The Koenigsegg CCXR is a mid-engined

Mid-engine design

A mid-engine layout describes the placement of an automobile engine between the rear and front axles. Another term for this is mid-ship.-Benefits:The mid-engine layout is typically chosen for its relatively favorable weight distribution...

 roadster

Roadster

A roadster is a two-seat open car with emphasis on sporty handling and without a fixed roof or side weather protection. Strictly speaking a roadster with wind-up windows is a convertible but as true roadsters are no longer made the distinction is now irrelevant...

 from Swedish

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 car manufacturer Koenigsegg

Koenigsegg

Koenigsegg Automotive AB is a Swedish manufacturer of high-performance sports cars based in Ängelholm.-Company:The company was founded in 1994 in Sweden by Christian von Koenigsegg, with the intention of producing a world-class supercar...

. The CCXR is powered by a modified twin-supercharged

Supercharger

A supercharger is an air compressor used for forced induction of an internal combustion engine.The greater mass flow-rate provides more oxygen to support combustion than would be available in a naturally aspirated engine, which allows more fuel to be burned and more work to be done per cycle,...

 V8 engine from the CCX

Koenigsegg CCX

The Koenigsegg CCX is a mid-engined roadster from Swedish car manufacturer Koenigsegg. The CCX has been engineered to comply with the U.S. regulation and market demands and is a newer design that replaced the Koenigsegg CCR....

, converted to use E85

E85

E85 is an abbreviation for an ethanol fuel blend of up to 85% denatured ethanol fuel and gasoline or other hydrocarbon by volume. E85 is commonly used by flex-fuel vehicles in the US, Canada, and Europe. Some of the benefits of E85 over conventional gasoline powered vehicles include the potential...

 or E100 ethanol fuel

Ethanol fuel

Ethanol fuel is ethanol , the same type of alcohol found in alcoholic beverages. It is most often used as a motor fuel, mainly as a biofuel additive for gasoline. World ethanol production for transport fuel tripled between 2000 and 2007 from 17 billion to more than 52 billion litres...

 as well as standard 98 octane

Octane rating

Octane rating or octane number is a standard measure of the anti-knock properties of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating...

 petrol

Gasoline

Gasoline , or petrol , is a toxic, translucent, petroleum-derived liquid that is primarily used as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. Some gasolines also contain...

. Besides the use of ethanol fuel, the only changes to the engine are modified fuel injectors, upgraded fuel lines and piston rings

Piston ring

A piston ring is a split ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine.The three main functions of piston rings in reciprocating engines are:...

 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

Ethanol

Ethanol, also called ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol, is a volatile, flammable, colorless liquid. It is a psychoactive drug and one of the oldest recreational drugs. Best known as the type of alcohol found in alcoholic beverages, it is also used in thermometers, as a...

 in the engine's combustion chambers allowing for a higher pressure in the cylinder and the biofuel having a higher octane rating

Octane rating

Octane rating or octane number is a standard measure of the anti-knock properties of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating...

 of 113 RON compared to 95 RON for gasoline in North America and 100 RON for gasoline in Europe.

The designer of the CCXR, and founder of Koenigsegg, Christian von Koenigsegg

Christian von Koenigsegg

Christian Erland Harald von Koenigsegg is the founder of the Swedish high-performance automobile manufacturer Koenigsegg Automotive AB....

 is quoted as saying, "Our engineers couldn't quite believe the figures when we tested the car".

In March 2009 the CCXR was chosen by Forbes

Forbes

Forbes is an American publishing and media company. Its flagship publication, the Forbes magazine, is published biweekly. Its primary competitors in the national business magazine category are Fortune, which is also published biweekly, and Business Week...

 as one of the ten most beautiful cars in history.

Performance

The CCXR Edition can accelerate from 0–100 km/h (62.1 mph) in 2.8 seconds and from 0–200 km/h (124.3 mph) in 8.9 seconds. The CCXR can accelerate from 0–200 km/h (124.3 mph), then decelerate from 200 (120mph)–0km/h, in 13.7 seconds. According to Koenigsegg, the estimated top speed of the CCXR is 400+ 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 (62.1 mph)).

Engine

The Koenigsegg CCXR engine is a 4.7 litre 288 cubic inch V8, with dual overhead camshafts

Overhead camshaft

Overhead cam valvetrain configurations place the engine camshaft within the cylinder heads, above the combustion chambers, and drive the valves or lifters in a more direct manner compared to overhead valves and pushrods...

 and 4 valves

Poppet valve

A poppet valve is a valve consisting of a hole, usually round or oval, and a tapered plug, usually a disk shape on the end of a shaft also called a valve stem. The shaft guides the plug portion by sliding through a valve guide...

 per cylinder. The engine block is made of Aluminium alloy

Aluminium alloy

Aluminium alloys are alloys in which aluminium is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon and zinc. There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories...

 that has undergone a T7 heat treatment, a form of accelerated precipitation strengthening

Precipitation strengthening

Precipitation hardening, also called age hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminium, magnesium, nickel and titanium, and some stainless steels...

