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Bugatti looks back at how how it developed the W16 engine

As the end of the Chiron's production run nears, Bugatti is taking a look back at the W16 engine that has powered its cars since it returned to the scene nearly 20 years ago. The engine is relatively compact, hugely powerful, and it has helped the firm set several world records. Former Volkswagen boss Ferdinand Karl Piech knew that successfully reviving Bugatti required building a car that stood out from everything else on the road at the time. He initially planned to power the then-upcoming Veyron with an 18-cylinder engine and sketched it out on an envelope while riding on a high-speed train from Tokyo to Osaka in Japan in 1997. His concept later became a 16-cylinder engine, but dropping a pair of cylinders didn't make the unit easier to develop. Bugatti engineers started from scratch in order to make the W16 a reality. "We had to engage in basic development for every component; every vehicle part had to be constructed anew and tested — even the engine test bench. The only thing we didn't change was the pencils we used for drawing," said former Bugatti head of technical development Gregor Gries. The initial goal was to launch the Veyron with over 1,000 horsepower, and even some insiders doubted that this could be achieved. Bugatti pulled it off: The Veyron entered production in 2005 with a quad-turbocharged, 8.0-liter W16 engine rated at 1,000 horsepower and 922 pound-feet of torque. Horsepower increased to 1,200 in the Veyron Super Sport, and the Chiron inaugurated a new version of the engine rated at 1,500 horsepower thanks in part to bigger turbos, though the Chiron Super Sport offers a 1,600-horsepower output. Engineers faced several significant challenges during the Veyron's development process. Getting the W16 to make 1,000 horsepower wasn't one; it broke the symbolic barrier the first time it was put on a test bench in 2001. Keeping its temperature in check required designing a massive cooling system that takes over 10 gallons of coolant and installing a titanium exhaust system. With the engine ready to go, Bugatti turned its attention to creating a car capable of coping with 1,000 horsepower, both in terms of comfort and in terms of aerodynamics. "Back then, there was no literature or empirical data for production engines with more than 12 cylinders or for production vehicles that could go faster than 217 mph," said Karl-Heinz Neumann, Volkswagen's former head of engine development.

Bugatti Vision Gran Turismo sounds as ferocious as it looks

The Vision Gran Turismo program lets auto designers go wild on special creations for the PlayStation game. Bugatti went a little further with its entry by unveiling the full-scale hypercar at the Frankfurt Motor Show. The company even put a ferocious sounding engine in it – as you can hear in his video. Even at very low revs, the Bugatti Vision Gran Turismo is incredibly loud, and its quad pipes make a raw sound. The hypercar only idles around an exhibition center in this clip, but the concept still exudes an aggressive presence at such low speeds. We'd love to hear the Bugatti on the open road because the engine note probably improves as the speed climbs. The Vision Gran Turismo was a one-off, but the concept provided an early preview of the upcoming Chiron's styling. Based on spy shots, they share similar noses with narrow headlights. Both also put a visual emphasis on the oval that the A-pillar forms as it flows into the massive side intake. The Chiron cleans up the shape by removing most of the oversized ducts and spoilers, though. The brand's new hypercar finally debuts at the Geneva Motor Show in March.

The Bugatti Baby II is a three-quarter-scale Type 35

Bugatti ownership is about to get a lot more affordable — particularly for children with indulgent parents. The French supercar company has announced the Bugatti Baby II, a follow-up to a model produced from 1927 to 1936. Like the original baby Bugatti, a model originally built for the 4-year-old son of Ettore Bugatti, the Baby II is modeled after the Type 35 grand prix car. The Baby II is only about 1/100th of the price of the Chiron Sport at 30,000 Euro (about $33,700). And because it's a three-quarter-scale replica rather than the original's half-scale, it's possible for adults and not just children to squeeze behind the wheel. Finished in French Racing Blue (although other colors can be specified), the Baby II also features eight-spoke aluminum wheels, a leather driver's seat, and an aluminum-trimmed dash displaying a numbered plaque. On the hood is Bugatti's "Macaron" badge, rendered in solid silver, just the thing for the silver-spoon set. As with the original, the Baby II features an electric powertrain and rear-wheel drive, although here it has been upgraded to incorporate a lithium-ion battery, regenerative braking, and even a limited-slip differential. Whereas the full-size Chiron supercar has 1,479 horsepower from its 16-cylinder engine, the smaller-scale Bug is somewhat less powerful, with an electric motor offering 1.3 horsepower in "child mode," which is good for 12 mph; an "adult mode" increases output to just over 5 hp and raises top speed to 28 mph. But just as the Chiron offers an optional Speed Key that unleashes the powertrain's full potential, so too does the Baby II — in this case 13 horsepower with no speed limiter. Typical for Bugatti, production is limited. Only 500 units will be built, about the same number as the 1920s–'30s original. Related Video: