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2005 Infiniti FX

Midsize luxury SUV
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  • Moderate overlap front
    G
  • Head restraints & seats
    M
1
Side airbags: front and rear head curtain airbags and front seat-mounted torso airbags
2
Rollover sensor: designed to deploy the side curtain airbags in the event of an impending rollover (beginning with 2005 models)
3
Electronic stability control
4
Antilock brakes
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2013
G
G
2012
G
G
2011
G
G
2010
G
G
2009
G
G
2008
G
M
2007
G
M
2006
G
M
2005
G
M
2004
G
M
2003
G
M

Applies to 2003-08 models

Overall evaluation
G
Structure and safety cage
G
Injury measures
Head/neck
A
Chest
G
Leg/foot, left
G
Leg/foot, right
G
Restraints and dummy kinematics
G
Important: Frontal crash test ratings should be compared only among vehicles of similar weight.

The Infiniti FX was introduced in the 2003 model year. There are two models, the FX35 (equipped with a V6 engine) and the FX45 (equipped with a V8 engine).

The Insurance Institute for Highway Safety has evaluated the crashworthiness of the FX in two 40 mph frontal offset crash tests into deformable barriers. In the first test, the driver frontal airbag deployed late, with the result that high forces were recorded on the dummy's head, indicating the likelihood of head injuries. This led Infiniti to modify the frontal airbag deployment characteristics on models produced after September 10, 2003. Also, Infiniti initiated a service campaign to modify, at its cost, vehicles produced earlier. The Institute tested a second FX with the modified driver airbag, and the airbag inflated much earlier. Ratings of the FX are based on the results of the second test, except structural performance is based on both tests.

Injury measures

Measures taken from the neck, chest, and both legs indicate low risk of injuries to these body regions in a crash of this severity. A high head acceleration occurred when the dummy's head hit the steering wheel through the airbag, indicating that head injuries would be possible.

Restraints and dummy kinematics

Dummy movement was well controlled. During rebound, the dummy's head brushed the inflated side curtain airbag and its fabric cover. The dummy continued to rebound into the seat without its head coming close to any stiff structure that could cause injury.

Tested vehicle specifications

Tested vehicle2003 Infiniti FX35 4wd
Weight 4,282 lbs.
Side airbagsfront and rear head curtain airbags and front seat-mounted torso airbags
Wheelbase112 in.
Length189 in.
Width76 in.
Engine3.5 L V6
EPA ratings16 mpg city / 22 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDCEF0324CEF0320
Footwell intrusion
Footrest (cm)55
Left (cm)55
Center (cm)76
Right (cm)66
Brake pedal (cm)44
Instrument panel rearward movement
Left (cm)-1-2
Right (cm)-1-4
Steering column movement
Upward (cm)43
Rearward (cm)23
A-pillar rearward movement (cm)00

Driver injury measures

Test IDCEF0324
Head
HIC-15539
Peak gs at hard contact87
Neck
Tension (kN)1.1
Extension bending moment (Nm)21
Maximum Nij 0.24
Chest maximum compression (mm)24
Legs
Femur force - left (kN)1.9
Femur force - right (kN)3.5
Knee displacement - left (mm)0
Knee displacement - right (mm)0
Maximum tibia index - left0.28
Maximum tibia index - right0.36
Tibia axial force - left (kN)1.7
Tibia axial force - right (kN)1.9
Foot acceleration (g)
Left68
Right78

Applies to 2003-08 models

Overall evaluation
M
Dynamic rating
M
Seat/head restraint geometry
A
Important: Ratings for head restraints & seats should be compared only among vehicles of similar weight.

Seat type

All seats (AHR)

How this test is conducted

Seat typeAll seats (AHR)
Geometry
Backset (mm)82
Distance below top of head (mm)70
Seat design parameters
Pass/failPass
Max T1 acceleration (g)9.2
Head contact time (ms)110
Force ratingHigh
Neck forces
Max neck shear force (N)217
Max neck tension (N)853

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