Bugatti Veyron Grand Sport 217 mph. At the 2012 Geneva Motor Show, Bugatti has released the latest Veyron varaint called the Grand Sport Vitesse. This amazing super car is claimed to be fastest roadster in the world, without tuning of course. We recall the standard Bugatti Veyron Grand Sport was limited to 217 mph. The new Bugatti Veyron Grand Sport Vitesse received four larger turbochargers to give it 1,200 horsepower and 1106 lb-ft of torque, capable of reaching 229 mph from the factory. Now just wait until some tuning companies get their hands on this beast. That is, if anyone is crazy enough to modify a 2-3 million dollar super car.