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Koenigsegg Sadair’s Spear is a 1,603bhp Thoroughbred
Craig Toone
By
Images by
Koenigsegg
Published
26 Jun 2025
Koenigsegg Sadair’s Spear is a 1,603bhp Thoroughbred

Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.
Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.
Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.
Koenigsegg has pulled the wraps off their latest hypercar. Naturally, power is up, but weight is also down, the interior is stripped-out, the brakes have been upgraded and the suspension has been revised. You might’ve also noticed the rather large aerodynamic apparatus.
The new car, based upon the Jesko, is said to be track-focused but, encouragingly, road legal. Koenigsegg’s latest could also be its greatest.

Before we get further into the details, we must first ask what’s in a name? The Jesko was famously named after Christian von Koenigsegg’s father, a tribute delivered on his 80th birthday. While cars have clearly been Christian’s purpose, his father was more interested in a different kind of horsepower. In his formative years, Koenigsegg Snr was a passionate gentleman jockey and has lifelong ties to Sweden’s equestrian community. His favourite racehorse – the one he rode in his final race in 1976 – was named Sadair’s Spear.
Thus, what you’re looking at is the Koenigsegg Sadair’s Spear.
When you think about it, naming a flagship hypercar after a thoroughbred racehorse makes a lot of sense – both are about the pursuit of speed, after all. Could we be on the verge of a new naming legacy for the Swedish manufacturer, akin to Lamborghini’s relationship with fighting bulls?

Either way, the Sadair’s Spear continues another Koenigsegg legacy – a better than one-to-one power-to-weight ratio. Redesigned air intakes and an ECU tweak result in a 20bhp increase in power. That means a total of 1,282bhp on regular unleaded fuel, and up to 1,603bhp using eco-friendly E85 fuel. The Sadair’s Spear also features Koenigsegg’s pioneering flywheel-free Light Speed Transmission (LST), capable of revving at an impressive 46,000rpm/s.
In terms of handling, the Spear benefits from a specific suspension setup featuring lightweight springs and Koenigsegg-designed Triplex dampers. Hollow carbonfibre wheels feature, in an exclusive 7-spoke, ‘directional’ design for each corner. Wrapped around them are wider, track-oriented tyres. The Jesko’s multi-layer carbon-ceramic brakes have been carried over, albeit with upgraded pad materials for track use.

The biggest focus, however, has clearly been on aerodynamics and cooling. Expanded front canards, louvres, and reengineered bonnet vents – including a new Gurney flap – are all designed to increase downforce and track endurance. The rear of the car has also been elongated to increase stability, and the new, active bi-plane rear wing works in tandem with revised underbody aero.
Koenigsegg has not released any figures on the increase in downforce, but the Sadair’s Spear has already bettered the Jesko Attack’s lap record around the Gotland Ring by 1.1 seconds during shakedown testing.

Despite the extra weight of the elongated body, a collective 35kg has been cut from the overall mass of the car. Reduced sound insulation saves 2.6kg, while “new carbon fibre techniques” contribute 2.6kg. Weight-saving continues with new carbonfibre racing seats (available with six-point harnesses) and a more minimalist specification – although features like USB connectivity, inductive charging and birds-eye parking assist still remain.
Christian von Koenigsegg said: “Sadair’s Spear represents a natural progression for Koenigsegg – an impeccable balance of raw power, refined aerodynamics, and extraordinary road presence. This car is destined to set records. Achieving such track dominance in a fully road-legal vehicle is nothing short of remarkable.”
The Swedish manufacturer has allocated 30 units for production, and no price has been revealed because all have been sold in advance at a private unveiling. Koenisegg's website describes the Sadair’s Spear as “the final chapter of our tribute to Jesko von Koenigsegg” suggesting work on a successor to the 1,603bhp hypercar is already well underway.


