Inside Line has learned from an unnamed high-ranking source within Nissan that Infiniti will launch a turbocharged version of its popular G sedan in the fall of 2010. The entry-level model will be called the G25 and will use the same turbocharged 2.5-liter V6 Nissan uses in the Japan-market Skyline 250GT (The Infiniti G is sold in Japan as the Nissan Skyline.)
At launch, the smaller turbo engine will be in the G sedan only and be sold alongside the naturally aspirated V6-powered G37. The idea is that the lower entry price and improved fuel economy of the turbocharged engine will give Infiniti more head-on competition for the popular BMW 328i.
In Japan the turbocharged engine is rated at 210 horsepower and 195 pound-feet of torque, which is competitive with the 3.0-liter inline-6 in the BMW, which is rated at 230 hp and 200 lb-ft.
As of now, a G25 coupe and convertible are not planned, but if sales are brisk on the G25 sedan, both will happen.