The CCGT engine is based on the Koenigsegg CCX production engine with the superchargers removed and its capacity increased to 5.0 L to compensate for the loss of power [REF].
As the car was just being finished the FIA GT1 regulations were changed so that there had to be a minimum of 350 road cars produced per year of the model that was to compete, something that Koenigsegg was unable to achieve, prohibiting the CCGT from racing [REF].