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In 1998, the Volkswagen Group purchased the trademark rights on the former car manufacturer Bugatti in order to revive the brand. Starting with the Bugatti EB118, they presented at various international auto shows a total of four 18-cylinder concept cars. At the 1999 Tokyo Motor Show, the first study of the Veyron was presented.[11] At the time the name of the concept car was "Bugatti Veyron EB 18.4" and it was equipped with a 3-bank W 18-cylinder engine instead of the 2-bank W 16-cylinder engine of the production version. While the three previous prototypes had been styled by Giugiaro, the Veyron was designed by the Volkswagen stylists.

The decision to start production of the car was taken by the Volkswagen Group in 2001. The first roadworthy prototype was completed in August 2003. It is identical except for a few details to the later series variant. In the development to series production, however, considerable technical problems had to be addressed, so that the start of production was delayed repeatedly, until September 2005.

The Veyron EB 16.4 is named in honour of Pierre Veyron, a Bugatti development engineer, test driver and company race driver who, with co-driver Jean-Pierre Wimille, won the 1939 24 hours of Le Mans while driving a Bugatti.The "EB" refers to Bugatti founder Ettore Bugatti and the "16.4" refers to the engine's 16 cylinders and four turbochargers.World Record Controversy

At the beginning of April 2013, an inquest into the Veyron SuperSport's speed record was made by driving.co.uk. They claimed that the car had been modified in the respect that the speed limiter had been taken off to make the record. Guinness World Records investigated this claim and found that indeed the modification was against the official guidelines of the record. Upon finding this, GWR quickly voided the SuperSport's record and announced it was "reviewing this category with expert external consultants to ensure our records fairly reflect achievements in this field.”

After further review, SSC, the producers of the Ultimate Aero TT, said that they had reclaimed the record. A couple of days later though, GWR said they had reinstated the SuperSport's record, after coming to the conclusion that "a change to the speed limiter does not alter the fundamental design of the car or its engine.”[

The Veyron's quad-turbocharged W16 engine

The Veyron features an 8.0-litre, quad-turbocharged, W16 cylinder engine, equivalent to two narrow-angle V8 engines. Each cylinder has four valves for a total of 64, but the narrow staggered V8 configuration allows two overhead camshafts to drive two banks of cylinders so only four camshafts are needed. The engine is fed by four turbochargers and displaces 7,993 cubic centimetres (487.8 cu in), with a square 86 by 86 mm (3.39 by 3.39 in) bore and stroke.

First U.S. Bugatti Veyron on display in April 2006

The transmission is a dual-clutch direct-shift gearbox computer-controlled automatic with seven gear ratios, with magnesium paddles behind the steering wheel and a shift time of less than 150 milliseconds, built by Ricardo of England rather than Borg-Warner, who designed the six speed DSG used in the mainstream Volkswagen Group marques. The Veyron can be driven in either semi-automatic or fully automatic mode. A replacement transmission for the Veyron costs just over US$120,000.[18] It also has permanent all-wheel drive using the Haldex Traction system. It uses special Michelin PAX run-flat tyres, designed specifically to accommodate the Veyron's top speed, and cost US$25,000 per set.[18] The tyres can be mounted on the rims only in France, a service which costs US$70,000.[18] Kerb weight is 1,888 kilograms (4,162 lb). This gives the car a power-to-weight ratio, according to Volkswagen Group's figures, of 446.3 metric horsepower (328 kW; 440 bhp) per ton.

The car's wheelbase is 2,710 mm (106.7 in). Overall length is 4,462 mm (175.7 in) which gives 1,752.6 mm (69.0 in) of overhang. The width is 1,998 mm (78.7 in) and height 1,204 mm (47.4 in). The Bugatti Veyron has a total of ten radiators:

It has a drag coefficient of 0.41 (normal condition) and 0.36 (after lowering to the ground), and a frontal area of 2.07 m2 (22.3 sq ft).[22] This gives it a drag area – the combination of drag coefficient and frontal area, represented as CdA – of 0.74 m2 (8.0 sq ft).

According to Volkswagen Group and certified by TÜV Süddeutschland, the final production Veyron engine produces 1,001 metric horsepower (736 kW; 987 bhp) of motive power, and generates 1,250 newton metres (922 lbf·ft) of torque.The nominal figure has been stated by Bugatti officials to be conservative, with the real total being 1,020 metric horsepower (750 kW; 1,006 bhp) or more.

German inspection officials recorded an average top speed of the original version of 408.47 km/h (253.81 mph)during test sessions on the Ehra-Lessien test track on 19 April 2005.

This top speed was verified by James May on Top Gear in November 2006, again at Volkswagen Group's private Ehra-Lessien test track. May noted that at top speed the engine consumes 45,000 litres (9,900 imp gal) of air per minute (as much as a human breathes in four days). The Veyron at the time had the highest top speed of any street legal production car. Back in the Top Gear studio, co-presenter Jeremy Clarkson commented that most supercars felt like they were shaking apart at their top speed, and asked May if that was the case with the Veyron at 407 km/h (253 mph). May responded that no, the Veyron was very controlled, and only wobbled a tiny bit when the air brake deployed. May further commented, “Absolutely yeah, it’s totally undramatic. But I would give you a bit of a warning: It’s a bit disorientating doing that sort of speed, because after I came off the banking, I was slowing down to stop, and you know how you get a bit impatient and think ‘I’ll just open the door’; fortunately I looked back at the speedo, and I was still doing seventy.”

The car's everyday top speed is listed at 350 km/h (220 mph). When the car reaches 220 km/h (140 mph), hydraulics lower the car until it has a ground clearance of about 9 cm (3.5 in). At the same time, the wing and spoiler deploy. In this handling mode the wing provides 3,425 newtons (770 lbf) of downforce, holding the car to the road.