. The engine has a compression ratio of 8.8:1, is boosted by two Rotrex centrifugal superchargers

Centrifugal type supercharger

The centrifugal-type supercharger is an engine-driven compressor used to increase the power output of an internal-combustion engine by increasing the amount of available oxygen by compressing air that is entering the engine...

 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 a dry sump

Dry sump

A dry sump is a lubricating motor oil management method for four-stroke and large two-stroke piston internal combustion engines that uses external pumps and a secondary external reservoir for oil, as compared to a conventional wet sump system....

 system with a separate oil pump, the pistons are cooled by oil sprayed onto them and the oil itself has an external cooler.

The engine produces 1064 bhp at 7200 rpm and 782 lbft of torque at 6100 rpm on E100 ethanol fuel. The CCX engine burns 18 L/100 km on highway travel and 22 L/100 km on combined travel on E85 ethanol fuel.

Exterior

The CCXR is a two-door, two-seater with a removable hardtop that can be stored under the front hood lid allowing it to be changed at any location. The body, made of pre-impregnated carbon fiber and Kevlar

Kevlar

Kevlar is the registered trademark for a para-aramid synthetic fiber, related to other aramids such as Nomex and Technora. Developed at DuPont in 1965, this high strength material was first commercially used in the early 1970s as a replacement for steel in racing tires...

 with lightweight sandwich reinforcements, is 169 in (4,292.6 mm) long, 78.6 in (1,996.4 mm) wide and 44.1 in (1,120.1 mm) tall with a ground clearance of 3.94 in (100.1 mm).

The CCXR has a frontal area of 1.867 m² (2,893.9 sq in) and a drag coefficient

Drag coefficient

In fluid dynamics, the drag coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment such as air or water. It is used in the drag equation, where a lower drag coefficient indicates the object will have less aerodynamic or...

 of 0.33. The drag area (frontal area times drag coefficient) is 0.61611 m² (955 sq in). It also has a flat underside with venturi tunnels

Venturi effect

The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe. The Venturi effect is named after Giovanni Battista Venturi , an Italian physicist.-Background:...

 at the rear and an optional rear spoiler

Spoiler (automotive)

A spoiler is an automotive aerodynamic device whose intended design function is to 'spoil' unfavorable air movement across a body of a vehicle in motion. Spoilers on the front of a vehicle are often called air dams, because in addition to directing air flow they also reduce the amount of air...

 to improve aerodynamics. At 250 km/h (155.3 mph) there is 100kg of downforce

Downforce

Downforce is a downwards thrust created by the aerodynamic characteristics of a car. The purpose of downforce is to allow a car to travel faster through a corner by increasing the vertical force on the tires, thus creating more grip....

.

Transmission

The CCXR has a specially developed transversal six speed manual gearbox with an optional paddle-shift

Semi-automatic transmission

A semi-automatic transmission is an automobile transmission that does not change gears automatically, but rather facilitates manual gear changes by dispensing with the need to press...

 with a dual plate clutch of diameter 240 mm.

The power is fed to the rear wheels through a torque sensitive, limited slip differential

Limited slip differential

A limited slip differential is a type of differential gear arrangement that allows for some difference in angular velocity of the output shafts, but imposes a mechanical bound on the disparity...

. The gear ratio

Gear ratio

The gear ratio of a gear train is the ratio of the angular velocity of the input gear to the angular velocity of the output gear, also known as the speed ratio of the gear train. The gear ratio can be computed directly from the numbers of teeth of the various gears that engage to form the gear...

s of the CCXR can be seen in the table below.

Gear	1	2	3	4	5	6	Reverse	Final Drive
Ratio Gear ratio The gear ratio of a gear train is the ratio of the angular velocity of the input gear to the angular velocity of the output gear, also known as the speed ratio of the gear train. The gear ratio can be computed directly from the numbers of teeth of the various gears that engage to form the gear...	2.875:1	1.773:1	1.267:1	1.000:1	0.833:1	0.711:1	3.000:1	3.364:1

Wheels and brakes

The standard CCXR wheels are Koenigsegg's carbon alloy wheels. The front wheels have a diameter of 19 inches (482.6 mm) and thickness of 9.5 inches (241.3 mm), the rear wheels have a diameter of 20 inches (508 mm) and thickness of 12.5 inches (317.5 mm). Each of the wheels is attached by center locking wheel nuts. The car comes with Michelin

Michelin

Michelin is a tyre manufacturer based in Clermont-Ferrand in the Auvergne région of France. It is one of the two largest tyre manufacturers in the world along with Bridgestone. In addition to the Michelin brand, it also owns the BFGoodrich, Kleber, Riken, Kormoran and Uniroyal tyre brands...

