New Koenigsegg 'Sadair's Spear' lives up to name

Ultimate (for now) Jesko evolution gets more power, more aero, more brown

By Matt Bird / Wednesday, 25 June 2025 / Loading comments

You might remember that the wild Koenigsegg Jesko hypercar was named in honour of company founder Christian von Koenigsegg’s father. From the outside, it seemed hard to know where subsequent iterations of Jesko might go as far as names are concerned, but not for CvK himself. See old man Koenigsegg liked to race horses half a century ago, and Jesko’s favourite racehorse - used in his final race in 1976, no less - was called Sadair’s Spear. Thus the even faster Jesko we have here is the Koenigsegg Sadair’s Spear. Good job he wasn’t riding Red Rum…

‘Fittingly, the car bearing this storied name is uncompromisingly engineered for peak track performance’, suggests Koenigsegg. And the 1,280hp Jesko was hardly struggling in that regard. There’s more power for starters, the 5.0-litre twin-turbo V8 treated to a redesign of its intakes; better airflow means better power, and with a calibration upgrade to take full advantage, the Sadair’s Spear is now 1,300hp strong. Or makes 1,625hp (up from 1,600hp) for those that run it on E85. The gearbox is the same flywheel-less Light Speed Transmission.

With 35kg less weight as well - less sound deadening, more carbon, new seats, those incredible model-specific wheels - the Sadair’s Spear exceeds the 1:1 power-to-weight ratio that Koenigsegg has become famous for. On E85, at least. The Jesko weighed in at 1,420kg, so we’d assume this is under 1,400kg. Plenty enough for 1,300hp or so…

Additional alterations include ‘enhanced’ ceramic brakes with better pads, an overhauled suspension setup with lighter springs and redesigned Triplex dampers, plus even wider Michelin Cup 2R tyres. Even the oil cooling has been improved, Koenigsegg seems adamant that the 30 Spears it makes will be used very hard indeed. It’s said to be more than a second faster than a Jesko Attack at the Gotland Ring. Which is a three-minute lap, sure, but to go any amount faster with just the extra 20hp or so is very impressive.

Certainly there’ll be no mistaking the Sadair’s Spear for your common-or-garden Jesko, what with the dramatic new aero kit. The top-mounted, double-blade rear wing is probably the most obvious example of that, which works in cahoots with new strakes underneath and the wheel arch louvres for high-speed stability. Check out as well the new canards up front that are large enough to be hammocks, plus different vents in the bonnet. The front-end changes complement the suspension work to ‘deliver extraordinary steering feedback and dynamic handling.’

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.” All 30 are spoken for, and we’d expect cars to reach customers in 2026. After being seen at all the right summer shows in 2025, of course.