Nissan GT-R (Japanese) -
3.8L Twin-Turbo V6 producing
543BHP
BMW M5 (German) -
4.4L Twin Turbo V8 producing
560BHP
Ford Mustang (Shelby GT500 (2011)) -
5.4L V8 Producing
500bhp (But to be fair, the Chassis and suspension on Mustangs might as well be made from concrete)
Fastest Cars In The World: Top 10 List 2012-2013
Oh look, all european cars
Though, admittedly the Hennessey has an engine assembled in Texas (But tuned in England)
Forgot to mention interiors, Cheap plastic is not the way to go, someone should tell Ford that.