Koenigsegg One:1

Koenigsegg One:1 1.1

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Modelling: moringaou, Jadonyx
Textures: Legende_TLM, moringaou, After_Midnight
Physics: CCX
Sounds: NeverKrash
Factory Test Driver: Nick Moxley
Instrument design: Fillipo94
Special thanks to: Nick Moxley, misterbeam, burrito, Avoletta and mclarenf1papa for their great help with improving the physics, the_meco for his assistance with the export of the model into AC and Modek for his assistance.


Koenigsegg is creating six uniquely developed and designed production cars – the One:1 program.
This is one of the most exclusive production car programs ever envisaged.
The hp to kg curb weight ratio is an astonishing 1:1. This is the “dream” equation previously thought impossible. On top of this, the One:1 is the first homologated production car in the world with one Megawatt of power, thereby making it the world´s first series produced Megacar.
These are the reasons for naming the car One:1.

The 2014 One:1 truly raises the bar of performance. The One:1 features new and unique solutions to enhance track performance without compromising top speed or everyday usability, with a stunning visual appearance to go with it.

Examples of features; unique track optimized aero winglets, extended venturi tunnels and side splitters, Le-Mans inspired active wing configuration and optimized active undertrim air management. Large air vents for improved cooling, roof air scoop to support the 1 Megawatt of power, 8250 RPM rev limit, complemented with Custom made Michelin Cup Tires, upgraded rear triplex suspension with carbon bevel springs and active shock absorbers and ride height, combined with upgraded revolutionary Koenigsegg Aircore carbon fiber wheels.

Koenigsegg was the first extreme car manufacturer to take steps toward green technology with the release of the biofuel CCXR in 2007. The One:1, a sibling of the highly competitive Agera R, follows in the footsteps of the CCXR as it also runs on E85 biofuel, race fuel or normal gasoline.

In order to give the One:1 maximum flexibility when it comes to power delivery, Koenigsegg has implemented its patented variable turbo geometry technology in the One:1 program. This technology gives improved response and more low-end torque than otherwise possible. As an example the One:1 engine has over 1000 Nm of torque between 3000 to 7500 rpm, which is truly unheard of.

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Latest reviews

bruh this jank is impossible to dribve but still looks cool
One of the most intense cars I've driven on Assetto. You really think twice before using full throttle without TC.
love it nice. no sound when the replay, why?
It's not bad, it's just the audio could be a tad better, other than that not bad
Would be great but the tires never get up to temp even at lowest pressure.
I only give it 4 stars, it deserves 5, but when you change cameras, the sound goes away but it's pretty good
The mod has no exterior sounds, the exhaust flame and smoke are not placed correctly and the interior is poorly made, textures are colliding with the others (things appear and disappear - most obvious within the dashboard, the stripe on the door and the "One:1" logo on the board).
amazing design and really fun to drive
Fun to drive. Great mod.
Amazing feel and sounds on the interior and hood, but for some reason 3rd person camera angles do not have any sound. For me, it is no problem since I am driving in the seat anyways, but weird none the less.
Gracias y gran trabajo ¡¡¡¡¡
Fun great job
very cool
It was once awesome but if you use assetto corsa car tuner you can give it more downforce etc. yourself to make it more like it was before !
It's sad to see the only good mod of powerhouses like this go. This thing was so much fun to drive when this was up to date
Any other version plz?
No engine sound using the external cam, very floaty at high speeds, extremely poor level of downforce, extreme understeer at all speeds. I don't know if this car has such terrible level of downforce and mechanical grip(worse than a 570s sports car) irl, but I don't think it does.
Updates have ruined the physics and they won't be updated I'm afraid as I no longer have the time/motivation.

Latest News

File size
96.5 MB
First release
Last update
User rating
4.62 star(s) 52 ratings