Exotic Supercars: Koenigsegg CCXR

The Koenigsegg CCXR is a mid-engined roadster from Swedish car manufacturer Koenigsegg. The CCXR is powered by a modified twin-supercharged V8 engine from the CCX, converted to use E85 or E100 ethanol fuel as well as standard 98 octane petrol. Besides the use of ethanol fuel, the only changes to the engine are modified fuel injectors, upgraded fuel lines and piston rings, and a higher boost setting on the superchargers. The increased power of the CCXR, compared to the CCX, is a result of the cooling properties of ethanol in the engine's combustion chambers allowing for a higher pressure in the cylinder and the biofuel having a higher octane rating of 113 RON compared to 95 RON for gasoline in North America and 100 RON for gasoline in Europe.

Engine

The engine produces 1,064 bhp (793 kW; 1,079 PS) at 7,200 rpm and 782 lb·ft (1,060 N·m) of torque at 6,100 rpm on E100 ethanol fuel. The CCX engine burns 18 L/100 km (16 mpg_-imp; 13 mpg_-US) on highway travel and 22 L/100 km (13 mpg_-imp; 11 mpg_-US) on combined travel on E85 ethanol fuel.The Koenigsegg CCXR engine is a 4.7 litre 288 cu in (4,719 cc) V8, with dual overhead camshafts and 4 valves per cylinder. The engine block is made of Aluminium alloy that has undergone a T7 heat treatment, a form of accelerated precipitation strengthening. The engine has a compression ratio of 8.8:1, is boosted by two Rotrex centrifugal superchargers that provide 1.6 bar of boost, having a patented response charge system for optimal engine response, and is injected by a sequential multipoint fuel injection system. The engine is lubricated with adry sump system with a separate oil pump, the pistons are cooled by oil sprayed onto them and the oil itself has an external cooler.

Wheels and brakes

The standard CCXR wheels are Koenigsegg's carbon alloy wheels. The front wheels have a diameter of 19 inches (480 mm) and thickness of 9.5 inches (240 mm), the rear wheels have a diameter of 20 inches (510 mm) and thickness of 12.5 inches (320 mm). Each of the wheels is attached by center locking wheel nuts. The car comes with Michelin Pilot Sport 2 unidirectional tires with an asymmetric tread pattern. The front tires have codes of 255/35 Y19 and the rear 335/30 Y20.

The power-assisted front ventilated ceramic disc brakes are 380 mm across with 34 mm of contact at any point and have 8-piston light alloy Brembo calipers. The power-assisted rear ventilated ceramic disc brakes are 362 mm across with 32 mm of contact at any point and have 6-piston light alloy AP Racing calipers.

Performance

The CCXR Edition can accelerate from 0–100 km/h (0–62 mph) in 2.7 seconds and from 0–200 km/h (0–120 mph) in 8.9 seconds. The CCXR can accelerate from 0–200 km/h (120 mph), then decelerate from 200–0 km/h (120–0 mph), in 13.7 seconds. According to Koenigsegg, the estimated top speed of the CCXR is 402+ km/h (250+ mph), although this has not been officially verified. The braking distance of the CCXR is 32 m (when decelerating from 100 km/h (62 mph).

Special versions

CCXR Trevita

The CCXR Trevita is a limited edition of the Koenigsegg CCXR Edition featuring a diamond weave carbon fibre finish. Trevita is an abbreviation in Swedish and translates into - three whites. Up until the development of the CCXR Trevita, it has only been possible to utilize the classic black carbon fibres.^[8]The Koenigsegg Proprietary Diamond Weave, fully developed by Koenigsegg, is a new and unique method to manufacture the carbon fibre material for the CCXR Trevita. By utilising this new and unique method, Koenigsegg has managed to coat fibres with a diamond finish. The process was fully developed at Koenigsegg headquarters in Ängelholm Sweden, where the fibre treatment is conducted carefully in small quantities, prior to further processing the prepreg material. The car is the world's most expensive streetlegal supercar by far, it has a total price of US $4,850,000 (€3,400,000 or 35,000,000 Swedish krona).

CCXR Edition

The Koenigsegg CCXR Edition is a limited edition of the Koenigsegg CCX manufactured in 2008. The Koenigsegg CCXR Edition is only available by special order in a very limited run of 6 production models.

It has a clear, fully visible unpainted carbon fiber body. The forged, machined and polished aluminium Edition wheels are extremely light and incorporate optimum brake cooling. The bright, polished surface of the wheels was chosen to maximize the contrast against the black clear carbon body. The CCXR Edition has a high performance specially developed rear wing, a larger front splitter plus side front strakes.