According to the British rumormongers, the Infiniti-badged GT-R will be stretched to accommodate the extra set of doors, making the wheelbase longer and giving it a more comfortable ride. However, the GT-R's twin-turbo 3.8-liter V6 won't be used. Instead, the FX50's 5.0-liter V8 will be mated to the same all-wheel-drive system and rear-mounted twin-clutch gearbox as its Nissan counterpart. Output is pegged at 420 hp with a 0-60 time of five seconds and a top speed of 170 mph.
While we're suitably skeptical about any mention of a four-door GT-R, this could be the long-rumored replacement for Infiniti's Q, taking the fight to the BMW M5 and Mercedes-Benz E63.