

The Infiniti FX is a mid-size luxury crossover SUV produced by the
Nissan-owned Infiniti luxury vehicle brand since the 2003 model year.
The FX replaced the QX4 as Infiniti's mid-size luxury-type SUV, although
the QX4 was smaller than the FX. It was released at the same time as
its competitors, the Porsche Cayenne and Volvo XC90. It shares the same
FM platform as the rear-wheel drive Nissan 370Z, whereas the similarly
sized Nissan Murano is based on the same D platform as the front-wheel
drive Nissan Altima. The FX and QX56, whose platform is shared with the
Nissan Armada, are not sold in Japan.
The FX has been described as having the profile of a "giant scarab" or a
"Bionic cheetah". Its designers sought what they called a "cool fusion"
– the blending of a substantial SUV lower body with the sleek, elegant
upper body more reminiscent of a classic sports car or sports GT. In
addition, they sought to combine sports-car performance with SUV
functionality. The FX is now in its second generation with the 2009
model year FX35 and FX50.
First generation (S50, 2003–2008)
The nameplates FX35 and FX45 refer to the two available engines. The
FX35 is available in two drivetrains, the RWD and the AWD, which are
both fitted to a dual overhead cam 3.5-liter 24-valve V6 VQ35DE gasoline
engine, with aluminum-alloy block and heads, electronically controlled
“drive-by-wire” throttle system, and low-friction molybdenum-coated
pistons that makes use of the continuous variable valve timing which in
part optimizes the opening of intake valves. This is also coupled with
an electronically controlled super-wide ratio five-speed automatic with a
manumatic shift mode that includes the option of sequentially selected
manual gearshifts and downshift rev matching.
The FX45 incorporates a 4.5-liter (4,494 cc) 32-valve V8 DOHC VK45DE
gasoline engine with four valves per cylinder, microfinished camshafts
with aluminum-alloy block and heads, low-friction molybdenum-coated
pistons, titanium intake and exhaust valves, modular cylinder heads,
microfinished crankshaft, lightweight pistons, super-silent single stage
cam drive chain, and a Continuously Variable Valve Timing Control
System that optimizes opening of intake valves.
Total 2007 sales of the FX45 numbered just 1,598 units, about a tenth of the FX35s.
2006 facelift
The
FX series was updated for 2006 with new options and standard features.
The updates included an exterior facelift with new grille, bumper, wheel
design and three new exterior colors, and inside a revised center
console with new color screen. Many features previously optional were
made standard, including the 300-watt Bose audio system, RearView
Monitor, 7-inch color display, Advanced Air Bag System (AABS), leather
seating surfaces with heated front seats, 10-way power driver’s seat
with power lumbar support and 8-way power passenger’s seat.
The FX45 featured additional upgrades, including new 20-inch wheels,
leather-appointed seats, a revised sport-tuned 4-wheel independent
suspension with new dampers, a Bluetooth system, and the Premium Package
became standard. The taillights on Sport Package equipped FX35 models
and all FX45 models were changed from red to clear.
The Infiniti FX was the first passenger vehicle to offer a lane
departure warning system in the United States market. Infiniti's version
uses a camera that watches the lane markings to alert everyone in the
car via an audible buzzer that the driver is drifting unintentionally.
Performance
FX35:
* 0-60 mph (97 km/h): 7.1 seconds
* 0-100 mph (160 km/h): 17.5
* 1/4 mile: 15.5 seconds at 91.0 mph (146.5 km/h)
* 200 ft (61 m) Skidpad: .79g
* Top Speed: 137 mph (220 km/h) (drag limited)
FX45:
* 0-60 mph (97 km/h): 6.3 seconds
* 0-100 mph (160 km/h): 16.5 seconds
* 1/4 mile: 14.8 seconds at 95.1 mph (153.0 km/h)
* 200 ft (61 m) Skidpad: .82g
* Top Speed: 145 mph (233 km/h) (electronically limited)
Second generation (S51, 2009–)
The redesigned 2009 Infiniti FX was officially unveiled at the Geneva
Motor Show on March 4, 2008, and went on sale in June 2008. The V6 model
is still called the FX35 with the VQ35HR V6, however the V8 model has
been renamed FX50 in recognition of its 5-liter engine with the
newly-developed VK50VE.
