The Koenigsegg CCX is a mid-engined roadster from the Swedish car manufacturer Koenigsegg. 

The CCX has been engineered to comply with the U.S. regulation and market demands and is an evolutionary design that replaced the Koenigsegg CCR.

CCX is an abbreviation for Competition Coupe X, X commemorating the 10th anniversary of the completion and test drive of the first CC vehicle in 1996.

The CCX was first unveiled on February 28, 2006 at the 2006 Geneva Motor Show although its existence was announced earlier.

 A derivative known as the CCXR is available, the main difference being that CCXR's engine is tuned to run on biofuel. The different fuel and tune allows the CCXR to produce 25% more power than the CCX

Performance

The CCX can accelerate from 0–62 mph (100 km/h) in 3.2 seconds and from 0–124 mph (200 km/h) in 9.8 seconds.According to Koenigsegg it has a top speed of 259 mph (417 km/h), although this has not been officially verified. On 15 June 2008, a standard fully equipped CCX was independently timed by sport auto in achieving a record 0-186-0 mph (0-300-0 km/h) in 29.2 seconds.