The Koenigsegg CCX is a mid-engined sports car built by Koenigsegg Automotive AB. The project began with the aim of making a global car, designed and engineered to comply with global safety and environment regulations, particularly to enter the United States car market. To sell cars in the US many alterations were made to the design of the CCR; the previously used Ford Modular engine was replaced by a Koenigsegg engine designed to run on 91 octane fuel, readily available in the United States, and to meet the Californian emission standards.
The name CCX is an abbreviation for Competition Coupé X, the X commemorating the 10th anniversary of the completion and test drive of the first CC vehicle in 1996.
The CCX was unveiled at the 2006 Geneva Motor Show, sporting body modifications to meet US regulations and a new 4.7 L twin supercharged V8 engine capable of producing 806 PS at 7000 rpm and 920 N·m at 5700 rpm of torque while running on 91 octane gasoline. There were 14 CCXs produced between 2006 and 2010.
The new engine is of all aluminum construction, made out of 356 aluminum with a T7 heat treat to further enhance block integrity and cylinder bore chill during casting. Specifically created and cast for Koenigsegg by Grainger & Worrall, a casting specialist with F1 experience in drivetrain components, the engine is built, assembled and tested at their Ängelholm production plant. The engine is lubricated with a dry sump system with a separate oil pump and the pistons are cooled by means of an internal cooler that sprays oil onto them in order to run high cylinder pressure with 91 octane fuel making it capable of 14 mpg in combined cycle and 18 mpg in highway travel. Available transmissions are a Cima 6-speed manual and a 6-speed automated manual. Power is fed to the wheels through a torque-sensitive limited slip differential.
The chassis is made from carbon fiber reinforced with kevlar and aluminium honeycomb like previous models and while the body keeps the targa top body style and the "dihedral synchro-helix" actuation doors it is completely reworked, there is a new front bumper design, enhanced brake cooling, fog lamps, US position lights, a new fresh air intake on the bonnet that acts as ram air booster, air intakes behind the front wheels to enhance airflow and a glass window over the engine.
The CCX has frontal area of 2,894 sq in and a drag coefficient of 0.30., with a CdA of 0.56 m2 It also has a flat underside with venturi tunnels at the rear and an optional rear spoiler to improve aerodynamics. At 200 km/h there is 60 kg of downforce over the front axle and 65 kg over the rear. The car is 88 mm longer to comply with the US rear impact regulations and to free space around the rear muffler. On the interior side, there is 51 mm of extra headroom as well as specifically designed Sparco carbon fiber seats.
First in the industry carbon fiber wheels are optional equipment, 3 kilograms lighter than the standard forged alloy wheels, both using center locking nuts. Diameter is 19 inches at the front and 20 inches at the rear equipped with 255/35 Y19 front, 335/30 Y20 rear Michelin Pilot Sport 2 tires, 8 piston caliper carbon ceramic brakes measuring 380 mm in diameter at the front and 6 piston caliper 362 mm at the rear are optional, saving another 2 kilograms of unsprung weight.
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