Introduced in 2014, this Swedish megacar was conceived as a landmark exercise in extreme performance and engineering efficiency. Its name refers to the target it achieved: a one-to-one power-to-weight ratio, which Koenigsegg described as a “dream” ratio for a road-legal sports car. The car was positioned as a highly limited, track-focused sibling to the Agera R, but it carried its own identity through unique aerodynamic hardware, revised suspension hardware, and a development program aimed at combining high downforce with everyday usability.
The model became notable not just for its performance reputation, but for its place in Koenigsegg’s history. The company presented it as the first homologated production car in the world to reach the 1:1 ratio, and also as its first production “megacar.” Production was extremely limited, with only seven customer cars built. The run was short and continuous, spanning the 2014 and 2015 model years before ending.
In enthusiast circles, it is often regarded as one of the defining Koenigsegg specials of the modern era: a halo car that distilled the brand’s early-2010s philosophy of lightweight construction, advanced aerodynamics, and obsessive powertrain development into a single, instantly recognizable nameplate. It also helped establish technical ideas and visual cues that would influence later Koenigsegg models.