FREE TOOL · TOP SPEED PHYSICS

Aerodynamic drag power

Drag scales with velocity cubed. Doubling speed = 8× the power required. This is why a Bugatti needs 1500 HP for 480 km/h while 700 HP gets you to 400.

Drag reference

VehicleTop speedCrank HP needed
VW Golf GTI (Cd 0.30, 2.2 m²)250 km/h~245 HP
Porsche 911 GT3 (0.34, 2.0 m²)320 km/h~500 HP
Bugatti Chiron (0.38, 2.07 m²)420 km/h~1500 HP
SSC Tuatara (0.279, 1.85 m²)500 km/h~1750 HP