2007 Bugatti Veyron

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According to Volkswagen (and approved by TÜV Süddeutschland) the final production Veyron engine produces 736 kW (987 hp) which is equivalent to 1001 PS (german horsepower). However, the car is advertised as producing “1001 horsepower” in both the US and European markets.bugatti-veyron-1.jpg

Top speed was initially promised to be 406 km/h (252 mph) but test versions were unstable at that speed, forcing a redesign of the aerodynamics. In May, 2005, a prototype Veyron tested at a Volkswagen track near Wolfsburg, Germany recorded an electronically limited top speed of 400 km/h (249 mph). In October, 2005, Car and Driver magazine’s editor Csaba Csere test drove the final production version of the Veyron for the November 2005 issue. This test, at Volkswagen’s Ehra-Lessien test track, reached a top speed of 407.5 km/h (253.2 mph). The top speed was verified once again by James May on Top Gear, again at Volkswagen’s private test track, when the car hit 407.9 km/h. When getting close to the top speed during the test he said that “the tires will only last for about fifteen minutes, but it’s OK because the fuel runs out in twelve minutes.” He also gave an indication of the power requirements, at 249 km/h (155 mph) the Veyron was using approximately 270 BHP (201 kW), but to get to its rated 407 km/h (253 mph) top speed required far more from the engine. Aerodynamic friction or drag is proportional to the square of the speed. That means going any given distance the engine must do 4 times as much work. But, going twice as fast, the engine must do that work in half the time. To go twice the speed, therefore, you need eight times the power. German inspection officials recorded an average top speed of 408.47 km/h (253.8 mph) during test sessions on the Ehra Lessien test track on April 17, 2007.

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The Veyron is the quickest production car to reach 100 km/h (62 mph) with a proven time of 2.5 seconds. It reaches 60 mph in approximately 2.46 seconds. It also reaches 200 and 300 km/h (124 and 186 mph) in 7.4 and 16.7 seconds respectively. And according to the February 2007 issue of Road & Track Magazine, the Veyron accomplished the quarter mile in 10.2 seconds at a speed of 142.9 mph (230 km/h). Other tests, however, have the Veyron hitting 150 mph (241 km/h) in 9.8 seconds , so the quarter mile time is actually faster, making the Veyron the quickest and fastest production car in history. It is so fast, that you could let a McLaren F1 (the predecessor of fastest road car) accelerate to 120 mph (193 km/h), and then start the Bugatti, and the Veyron would beat the McLaren to 200 mph (322 km/h). It also consumes more fuel than any other production car, using 40.4 L/100 km (5.82 mpg) in city driving and 24.1 L/100 km (10 mpg) in combined cycle.

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At full throttle, it uses more than 125 L/100 km (2.1 mpg), which would empty its 100 L (26.4 gallon) fuel tank in just 12.5 minutes. The car’s everyday top speed is listed at 375 km/h (233 mph). When the car reaches 220 km/h (137 mph), hydraulics lower the car until it has a ground clearance of about 8.9 cm (3½ inches). At the same time, the wing and spoiler deploy. This is the “handling mode”, in which the wing helps provide 3425 newtons (770 pounds) of downforce, holding the car to the road. The driver must, using a special key (the “Top Speed Key”), toggle the lock to the left of his seat in order to attain the maximum (average) speed of 408 km/h (254 mph). The key functions only when the vehicle is at a stop when a checklist then establishes whether the car—and its driver—are ready to enable ‘top speed’ mode. If all systems are go, the rear spoiler retracts, the front air diffusers close and the ground clearance, normally 12.5 cm (4.9 inches), drops to 6.5 cm (2.6 inches).

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The Veyron’s brakes use unique cross-drilled and turbine-vented carbon rotors which draw in cooling air to reduce fade. Each caliper has eight titanium pistons. Bugatti claims maximum deceleration of 1.3 g on road tires. Prototypes have been subjected to repeated 1.0 g braking from 194 to 50 mph (312 to 80 km/h) without fade. With the car’s fearsome acceleration from 50 to 194 mph (80 to 312 km/h), that test can be performed every 22 seconds. At speeds above 124 mph (200 km/h), the rear wing also acts as an airbrake, snapping to a 55-degree angle in 0.4 seconds once brakes are applied, providing 0.68 g (4.9 m/s²) of deceleration (equivalent to the stopping power of an ordinary hatchback). Bugatti claims the Veyron will brake from 400 km/h (249 mph) to a standstill in less than 10 seconds. The braking is also so evenly applied that the car will not deviate from a straight path if the driver lets go of the steering wheel, even with the brakes fully applied starting from close to top speed.

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Scribbled on March 30th 2006 in Bugatti, Bugatti Veyron, Bugatti Veyron 16.4
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