As far as performance goes, Koenigsegg have kept the same 4.7 liter V8 developed in previous cars, this time there is 910hp at the 6850rpm-redline. Torque hits 1100Nm at 5100rpm. Thanks to a dry weight of 1290kg (2832lbs), the Agera manages to reach 100km/h (62mph) in 3.1 seconds and 200km/h (124mph) in 8.9 seconds. Top speed is estimated at 390+ km/h (245+ mph). As far as the exhaust system for the Agera goes, an Inconell system is being used, shared with the Trevita revealed last year. Coupled to all this is the Koenigsegg-engineered transversal, paddle-shift transmission with limited slip differential.
The chassis is manufactured from carbon fibre with aluminum honeycomb with integrated fuel tanks for optimal weight distribution and safety. The advantages of this also include the fact that the whole chassis weighs just 72kg. Adjustable suspension is included to help the car get over speed bumps and uneven surfaces without damaging body work.
http://www.gtspirit.com/2010/02/26/exclusive-koenigsegg-agera/