Going with the G25 doesn't give up much, other than 110 horsepower and a lot of torque. Base models, whether G25 or G37, get standard leather upholstery, power front seats, automatic climate control, a six-speaker audio system, and XM satellite radio.
The Journey model adds a Bluetooth hands-free interface, a rearview monitor, and heated seats and mirrors, plus dual-zone climate control. From the Journey, you can add any number of tech options, including Adaptive Front Lighting and the Intelligent Cruise Control with a Preview Braking safety feature.
An audiophile Infiniti Studio on Wheels system by Bose is optional, as is an optional next-generation hard-drive-based navigation system with higher-resolution screen, Zagat restaurant ratings and reviews, XM Weather and XM NavTraffic, and live rerouting. Also available is a new Advanced Climate Control System (ACCS), which purifies inside air and automatically shuts off outside air when exhaust fumes are detected.
Infiniti G37 Sedan Sport models are focused toward the most demanding enthusiast customers—and probably those who plan track time—so they include a Viscous Limited Slip Differential, in addition to a host of track-worthy upgrades like larger vented disc brakes, sport steering gear, W-rated performance tires, and more aggressively bolstered sport seats with active head restraints and thigh extensions.