Koenigsegg
One:1

Why it matters

The One:1 was the first homologated production car with a power-to-weight ratio of 1:1, in other words one horsepower per kilogram of kerb weight, which gave the car its name. With one megawatt of output it was also called the world's first production megacar.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Each kind of rarity is rated separately and never combined.

Photos

Exterior, interior and detail photos with their licences.

• Koenigsegg One:1 (Wikimedia Commons: Category:2014 Koenigsegg One:1 s/n 7106)
  Photo: MrWalkr · CC BY-SA 4.0
• Koenigsegg One:1 (Wikimedia Commons: Koenigsegg One:1)
  Photo: Ank Kumar · CC BY-SA 4.0

Production

Every figure says what it counts.

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

Koenigsegg took about 100 kg out of the Agera R to reach a 1,360 kg kerb weight to match its 1,360 hp on E85. Seven cars were built in 2014 and 2015: six customer cars and one factory development car. In July 2015 a One:1 recorded 17.95 seconds for the 0-300-0 km/h run, and the model took lap records at Spa-Francorchamps and Suzuka in 2015.

Technical specifications

Engine

Transmission & drivetrain

Chassis, body & dimensions

Performance

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

Identification guide

How to tell an original from a replica or later conversion.

The One:1 has track-optimised winglets, extended venturi tunnels and side splitters, a Le Mans-style active rear wing, large cooling vents, a roof air scoop and Aircore carbon wheels. Egg Registry cites chassis numbers 7110 and 7112 among the seven cars; 7112 is the only one delivered to North America.

Sources

Each number links to the exact facts it supports.

1. 1
   One:1 Level A Koenigsegg Automotive AB

   • Made in only 7 examples Built between 2014 and 2015
   • 5.0-liter twin-turbocharged V8 engine
   • 5.0 Liters V8 displacement
   • produces 1,360 hp and 1,371 Nm (1,011 lb-ft) of torque at 6000 rpm
   • 1371 Nm Max Torque
   • 1,371 Nm ... at 6000 rpm
   • 8250 RPM RPM limiter
   • The transmission is a 7-speed dual-clutch with paddle shifters
   • 7-speed dual-clutch
   • upgraded rear Triplex suspension with carbon bevel springs and active shock absorbers
   • 1360 kg Curb weight

   Accessed 2026-11-12
2. 2
   Ultimatecarpage: Koenigsegg One:1 Level C

   • 7 cars built including the prototype

   Accessed 2026-11-11