlantic, the La Voiture Noire reportedly cost more than $18 million, with fees and taxes factored in. It was limited to only one example, and it was only one of numerous special launches that spawned from the Chiron. In addition to the base Chiron, Bugatti has also released the lighter and sharper Chiron Sport, on which the car seen here is based. Then there was the Chiron-based Divo "for the bends," and then came the Chiron Super Sports 300+ to honor the car that broke the 300-mph barrier. Other special editions included the 110 ans Bugatti Chiron to honor the company's history and the Bugatti Centodieci that honors the Bugatti EB110 supercar. So much honor. For only having one car in its lineup, Bugatti sure has made a lot of different vehicles, and we recently found out it could have been more. In an Autoblog exclusive, we learned Bugatti also planned two never-before-seen coupes that would have been marketed alongside the Chiron. Unfortunately, they never made it through to see production. With 250 produced, only 250 remain, and their availability is getting increasingly more scarce.

Bugatti says the W16's days are numbered

Bugatti's W16 engine is likely to be irreplaceable for the hypercar maker. The company's CEO Stephan Winkelmann has stated that there will not be a successor for the quad-turbocharged engine. Speaking to the Australian CarAdvice, Winkelmann said that there will not be a new 16-cylinder engine to replace the existing unit, but that the company will look further to the future. "This will be the last of its kind," said Winkelmann. "Sooner or later the legislation will force everybody to take radical steps. [...] If you want to be on the edge of advanced technology, it's important you choose the right moment to change." Currently, the nearly-1,500-horsepower engine does duty in the Chiron and the newly unveiled Divo. However, the W16, as it stands, isn't quite dead yet. Winkelmann stated that the company will do its "utmost" to keep the venerable engine alive, and that it will keep being honed further in the quest for more power, as the hypercar horsepower race is hot and heavy. Dinosaurs die hard, it seems. Still, Winkelmann is eager to push the envelope for an alternate approach, saying that the company could focus on different things than getting more power from the W16 unit. According to the CEO, if there is a hybrid powerplant or an electrified solution for future Bugattis, the powertrain needs to be more than up to the task. "If the weight of the batteries is going down dramatically — as it is — and you can reduce the emissions to a level which is acceptable, then hybridization is a good thing, but it has to be a solution that is credible for the people who are buying Bugattis today." Related Video: News Source: CarAdviceImage Credit: Bugatti Auto News Bugatti Luxury Performance Supercars