Yangwang U9 Xtreme
#1 · Yangwang · 14 Sep 2025
Cars
Bugatti states a top speed of 440 km/h for the Chiron Super Sport. The sentence is a manufacturer claim, not a published two-way average.
Top speed
Published as 440 km/hPublished as 440 km/hPublished as 440 km/h
Manufacturer-stated top speed of the production Chiron Super Sport. Not a cited two-way timed average.
In context
Worked out from the sourced figure above, which stays the ranked number.
This list
A car is fast when the force pushing it forward still beats the air, and when the tires and the gearing can use that force. A limiter is a different fact from an unlimited run.
Top speed is the balance point: thrust equals aerodynamic drag. The gearing has to still be pulling when the car gets there, or the engine falls off its power.
A manufacturer claim, a magazine test and an electronic governor are not interchangeable. The measurement line says which one this page ranked.
A limited example is the Bugatti Chiron.
This is how the category works. A note written for this entry appears here once it is in the database.
Provenance
Claimed, measured and official figures side by side, each with its source. The ranked figure is marked.
Manufacturer-stated top speed of the production Chiron Super Sport. Not a cited two-way timed average.
Reference
Head to head
Bugatti Chiron Super Sport vs Koenigsegg Agera RS
2% slower447.19km/h278mph124m/s241kn
Bugatti Chiron Super Sport vs Hennessey Venom GT
1% faster435km/h270.49mph121m/s235kn
Bugatti Chiron Super Sport vs Bugatti Chiron Super Sport 300+
1.1× slower490.484km/h305mph136m/s265kn
Bugatti Chiron Super Sport vs Bugatti Veyron 16.4 Super Sport
2% faster431.072km/h268mph120m/s233kn
Every report is read by a person, and corrections are dated on the page.