Koenigsegg One:1

The Koenigsegg One:1 earned its name from a rare feat: a genuine 1:1 power-to-weight ratio, with 1,341 hp matched almost exactly to its roughly 1,341 kg curb weight. Built in extremely limited numbers—just six examples—this Swedish hypercar used a twin-turbo 5.0-liter V8 and extensive carbon-fiber construction to deliver performance figures once thought impossible, including a top speed exceeding 273 mph achieved during testing. Aggressive aerodynamics, active wing elements, and track-honed suspension made it as capable on circuits as in a straight line. As a production model, the One:1 remains a landmark in Koenigsegg's history, showcasing the brand's engineering ambition and cementing its reputation among the world's elite hypercar makers.