Our editors haven't yet driven the G25, which is being offered as both a price leader for the sport-sedan line as well as a slightly more fuel-efficient option, we've spent lots of time in the G37 Sedan. It's one of the most responsive, communicative, and fun-to-drive sport sedans in its class. Infiniti's 3.7-liter V-6 makes more muscle than some rival V-8s and provides enough thrust to satisfy most rabid performance enthusiasts, though it's a little more raucous than the former 3.5-liter and not nearly as smooth as BMW's excellent turbocharged six in the 335i.
While shift quality with the seven-speed automatic transmission in the 2011 Infiniti G37 Sedan (the only transmission in the G25) is somewhat lumpy and indecisive in gentle driving, it becomes snappy and smooth when accelerating hard—and seems more at home when driving aggressively, with a satisfying throttle blip delivered when managing shift with the solid magnesium paddle-shifters (included on G37 Journey and G37x AWD models). Otherwise, the six-speed manual in the G37 is very satisfying.
The G is quite possibly the best-handling sport sedan, price no object. Even on less-than-perfect surfaces, the suspension is hard to fluster and brakes are stout. And with great steering feel and near-perfect dynamics, and that provides both reassuring safety and poise on the road, as well as thrills for those who pay for track time.