The Infiniti G has been a highly regarded sedan since its inception for the 2003 model year. However, whether in G35 or G37 guise, in contrast to its Japanese siblings, it has always been offered with the choice of only one engine. This fact has been changed for 2011, with the addition of the Infiniti G25 sedan, which joins the Infiniti G37 sedan, coupe and convertible.
The new 2011 Infiniti G25 Sedan features the same dynamic exterior, interior and chassis as the G37, but with a smaller displacement engine. The 2.5-liter DOHC 24-valve V6 produces 218 horsepower and comes mated to a 7-speed automatic transmission. Both rear-wheel drive and an intelligent all-wheel drive (ATTESA-ETS) shared with the Nissan GTR are available. All models come with 17-inch aluminum-alloy wheels, ABS and electronic stability control (VDC) with traction control.
Three G25 Sedan models are offered: the rear-wheel-drive G25 and G25 Journey, as well as the all-wheel-drive G25x.
The Infiniti G25 Sedan shares its visually striking exterior design with the stronger G37 sedan. The front of the G25 sedan is highlighted by its iconic headlight and grille design, which offer a crisp form and high quality feel. Standard fog lights are located in the lower fascia, where they help provide an upscale and distinctive appearance. All G25 models offer standard High Intensity Discharge (HID) bi-functional xenon headlights.
The silhouette offers a wedged roofline and a sweeping bodyside character line that emphasizes both the rich shoulder surfaces and the G’s rear-wheel drive orientation. In the rear, the refined, evolutional L-shaped LED taillights offer reminiscences to the original 2003 Infiniti G35, while the trunk lid is accented by an integrated chrome spoiler with prominent dual exhaust outlets completing the sporty appearance.
The Infiniti G25 offers a comfortable environment with a long list of standard or available luxury features, such as standard leather-appointed seating, “Shodo” aluminum trim inspired by a style of Japanese calligraphy, 8-way power driver's seat and 4-way power front passenger's seat, automatic air conditioning, six-speaker audio system, keyless entry, and XM Satellite Radio. G25 Journey models also include a RearView Monitor, heated front seats, heated outside mirrors, auto on/off headlights and dual-zone automatic air conditioning.
The driver’s area has a simple, intuitive layout with easy-to-read electroluminescent gauges. A center information display, located between the tachometer and speedometer, conveys updates from the drive computer. The instrument panel offers a predominately white color scheme for the gauge and LCD instrument display, enhancing both legibility and cohesiveness of design.
The only option is a moonroof. In contrast to its G37 siblings, a navigation system and upscale Bose audio system are not available on the Infiniti G25 Sedan.
On the safety side, the Infiniti G25 comes equipped with Infiniti's Advanced Air Bag System (AABS) with dual-stage supplemental front airbags with seat belt and occupant classification sensors, along with front seat-mounted side-impact supplemental airbags and roof-mounted curtain side impact supplemental airbags for front and rear-seat outboard occupant head protection.
Also standard are 3-point ALR/ELR seat belts (driver’s side ELR only) and front seat belts with pretensioners and load limiters and adjustable upper anchors, front seat active head-restraints and the LATCH System (Lower Anchors and Tethers for CHildren).
The Infiniti G25 is powered by the 2.5-liter V6 VQ25HR shared with the Japanese-market V36 Nissan Skyline sedans. Thanks to variable valve timing, this powerplant produces a healthy 218 hp at 6,400 rpm and 187 lb-ft (254 Nm) at 4,800 rpm.
Unfortunately for enthusiast drivers, a manual transmission is not available, the only transmission being a 7-speed automatic with downshift rev-matching, sport mode and ASC (Adaptive Shift Control) that allows for sportier shifts in performance driving situations.
Estimated fuel economy for G25 Sedan RWD models is rated at 20 mpg City and 29 mpg Highway and 19 mpg City / 27 mpg Highway for the all-wheel-drive G25x model.
Like its stronger G37 siblings, the Infiniti G25 sedan is equipped with the advanced FM platform, which locates the engine behind the front axle in the “Front Mid-ship” position. The positioning of the engine provides good front-to-rear weight balance, while the combination of long wheelbase, manageable overall length and wide front and rear track adds to the G25's overall handling performance.
The G25 Sedan's suspension is a 4-wheel independent design with lightweight aluminum components and front and rear stabilizer bars, designed to provide nimble and natural feeling handling, as well as a controlled, refined ride. The front suspension minimizes alignment changes through use of a single pivot lower wishbone and a long upper link. The rear suspension design separates the shock absorbers and springs, locating the shock absorber inline with the wheel center to help reduce suspension friction and reduce the wind-up motion of the axle on acceleration.
The Infiniti G25's brake system utilizes power-assisted 4-wheel vented disc brakes with 4-channel, 4-sensor ABS, electronic brake-force distribution (EBD) and brake assist.