The exterior retains some of the first generation's "Bionic Cheetah"
look and "giant scarab" profile, while incorporating new styling cues.
Some of the most distinct features of the new FX are the longer,
sharklike sculpted headlights, a large trapezoidal grille filled with
horizontal dark-chrome waves, and completely functional side air vents.
The overall size and dimensions of the new model, both external and
internal, remain similar to the previous model.
The interior was completely redesigned to bring the FX up to the level
of luxury found inside of other Infiniti models like the G37 and EX35.
Features include stitched leather seats, stained maple wood or piano
black finishes, and matte-finish surfaces.
The FX comes with a new double-wishbone front suspension design, similar
to that found on the G37 and EX35, replaces the previous generation
FX’s front strut-type suspension. The suspension’s upper and lower
A-arms help provide superior control of a wheel’s motion, especially
when the suspension compresses and extends, providing more travel than
the previous strut design. The net result is a better ride and improved
handling. The current FX is now 1.6 times more torsionally rigid and 3.4
times more resistant to bending than the previous model.
FX37 (Europe)
A Europe-specific FX37 was unveiled at the 2008 Paris Motor Show, and
went on sale in Europe in October, 2008 with the VQ37VHR. According to
Jim Wright, Vice President Infiniti Europe, “FX37 is a significant model
for Europe and we expect it to account for as much as 80 per cent of FX
sales. By combining excellent handling and punchy performance with
genuine luxury and SUV practicality, FX37 will appeal to customers who
appreciate quality and individuality." Europeans get the 320-hp FX37 as
their entry level model instead of the FX35, which will be available in
FX37 GT and FX37S versions. The FX37 GT comes standard with 20-inch
alloy wheels, electric and heated/ventilated front seats, adaptive
xenons, parking camera sensors, all-wheel-drive and a 7-speed automatic
with paddle shifting. The FX37S gets 21 inch alloy wheels, Continuous
Damping Control and sports seats.
Pricing for the 2009 Infiniti FX37 in Europe starts at €55,950 ($79,437 USD).
FX30 turbo diesel (Europe)
Infiniti
has launched a new 3.0-liter V6 (V9X Engine) diesel engine that will
power the EX, FX and M models. The V6 engine delivers a total of 240 hp
(179 kW), 406 lb·ft (550 N·m) at 2,500 rpm. The engine is mated to a
seven-speed automatic transmission. It was launched in the 2010 Geneva
Motor Show.
Phase two of Infiniti’s quiet assault on the European luxury car market
is underway with the arrival of a newly developed 3.0-litre V6 diesel.
The engine, the first in the brand’s 20 year history, has been
specifically designed to deliver high levels of refined performance in
line with Infiniti philosophy. It will initially be available in both
the acclaimed EX and FX crossovers and later in the Infiniti M luxury
performance sedan.Although a V8 diesel engine was investigated, the V6
format was identified early on as the ideal layout for the unit,
providing the optimum balance between overall performance, refinement
and volume potential across the three Alliance brands. Target
performance was 238 PS (175 kW), 500 N·m (370 lb·ft) of torque and early
compliance with forthcoming Euro 5 emission legislation.
Power output is bang on target at 175 kW (238 PS) while the
class-leading torque output of 550 Nm (for rear and four-wheel drive
applications) is better than the target. Better still, peak torque is
achieved from as low as 1,750 rpm and is available all the way to 2,500
rpm, while as much as 500 N·m (370 lb·ft) is available from a mere 1,500
rpm. Idle speed is an exceptionally low 650 rpm with none of the NVH
usually associated with a diesel.
