Last month, Bugatti was very pleased to announce that the Chiron set a world record, running from 0-400-0 km/h (0-249-0 mph) in just 42 seconds. Sadly for the French company, its record stood for less than a month, after a Koenigsegg Agera RS accomplished the same task in just 36.44 seconds. So, how did a small Swedish supercar firm go up against, and handily beat Bugatti?
Jason Fenske from analyzed video and data from both Bugatti and Koenigsegg's record runs and has the answer. Essentially, the race was won between 186-249 mph, with the Koenigsegg reaching 249 mph nearly six seconds sooner than the Chiron.
Interestingly, the Chiron ran to 186 mph 0.2 seconds quicker than the Agera RS, and the French hypercar held an even greater advantage up to 124 mph. , the rear-wheel drive Agera RS struggled for traction up to 114 mph on the concrete Danish runway where the test was completed. The all-wheel drive Chiron had no such problems at Volkswagen's smooth Ehra-Lessien proving grounds.
Braking performance of the two hypercars was similar too, with the Koenigsegg pulling a 26-foot advantage stopping from 249 mph. Fenske theorizes that the Chiron's active air brake, which takes 0.8 seconds to reach maximum attack, gave the Agera RS the edge.
Essentially, the Koenigsegg wins because it accelerates much harder than the Chiron once it finds traction. Why is that? Well, the 3075-pound Agera RS is a significant 1325 pounds lighter than the Chiron, and Fenske theorizes that it might have a slight aerodynamic advantage too. Koenigsegg hasn't released a drag coefficient for the Agera RS, but we do know the Chiron has a coefficient of 0.35 in its top-speed mode.
So power-to-weight ratio wins the day here, but Koenigsegg's victory shouldn't take anything away from the Chiron. Frankly, it's amazing that a luxurious, heavy car like the Chiron offers such incredible acceleration and braking performance. Still, Koenigsegg clearly wins this battle.