2,340 horsepower. That’s the total combined power output of the Bugatti Veyron Vitesse and Koenigsegg Agera R. Since the Veyron was introduced in 2005, it has become the poster child for flat-out speed. However within the last 10 years a few other manufacturers have stepped up to offer a challenge. One of the biggest guns comes in the form of the Koenigsegg Agera R. This is a car with 1,140 hp, a top speed of 273 mph and a drag coefficient of 0.33 to 0.37 with adaptable rear wings which makes it incredibly slippery. The big question though is, which car is faster – the Bugatti Veyron Vitesse or the Koenigsegg Agera R. Click through to find out.