The Infiniti G37 represents an entire line of sports sedans, sport coupes and convertibles. Essentially luxurious versions of the Nissan Z, all excel at driving dynamics. And all are powered by Nissan’s 3.7-liter V6, an engine with a distinctive sound that revs freely and puts out a lot of power.

The G37 interior is lively and friendly without being fussy or overly busy. The overall quality of the passenger cabins has increased with this latest generation, and they’re much better suited to the luxury class than they once were. The G37s are priced lower than some European competitors, with more standard equipment. They’re a great place for performance-minded buyers to start shopping.

For 2009, there are lots of significant updates across the G37 line. All models are now equipped with a new, larger 3.7-liter V6 introduced in the G37 Coupe for 2008, and horsepower increases across the line. The standard automatic transmission has been upgraded from five to seven speeds, and EPA mileage ratings increase one mpg city, two mpg highway as a result. The Coupe is now available with full-time all-wheel-drive, offering buyers in tough-winter climates an extra element of mobility, security and safety.

The Infiniti G37 is available as a four-door sedan, two-door coupe or two-door convertible, in a total of 10 different variations. All are powered by the same 3.7-liter V6, with either a new seven-speed automatic or six-speed manual transmission. Fulltime all-wheel-drive is available on the sedan and coupe.

The G37 Sedan comes with leather seats, automatic temperature control, cruise control, an eight-way power driver’s seat, six-speaker AM/FM/CD audio with auxiliary input, keyless entry and starting, HID bi-Xenon headlights and 17-inch aluminum wheels with all-season tires. The 3.7-liter V6 delivers 328 horsepower and 269 pound-feet of torque in the sedan.