The fastest road-legal production car of all time is the Bugatti Chiron Super Sport 300+, with a top speed of 304 mph (490 km/h). The Chiron Super Sport 300+ is a limited edition variant of the Bugatti Chiron, and it was announced in 2019. It is powered by an 8.0-liter, quad-turbocharged W16 engine that produces 1,577 horsepower and 1,180 lb-ft of torque.
The Chiron Super Sport 300+ features a number of aerodynamic enhancements that help it achieve its high top speed, including a larger rear wing and a more aggressive front splitter. It also has a strengthened seven-speed dual-clutch transmission and a modified suspension system that helps to keep the car stable at high speeds.
The Chiron Super Sport 300+ is a limited-edition car, only 30 units will be produced and it is not intended for public roads but only for track use. Bugatti claims that it was able to reach this speed thanks to the car’s lightweight construction, powerful engine, and advanced aerodynamics, as well as its advanced suspension and braking systems. The Chiron Super Sport 300+ represents the ultimate in high-performance road-legal production cars, and it is a testament to the engineering expertise of Bugatti and the capabilities of modern technology.