Koenigsegg Regera

The Koenigsegg Regera is a limited production, plug-in hybrid grand touring sports car manufactured by Swedish automotive manufacturer Koenigsegg. It was unveiled at the March 2015 Geneva Motor Show. The name Regera is a Swedish verb, meaning "to reign" or "to rule". Koenigsegg produced 85 Regeras, most of which were sold upon unveiling.

The Regera was developed and designed to be a more practical, luxurious, grand touring alternative to the rest of Koenigsegg's lightweight sports car lineup: initially the Agera and later the Jesko. Consequently it is focused on the smooth and instant delivery of power provided by its overhauled powertrain, rather than on-track performance.

The introduction of the Regera alongside the Agera RS in 2015 resulted in Koenigsegg for the first time simultaneously having two models in production. This role was passed from the Agera to the Jesko in 2019, which briefly shared the production line with the Regera when Jesko production began in late 2021.

Koenigsegg founder Christian von Koenigsegg purchased a Tesla Model S P85+ in 2013 and was impressed by the car's ability to instantly deliver power without the need for a downshift or to wait out turbo lag. He was especially impressed with the direct and intuitive experience provided by an electric car like the Tesla, remarking that the instantaneous response of the motors was something even a Formula One car could not attain with a traditional internal combustion engine. Von Koenigsegg sought to combine this desirable aspect of electric powertrains with the traditional Koenigsegg experience of a lightweight, powerful sports car.

Realizing some form of compromise was necessary, von Koenigsegg decided to look to a hybrid solution. By removing the traditional 7-speed dual-clutch transmission and switching to a single-gear direct-drive system, Koenigsegg mitigated the added weight of the three electric motors and a 4.5 kW·h battery pack installed in the Regera as compared to the previous Agera models.

The Regera was designed with a combination of the CATIA software suite and Autodesk Inventor, with AutoCAD Electrical being primarily used to redesign the vehicle's electrical systems from past Koenigsegg models. According to Koenigsegg Technical Director Jon Gunner, the Regera makes use of several power nodes to connect wiring throughout the car compared to the single power node of previous models, which saves weight.

Koenigsegg uses 3D printing technologies to manufacture many parts of the Regera. This includes static components like details in the interior of the car under the upholstery and the large electrical exhaust port at the rear of the car, as well as dynamic components like the variable-geometry turbocharger in the engine. This manufacturing technique allowed Koenigsegg to better tune airflow through the turbochargers and achieve a more complex inner housing shape which was impossible with conventional methods.

The Regera was used by NVIDIA to introduce Project Holodeck, a virtual reality environment capable of importing and manipulating high-detail 3D models. This technology was used by Koenigsegg engineers to collaborate on design ideas in real-time and could allow customers to experience their custom made vehicle in VR before it is purchased or built.