The Koenigsegg One:1, produced in extremely limited numbers between 2014 and 2015, represents a pinnacle of hypercar engineering. Named for its groundbreaking 1:1 power-to-weight ratio – 1360 horsepower to 1360 kilograms (approximately 3000 lbs) – the One:1 was designed to be the first production car capable of exceeding 270 mph. It stands as a testament to Koenigsegg’s commitment to pushing the boundaries of automotive performance. The One:1 is a two-seat, two-door coupe built upon a bespoke carbon fiber chassis, and its powertrain is centered around a highly modified 5.0-liter twin-turbocharged V8 engine paired with a 7-speed automatic transmission.
Technical Specifications
| Brand | Koenigsegg |
| Model | One:1 |
| Generation | One:1 |
| Type (Engine) | 5.0 V8 (1360 Hp) Automatic |
| Start of production | 2014 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Coupe |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 2.8 sec |
| Acceleration 0 – 62 mph | 2.8 sec |
| Acceleration 0 – 200 km/h | 6.6 sec |
| Acceleration 0 – 300 km/h | 11.9 sec |
| Maximum speed | 440 km/h (273.4 mph) |
| Weight-to-power ratio | 1 kg/Hp, 1000 Hp/tonne |
| Weight-to-torque ratio | 1 kg/Nm, 1008.1 Nm/tonne |
| Power | 1360 Hp @ 7500 rpm |
| Power per litre | 268.5 Hp/l |
| Torque | 1371 Nm @ 6000 rpm (1011.2 lb.-ft. @ 6000 rpm) |
| Maximum engine speed | 8250 rpm |
| Engine layout | Middle, Longitudinal |
| Engine displacement | 5065 cm3 (309.09 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92 mm (3.62 in.) |
| Piston Stroke | 95.25 mm (3.75 in.) |
| Compression ratio | 9:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Twin-Turbo, Intercooler |
| Kerb Weight | 1360 kg (2998.29 lbs) |
| Fuel tank capacity | 74 l (19.55 US gal | 16.28 UK gal) |
| Length | 4500 mm (177.17 in.) |
| Width including mirrors | 2060 mm (81.1 in.) |
| Height | 1150 mm (45.28 in.) |
| Wheelbase | 2662 mm (104.8 in.) |
| Front track | 1700 mm (66.93 in.) |
| Rear (Back) track | 1650 mm (64.96 in.) |
| Front overhang | 944 mm (37.17 in.) |
| Rear overhang | 900 mm (35.43 in.) |
| Ride height (ground clearance) | 59-90 mm (2.32 – 3.54 in.) |
| Drag coefficient (Cd) | 0.45 |
| Minimum turning circle (turning diameter) | 11 m (36.09 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Wheel rims size | 9.5J x 19; 12.5J x 20 |
Powertrain & Engine Architecture
At the heart of the One:1 lies a 5.0-liter V8 engine, heavily modified from Koenigsegg’s existing engine family. The engine utilizes a 90-degree V-angle and features a dry sump lubrication system to ensure consistent oil supply during extreme cornering. Crucially, the engine employs a unique free-valve technology, eliminating traditional camshafts. Instead, pneumatic and hydraulic actuators directly control each valve, allowing for fully independent control of intake and exhaust timing. This system, combined with twin-turbochargers constructed from lightweight materials, contributes to the engine’s exceptional power output. The fuel injection system is a multi-port design, optimized for the high-performance demands of the engine. The 7-speed automatic transmission is a bespoke unit designed to handle the immense torque produced by the V8. It features incredibly fast shift times and is programmed for both aggressive performance driving and more relaxed cruising.
Driving Characteristics
The One:1’s driving experience is defined by its astonishing acceleration and responsiveness. The 1:1 power-to-weight ratio translates into brutal, almost otherworldly performance. The automatic transmission, while providing convenience, is geared for maximum acceleration, with quick upshifts and downshifts. The car’s active aerodynamics, including adjustable rear wing and front flaps, work in concert with the powertrain to provide exceptional stability at high speeds. Compared to a hypothetical manual version, the automatic offers slightly reduced driver engagement but compensates with consistently rapid gear changes, maximizing acceleration. The car’s lightweight construction and advanced suspension contribute to a surprisingly compliant ride for a vehicle of its performance caliber.
Equipment & Trim Levels
Given its limited production run and ultra-high price point, the One:1 was largely bespoke. Customers had significant input into the interior and exterior finishes. Standard features included a fully digital instrument cluster, a high-end audio system, and extensive use of carbon fiber throughout the cabin. Interior upholstery was typically Alcantara and leather, with a focus on lightweight materials. Optional extras included custom paint schemes, unique interior trim options, and bespoke aerodynamic elements. The One:1 was not offered with traditional “trim levels” in the conventional sense; each car was essentially a one-off creation tailored to the owner’s preferences.
Chassis & Braking
The One:1’s chassis is a full carbon fiber monocoque, providing exceptional rigidity and minimizing weight. The suspension utilizes double wishbones at both the front and rear, with adjustable dampers and anti-roll bars. Braking is provided by ventilated discs at all four corners, with ABS (Anti-lock Braking System) as standard. The car’s lightweight construction and advanced braking system contribute to exceptional stopping power. The steering system is a rack and pinion setup with electric power assistance, providing precise and responsive control.
Market Reception & Comparison
The Koenigsegg One:1 was met with widespread acclaim from automotive journalists and enthusiasts. Its groundbreaking performance and innovative technology were universally praised. Comparisons were often drawn to other hypercars of the era, such as the Bugatti Veyron and the McLaren P1, with the One:1 frequently lauded for its superior power-to-weight ratio and handling characteristics. Reliability, while not a primary concern for owners of such exclusive vehicles, has proven to be generally good, with Koenigsegg providing comprehensive support for its customers. The car’s extreme performance and limited production run ensured a high resale value in the used car market.
Legacy
The Koenigsegg One:1 remains a landmark achievement in automotive engineering. Its 1:1 power-to-weight ratio set a new benchmark for hypercar performance, and its innovative technologies, such as the free-valve engine, continue to influence automotive design. The One:1 solidified Koenigsegg’s reputation as a leading manufacturer of ultra-high-performance vehicles and paved the way for future Koenigsegg models. Today, the One:1 is highly sought after by collectors and represents a significant investment, with values continuing to appreciate due to its rarity and historical importance.
