Koenigsegg is celebrating its 20th birthday this year, and for the occasion, the Swedish specialists are taking the hypercar to the next level with its new Agera One:1 at the 2014 Geneva Motor Show.

Discover the Koenigsegg One:1, the world's first production megacar with a 1:1 power-to-weight ratio and 1 megawatt of power.

What's in a name? For Koenigsegg's latest creation, something totally awesome, that's what. The "One:1" designation refers to a one-to-one power-to-weight ratio – one horsepower per kilogram.

An even more extreme supercar is on the way from Swedish supercar maker Koenigsegg with a knee-knocking ... meaning that ratio describes a one horsepower to one kilogram (2.2 lbs) ratio, but ...

From a 10-mph roll start in first, the Koenigsegg Agera RST did not stand a change against the all-wheel-drive, plug-in ...

The Swedish-made Koenigsegg One:1 model was stopped on the A55 on Anglesey. There are just seven models of the car in the world, including one prototype. Versions can drive at 439 km/h (273 mph ...

Jethro Bovingdon takes to the roads around Koenigsegg’s production facility in the most powerful road car evo has ever tested – the one metric horsepower to one kilogram One:1. Christian von ...

A digital designer for the Swedish supercar company Koenigsegg has just created an absolutely stunning car (albeit only in ...

The new Koenigsegg One:1 has been revealed. It’s set to become the world’s most powerful production car, packing 1,322bhp, and it's been shown for the first time at the Geneva Motor Show.