 Pilot Sport 2 unidirectional tire

Tire

A tire or tyre is a ring-shaped covering that fits around a wheel rim to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground...

s with an asymmetric tread pattern. The front tires have codes

Tire code

Automobile tires are described by an alphanumeric tire code or tyre code , which is generally molded into the sidewall of the tire. This code specifies the dimensions of the tire, and some of its key limitations, such as load-bearing ability, and maximum speed...

 of 255/35 Y19 and the rear 335/30 Y20.

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

CCXR Edition

The Koenigsegg CCXR Edition is a limited edition of the Koenigsegg CCXR 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.

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. 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).

Only three CCXR Trevitas will be produced, making it the rarest vehicle manufactured by Koenigsegg.
All three cars will feature the Koenigsegg Shimmering Diamond Weave bodywork, double carbon rear wing, inconel

Inconel

Inconel is a registered trademark of Special Metals Corporation that refers to a family of austenitic nickel-chromium-based superalloys. Inconel alloys are typically used in high temperature applications. It is often referred to in English as "Inco"...

 exhaust system, carbon ceramic brakes with ABS, airbags, paddle-shift, chrono instrument cluster, infotainment system, tire monitoring system and a hydraulic lifting system.

Specifications comparison table

The following table compares the technical specifications of the CCXR, the CCXR Edition, and the CCXR Trevita. More accurate figures for the CCXR Trevita are expected to be released after the 2009 Frankfurt Motor Show.

Model	CCXR	CCXR Edition/Trevita
Performance	Acceleration: 0-100 km/h: 3.1 seconds 0-200 km/h: 8.9 seconds 0-200-0 km/h: 13.7 seconds Braking distance: 32m (100-0 km/h) Lateral G-force: 1.4 G	Acceleration: 0-100 km/h: 2.9 seconds 0-200 km/h: 8.75 seconds 0-200-0 km/h: 13.55 seconds 0-300-0 km/h: 27.8 seconds Braking distance: 32m (100-0 km/h) Lateral G-force: 1.5 G
Engine	Koenigsegg aluminium V8, 4 valves per cylinder, double overhead camshafts Displacement: 4700 cc Compression: 8.2:1 Sequential, multipoint fuel injection Twin Rotrex centrifugal superchargers with response system, 1.6 bar boost pressure Dry sump lubrication with oil spray piston cooling Power output: 1018 Bhp at 7200 rpm Maximum torque: 1060 Nm (740 ft/lb) at 6100 rpm	Koenigsegg aluminium V8, 4 valves per cylinder, double overhead camshafts Displacement: 4800 cc Compression: 8.2:1 Sequential, multipoint fuel injection Twin Rotrex centrifugal superchargers with response system, 1.6 bar boost pressure Dry sump lubrication with oil spray piston cooling Power output: 1018 Bhp at 7000 rpm Maximum torque: 1080 Nm (796 ft/lb) at 5600 rpm
Exterior	Drag coefficient: 0.33 Frontal area: 1.867m2 Total Downforce at 250 km/h: 100 kg	Drag coefficient: 0.36 Frontal area: 1.867m2 Total Downforce at 250 km/h: 350 kg
Transmission	Transversal 6-speed gearbox, with optional paddle-shift Clutch: Dual Plate, Ø 240 mm Final ratio: 3,364 1st gear: 2,875 2nd gear: 1,773 3rd gear: 1,267 4th gear: 1,000 5th gear: 0,833 6th gear: 0,711 Reverse gear: 3,000	Transversal 6-speed gearbox, with optional paddle-shift Clutch: Dual Plate, Ø 240 mm Final ratio: 3,364 1st gear: 2,875 2nd gear: 1,773 3rd gear: 1,267 4th gear: 1,000 5th gear: 0,833 6th gear: 0,711 Reverse gear: 3,000
Wheels and Brakes	Koenigsegg carbon alloy wheels with center locking Front Wheel: 19 inches (482.6 mm) X 9.5 inches (241.3 mm) Rear Wheel: 20 inches (508 mm) X 12.5 inches (317.5 mm) Front brakes: Ventilated ceramic discs Ø 380 mm, 34 mm wide. 8-piston light alloy Brembo monoblock calipers. Power-assisted. Rear brakes: Ventilated ceramic discs Ø 362 mm, 32 mm wide. 6-piston light alloy AP Racing callipers. Power-assisted.	Koenigsegg forged alloy wheels with center locking Front Wheel: 19 inches (482.6 mm) X 9.5 inches (241.3 mm) Rear Wheel: 20 inches (508 mm) X 12.5 inches (317.5 mm) Front brakes: Ventilated ceramic discs Ø 380 mm, 34 mm wide. 8-piston light alloy Brembo monoblock calipers. Power-assisted. Rear brakes: Ventilated ceramic discs Ø 362 mm, 32 mm wide. 6-piston light alloy AP Racing callipers. Power-assisted.