Prepare to be impressed

We’re back on the topic of Koenigsegg’s radically-looking Jesko Absolut. With all the specs out of the bag, here’s still something we don’t know about the Absolut. And that something is its top speed.

When Koenigsegg dropped the Jesko Absolut online, it was clear about one thing: the Absolut would be the carmaker’s fastest supercar ever as the company “will never endeavor to make a faster series-production road car – ever.” Alright, but just how fast is the new Koenigsegg Jesko Absolut? Well, Koenigsegg’s estimates say 330 mph is theoretically possible, and now here comes Engineering Explained to clear the air for us.

How Fast is the Koenigseg Jesko Absolut?

First, let’s stick to the details Koenigsegg released on the Jesko Absolut. For starters, it sports a drag coefficient (Cd) of 0.278. That was possible through more than 3,000 hours spent in fluid and aerodynamic analysis topped up by another 5,000 hours of design and engineering.

As you all know, the Jesko Absolut doesn’t have a huge rear wing. Instead, it flaunts two rear hood fins that boost stability. Since the wing is gone, downforce has dropped from 1,400 kilos (3,086 pounds) to 150 kilos (330.7 pounds).

The Absolut is also 85 mm longer and sports dished rear wheels, as well as a re-tweaked twin-turbo V-8 that now revs up to 8,500 rpm and churns out 1,500 Newton-meters (1,106 pound-feet) of torque.

Power stays the same, at 1,600 horsepower (on E85 fuel) and Koenigsegg also operated suspension tweaks to cater for travelling at high speeds.

2021 Koenigsegg Jesko Absolut
- image 890113
1,600 horsepower from a twin-turbo V-8

Now, scientifically speaking, although the lower drag coefficient plays a huge role in raising the Jesko Absolut’s top speed, it is, in fact, down to more factors such as powertrain efficiency (the amount of power that leaves the engine versus the amount of power that actually reaches the asphalt), the force of aero drag, and the force of rolling resistance.)

Furthermore, the force of aero drag is defined by the air’s density and the frontal area of the vehicle. Then you have to take into account the mass of the car and the amount of downforce it actually produces.

Math Shows Us How Fast the Koenigsegg Jesko Absolut Could Be
- image 891954

So, to answer the question, after doing all the calculations, Jason Fenske came up with a potential top speed for the Jesko Absolut: 148 m/s. That’s 331 mph, or 533 kph.

That value, believe it or not, falls in line with what Christian von Koenigsegg revealed in an interview with Road & Track, by saying that “if you run the numbers, you take the frontal area, the Cd, the power, the gear ratio, the power curve… the simulations say 532 km/h (330 mph), or something like that.” Wow.

Koenigsegg Jesko specifications
Engine Koenigsegg twin turbo aluminium 5,0L V8, 4 valves per cylinder, flat-plane crankshaft, double overhead camshafts, dry sump lubrication
Compression: 8.6:1
Bore: 92 mm Stroke: 95.25 mm
Sequential, multipoint fuel injection with individual cylinder pressure sensors and back pressure sensors
Closed loop individual combustion and lambda control, twin ceramic ball bearing turbo chargers with Koenigsegg response system.
1.7 bar boost pressure (2.2 bar with E85)
Dry sump lubrication. Carbon fiber intake manifold with optimised intake tracts
Tig-welded ceramic coated 0.8 mm wall thickness inconel exhaust system manifold with merge collector
Total engine weight: 189 kg
OUTPUT Gasoline: 955 kW (1280 hp) at 7800 rpm, redline at 8500 rpm.
E85: 1195 kW (1600 hp)
Torque: 1000 Nm from 2700 to 6170 rpm
Max torque: 1500 Nm at 5100 rpm
Tudor Rus
Assistant Content Manager - Automotive Expert - tudor@topspeed.com
Tudor’s first encounter with cars took place when he was only a child. Back then, his father brought home a Trabant 601 Kombi and a few years later, a Wartburg 353. At that time, he was too young to know how they worked and way too young to drive them, but he could see one thing – each of them had a different ethos and their own unique personality. As time went on, he started seeing that in other cars as well, and his love for the automobile was born.  Read More
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