Both two-door G models get the same engine that powers the G37 Sedan, only here it makes 330 horsepower. It revs enthusiastically (and with a growl) up to 7,500 rpm and works well with either the precise six-speed manual gearbox or the seven-speed automatic, which includes magnesium paddle-shifters with the Sport package. The dash to 60 mph takes just 5.5 seconds in the Coupe, or about six seconds for the Convertible, because of the extra 450 pounds of folding hardtop it carries.
One model that especially stands out from a performance perspective is the G37x Coupe AWD, which utilizes Infiniti's ATESSA E-TS all-wheel-drive system found on other Infiniti models. It's an excellent system that's proactive and helps maximize stability when cornering.
The seven-speed automatic is more enjoyable than most, as it responds quickly to the paddle-shifters and provides throttle blips for seamless downshifts; in more easygoing driving it can be a little more lumpy and indecisive, though.