Author
Photography by:
Koenigsegg
Published on:
26 June 2025
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Craig Toone
Rush Founder
Obsessed with cars and car magazines ever since growing up in the back of a Sapphire Cosworth. Wore the racing line into the family carpet with his Matchbox toys. Can usually be found three-wheeling his Clio 182 Trophy around the Forest of Bowland, then bemoaning its running costs.
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Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.
Koenigsegg
26 June 2025
Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.
First published
26 June 2025
Last updated
26 June 2025
Photography
Koenigsegg
W
Koenigsegg has pulled the wraps off their latest hypercar. Naturally, power is up, but weight is also down, the interior is stripped-out, the brakes have been upgraded and the suspension has been revised. You might’ve also noticed the rather large aerodynamic apparatus.
The new car, based upon the Jesko, is said to be track-focused but, encouragingly, road legal. Koenigsegg’s latest could also be its greatest.

Before we get further into the details, we must first ask what’s in a name? The Jesko was famously named after Christian von Koenigsegg’s father, a tribute delivered on his 80th birthday. While cars have clearly been Christian’s purpose, his father was more interested in a different kind of horsepower. In his formative years, Koenigsegg Snr was a passionate gentleman jockey and has lifelong ties to Sweden’s equestrian community. His favourite racehorse – the one he rode in his final race in 1976 – was named Sadair’s Spear.
Thus, what you’re looking at is the Koenigsegg Sadair’s Spear.
When you think about it, naming a flagship hypercar after a thoroughbred racehorse makes a lot of sense – both are about the pursuit of speed, after all. Could we be on the verge of a new naming legacy for the Swedish manufacturer, akin to Lamborghini’s relationship with fighting bulls?

Either way, the Sadair’s Spear continues another Koenigsegg legacy – a better than one-to-one power-to-weight ratio. Redesigned air intakes and an ECU tweak result in a 20bhp increase in power. That means a total of 1,282bhp on regular unleaded fuel, and up to 1,603bhp using eco-friendly E85 fuel. The Sadair’s Spear also features Koenigsegg’s pioneering flywheel-free Light Speed Transmission (LST), capable of revving at an impressive 46,000rpm/s.
In terms of handling, the Spear benefits from a specific suspension setup featuring lightweight springs and Koenigsegg-designed Triplex dampers. Hollow carbonfibre wheels feature, in an exclusive 7-spoke, ‘directional’ design for each corner. Wrapped around them are wider, track-oriented tyres. The Jesko’s multi-layer carbon-ceramic brakes have been carried over, albeit with upgraded pad materials for track use.

The biggest focus, however, has clearly been on aerodynamics and cooling. Expanded front canards, louvres, and reengineered bonnet vents – including a new Gurney flap – are all designed to increase downforce and track endurance. The rear of the car has also been elongated to increase stability, and the new, active bi-plane rear wing works in tandem with revised underbody aero.
Koenigsegg has not released any figures on the increase in downforce, but the Sadair’s Spear has already bettered the Jesko Attack’s lap record around the Gotland Ring by 1.1 seconds during shakedown testing.

Despite the extra weight of the elongated body, a collective 35kg has been cut from the overall mass of the car. Reduced sound insulation saves 2.6kg, while “new carbon fibre techniques” contribute 2.6kg. Weight-saving continues with new carbonfibre racing seats (available with six-point harnesses) and a more minimalist specification – although features like USB connectivity, inductive charging and birds-eye parking assist still remain.
Christian von Koenigsegg said: “Sadair’s Spear represents a natural progression for Koenigsegg – an impeccable balance of raw power, refined aerodynamics, and extraordinary road presence. This car is destined to set records. Achieving such track dominance in a fully road-legal vehicle is nothing short of remarkable.”
The Swedish manufacturer has allocated 30 units for production, and no price has been revealed because all have been sold in advance at a private unveiling. Koenisegg's website describes the Sadair’s Spear as “the final chapter of our tribute to Jesko von Koenigsegg” suggesting work on a successor to the 1,603bhp hypercar is already well underway.



Koenigsegg’s new flagship blends 1,603bhp with road legality, weight-saving focus and a record-setting debut – all rooted in a personal legacy.