Yangwang U9 Xtreme
#1 · Yangwang · 14 Sep 2025
496.22km/h308mph138m/s268kn4.8× cheetahClaimed
Cars
Bugatti Chiron Sport
Car and Driver's instrumented test of a Chiron Sport. It is not the standard Chiron's manufacturer 0–100 km/h claim.
0–60 mph
2.40s
Car and Driver instrumented test of a Chiron Sport, 4544 lb. Standing-start times omit a 1-foot rollout of 0.2 seconds. This 2.4 seconds is 0–60 mph, not Bugatti's separate 2.4-second 0–100 km/h claim for the Chiron.
This list
Why it's so fast
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.
Drag and gearing
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.
What the sources signed
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
Every measurement
Claimed, measured and official figures side by side, each with its source. The ranked figure is marked.
- 2.40sRanked figure
0–60 mph. Car and Driver instrumented test of a Chiron Sport, 4544 lb. Standing-start times omit a 1-foot rollout of 0.2 seconds. This 2.4 seconds is 0–60 mph, not Bugatti's separate 2.4-second 0–100 km/h claim for the Chiron.
Verified - 9.40sRanked figure
Quarter mile. Same Chiron Sport test. Quarter mile 9.4 seconds at 158 mph. Standing-start time omits a 1-foot rollout of 0.2 seconds.
Verified
Reference
Specs
- Car tested
- Chiron Sport
- Curb weight in test
- 4544 lb
Spot a wrong number?
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