It included numerous changes over the original car such as a clear coated carbon fibre body with candy red accents, red and black bi-colour interior with Koenigsegg Revo embroidered on the passenger side of the dashboard along with a fire extinguisher and an updated steering wheel, CCX rear diffuser, side skirts, fog lights, front splitter and wheels along with the twin-deck F1 rear spoiler found on the CCXR.

They said CCR was originally yellow but had already received upgrades from the factory such as Silver exterior paint and 11-spoke CCX wheels, front splitter and side skirts, as well as the Top Gear rear spoiler in 2008.

The six speed gearbox was disassembled in its entirety and the plastic bushings were replaced with Uniball units resulting in the improved drive ratio.

The interior of the Koenigsegg was then covered in Alcantara material and a redesigned center console was added to accommodate a new infotainment system with a reversing camera and a custom-made pouch for the immobilizer remote.

Said claim was put to test on February 28, 2005, at Italy's Nardò Ring where a team of five Koenigsegg engineers and mechanics together with founder Christian von Koenigsegg ran a standard CCR, driven by Loris Bicocchi to a top speed of 387.87 km/h (241.01 mph), breaking the fastest production car record (if "production car" is defined accordingly).