Track Testing - 2009 Infiniti FX50 AWD Long-Term Road Test

2009 Infiniti FX50 Long-Term Road Test

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2009 Infiniti FX50 AWD: Track Testing

February 06, 2009

(photo by Scott Jacobs)

Vehicle: 2009 Infiniti FX50 AWD

Odometer: 1,362
Date: 12/09/08


Drive Type: All Wheel drive

Transmission Type: 7-speed Automatic
Engine Type: V8
Displacement (cc / cu-in): 5026cc (307cu-in)
Redline (rpm): 6,800
Horsepower (hp @ rpm): 390 @ 6500
Torque (lb-ft @ rpm): 369 @ 4400
Brake Type (front): ventilated disc
Brake Type (rear): ventilated disc
Steering System: speed-proportional power steering
Suspension Type (front): double wishbone
Suspension Type (rear): multi-link
Tire Size (front): 265/45R21 (104W)
Tire Size (rear): 265/45R21 (104W)
Tire Brand: Dunlop
Tire Model: SP Sport 01
Tire Type: performance
Wheel Size: 21 X 9.5 front - 21 X 9.5 rear
Wheel Material (front/rear): alloy
As tested Curb Weight (lb): 4,621

Test Results:

0 - 30 (sec): 2.1
0 - 45 (sec): 3.6
0 - 60 (sec): 5.5
0 - 75 (sec): 7.9
1/4 Mile (sec @ mph): 13.7 @ 101.5
0-60 with 1-ft Rollout (sec): 5.3

Acceleration Rating: Very Good

30 - 0 (ft): 30
60 - 0 (ft): 117
Braking Rating: Very Good
Slalom (mph): 63.3
Skid Pad Lateral acceleration (g): .82
Handling Rating: Very Good
Db @ Idle: N/A
Db @ Full Throttle: N/A
Db @ 70 mph Cruise: N/A

Acceleration Comments: This is one quick SUV. however, much like VQ35/37 this V8 isn't quiet or smooth @ high RPM. Still with a rush of accel like this, who cares.

Braking Comments: Solid, fade-free and confident from 1st to last stop. And it's a good thing given this SUV's motor.

Handling Comments: (With VSC off, the FX50 was good around the skidpad until the limits are approached. Then, the AWD system begins doing something that requires both throttle and steering input to maintain a smooth arc.

In the slalom, the FX50 is one of those rare AWD vehicle that reponds well to aggressive input (steering and throttle). Eventually over-steer becomes limiting factor. Quick turn-in and yaw response. A little hard to learn and trust, but it works. 4,600-lbs?! Really? Doesn't feel like it.

Mike Magrath, Vehicle Testing Assistant

  • Full Review
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  • Long-Term

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