Britain goes against Italy in a supercar battle. The new Jaguar XKR-S Convertible and the Ferrari 458 Italia compete in a head-to-head battle on the race track. The Jaguar XKR-S Convertible has a 550PS 5.0-litre supercharged V8 engine that's able to take it from nought to 62 mph (100 km/h) in 4.4 seconds. On the other side, the Ferrari 458 Italia has a 570 hp 5.0-liter V8. The 458 can get from zero to 62 mph (100 km/h) in 3.4 seconds, which is 1 second faster than the Jag.