In case you're in a bit of a dilemma, and you don't know which one to buy, you should probably choose the Koenigsegg. Watch the vide to see why. The Koenigsegg Agera R hides under its cold Scandinavic skin a 5.0-litre V8 bi-turbo engine good for 900hp. The Ferrari 458 Italia is also powered by a 5-liter V8, but has an output of "only" 570 hp. Those extra 330 hp of the Agera R make all the drifference in the world.