Equipment
Standard comfort features include dual-zone automatic climate control, a
premium 11-speaker, 300 watt Bose stereo with in-dash 6 CD changer and
2GB hard drive, steering wheel mounted audio controls, premium leather
seating surfaces, heated front bucket seats, heated power mirrors,
10-way power driver seat w/ lumbar adjustment, 8-way power passenger
seat, individual driver memory system (drivers seat, side mirrors, and
steering wheel positions), RearView back-up camera, UV reflective glass,
and Infiniti's Intelligent Key system. The Intelligent Key design from
the first generation FX now incorporates a Push Button Ignition system.
With this system, the driver does not have to remove keys to drive the
vehicle; a simple electronic fob carried on the driver allows the driver
to lock/unlock and start the vehicle keyless.
Other standard features include Scratch Shield paint (first introduced
on the Infiniti EX), black lacquer interior trim, high-intensity
discharge (HID) headlamps, LED brake lamps, 12-point sequential welcome
lighting, electronic liftgate closure assist, automatic dimming
rear-view mirror with compass, glass moonroof, rear privacy glass,
integrated rear spoiler, and dual chrome exhaust tips.
Standard safety features include dual front air bags, side impact air
bags, and rear curtain airbags with rollover sensor, as well as Zone
Body construction with front and rear crumple zones.
Options include Infiniti's Hard Drive Navigation with touch screen and
3D building images, All-Around View Monitor (first introduced on the
Infiniti EX) which displays a virtual bird's-eye view of the vehicle and
surroundings to aide in parking, and Intelligent Cruise Control, which
provides the benefits of standard cruise control with the ability to add
speed and distance intervals, as well as automatically slowing the
vehicle in slowing traffic to help provide a safe distance. When traffic
flow ahead speeds up, Intelligent Cruise Control then reaccelerates to
the preset speed and distance settings. Optional industry-first Distance
Control Assist intuitively helps the driver release the throttle and
apply the brakes as needed in slowing traffic. Another option, Forward
Collision Warning uses the Intelligent Cruise system's laser range
finder to alert the driver of a potential collision, and if the driver
does not respond, Brake Assist automatically engages the brakes to help
reduce collision speed and impact. The Premium Package adds heated and
cooled front seats, a power adjustable steering wheel, iPod integration
system, folding outdoor mirrors, and aluminum paddle shifters to adjust
the gears when using the manual shift mode.
Transmission and drivetrain
All
2009 FX models came standard with Infiniti's new 7-speed automatic
transmission, which was also introduced on the 2009 G37 coupe. A much
welcomed improvement over the previous 5-speed box, the 7-speed
transmission delivers power more smoothly.
The FX35 (U.S.) is available in both rear-wheel drive or all-wheel drive
configuration, while the FX35 (Canada), FX37 (Europe) and FX50 (all)
come standard with all-wheel drive. The FX uses Nissan's ATTESA E-TS
all-wheel drive system.
All FX50 models ordered with the Sport package (FX50S) come equipped
with Active Steering package. This package features a planetary gearset
on the steering shaft (similar to BMW), that varies the steering ratio
between 12.0:1 and 18.5:1. The package also includes a rear-wheel
steering system that induces up to one degree of steer to the rear
wheels, to provide increased handling response for the vehicle.
Performance
FX35:
* 0-60 mph (97 km/h): 6.1 seconds
* 0-100 mph (160 km/h): 15.7
* 1/4 mile: 14.9 seconds at 96.0 mph (154.5 km/h)
* 300 ft (91 m) Skidpad: .82g
* Top Speed: 142 mph (229 km/h) (drag limited)
FX37 (Europe):
* 0-62 mph (100 km/h): 5.8 seconds
* 1/4 mile: 14.6 seconds at 97.5 mph (156.9 km/h)
* Top Speed: 145 mph (233 km/h) (drag limited)
FX50:
* 0-60 mph (97 km/h): 5.0 seconds
* 0-100 mph (160 km/h): 12.6 seconds
* 1/4 mile: 13.7 seconds at 102.1 mph (164.3 km/h)
* 200 ft (61 m) Skidpad: .87g
* Top Speed: 165 mph (266 km/h) (electronically limited)
Production
All vehicles are built at Nissan Motor Company's plant in Tochigi, Japan.