Keeping in mind that the 2013 Nissan GT-R is first and foremost a high-performance vehicle, and not necessarily a luxury coupe, it's quite well stocked with comfort features and gadgets.
There are two models offered for 2013: the GT-R Premium and the Black Edition. Black paint and black-tipped RAYS 20-inch wheels, plus a carbon-fiber spoiler are what distinguish the Black Edition on the outside, along with red-and-black Recaro seats and dark interior trim.
Leather seats are included in all models, though; so is a hard-drive-based navigation system with stealth-fighter-style 3D flyover mapping, and an 11-speaker Bose sound system with a USB port. Bluetooth phone connectivity and streaming audio are also part of the system.
The GT-R's videogame-style performance gauges are pretty much a feature in themselves. Tap the screen, and the GT-R reveals a set of digital gauges that let drivers record how they're performing, whether it's grip, acceleration, or elapsed times. It's customizable, too, and Nissan even hired designers who worked on Sony's Gran Turismo game to help render the interface. If it sounds gimmicky, it's not--it's an apt piece of tech for a car so Corvette-fryingly capable.
The only option otherwise on the 2013 GT-R is a Cold Weather Package, which wraps a special coolant mix with Dunlop all-season tires.