- A rare Koenigsegg One:1 megacar will be auctioned on July 4, 2026.
- The pre-auction estimate is pegged at between $9 and $12 million.
- The Koenigsegg One:1 is the world’s first megacar, delivering one megawatt of power.
Some cars become famous for performance; Others go down in history for changing the approach to engineering. The Koenigsegg One:1 fits into both categories.
More than a decade after its debut, one of the extremely rare examples produced by the Swedish automaker is set to return to the spotlight at RM Sotheby’s Tegernsee on July 4, 2026. The car could fetch an estimated €8 million to €10 million ($9 million to $11.5 million).
The car in question is a 2015 One:1. Koenigsegg built only six cars for private customers. It is a model that represents one of the most important chapters in the history of Koenigsegg and the modern hypercar era as a whole.
Photo by: RM Sotheby’s
First ‘Megacar’
When the One:1 debuted at the 2014 Geneva Motor Show, the supercar world was locked in a constant arms race for horsepower and top speed. However, Christian von Koenigsegg chose a different path, focusing on the efficiency of the overall concept.
The result was a car capable of producing 1,341 horsepower from a twin-turbocharged 5.0-liter V8, while weighing only 2,998 pounds dry. This is where the name One:1 comes from, which refers to the perfect power-to-weight ratio. Not only that: peak output was equal to one megawatt, a detail that led the company to call it the first “megacar” ever built.
Even today, the numbers are staggering. According to period claims, the One:1 could accelerate from 0 to 249 mph in approximately 20 seconds, and it was fitted with tires capable of a top speed of 273 mph.
Photo by: RM Sotheby’s
The One:1 was not defined solely by its power-to-weight ratio. The program included cutting-edge technological solutions for its time – some of which remain standards today.
Highlights include active aerodynamics, Koenigsegg’s TripleX suspension system, AirCore carbon-fibre wheels, variable-geometry turbochargers and a sophisticated seven-speed dual-clutch transmission. The goal was maximum performance without compromising driving precision and stability at very high speeds.
The engineering approach taken by the Swedish manufacturer helped turn the One:1 into one of the most advanced hypercars of its generation, foreshadowing solutions that would later become common in the most exclusive models.
Photo by: RM Sotheby’s
‘Jesse’ version
The car is being offered At RM Sotheby’s The Tegurnsey auction on July 6, 2026Identified by chassis number 7108 and considered one of the most famous One:1s in existence. Known among enthusiasts by the nickname “JC” – also shown on the engine cover – it is said to have been the third unit delivered to a private customer.
The body features exposed carbon fiber and Kevlar protected by a clear finish, accented with details in a distinctive shade called China Pink. This color highlights several exterior elements, including the front splitter, side skirts, side intakes, rear diffuser and the impressive active wing.
The cabin also has the same theme. Black leather and Alcantara are paired with custom pink stitching and trim accents, while carbon-fiber bucket seats underline the extreme intentions of the project.
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Source: RM Sotheby’s
A low-mile collector car
Delivered new in April 2015 through German dealer Essar Automotive, this car has a documented history and has been regularly serviced by authorized specialists. At the time of listing, the odometer showed only 2,630 miles.
Beyond its extreme rarity, the next owner will also have access to Ghost Squadron, Koenigsegg’s private customer community that organizes special events, factory tours and owner celebrations.
With only six examples built and a long-built reputation among hypercar enthusiasts, the One:1 now represents much more than a high-performance automobile. It marks the moment when Koenigsegg redefined the boundaries of automotive engineering – creating a car that remains one of the most remarkable cars of the 21st century. We will see whether it sells or not and for how much.
motor1 tech: A limited-edition model from a company that only makes low-volume cars will undoubtedly attract big bucks at auction. This is a rare opportunity to buy a Koenigsegg without having to wait months or years for a new model to be produced. Add in the fact that this is the One:1, the world’s first megacar, and we can see that the pre-auction estimate will be easily surpassed.
