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1999 Infiniti Q45

Large luxury car
  • Moderate overlap front
    M
1997 Infiniti Q45 shown
1997 Infiniti Q45 shown
1
Side airbags: front seat-mounted torso airbags (1997 models manufactured after March 1997); front seat-mounted combination head and torso airbags (1998-2001 models manufactured after January 1998)
2
Antilock brakes
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2006
G
M
2005
G
M
2004
G
2003
G
2001
M
2000
M
1999
M
1998
M
1997
M

Applies to 1997-2001 models

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

The Infiniti Q45 was redesigned for the 1997 model year. All 1997 and later Q45 models manufactured after March 1997 include structural changes to improve occupant protection in frontal crashes (note: information about when a specific vehicle was manufactured is on the certification label typically affixed to the car on or near the driver door).

The Insurance Institute for Highway Safety has evaluated the crashworthiness of a Q45 with the structural changes in two 40 mph frontal offset crash tests into deformable barriers. (Following discussions with the automaker about the head injury criterion in the first crash test, the second offset test was conducted. Similar results were obtained. This evaluation is based on both tests.)

Injury measures

Measures taken from the chest indicate low risk of injuries to this body region in a crash of this severity. In both tests, forces on the head indicate that injuries to the head would be possible. Forces on both tibias indicate that injuries to the lower legs would be possible. Head acceleration from the B-pillar hit was low.

Restraints and dummy kinematics

Dummy movement wasn't well controlled in either crash test. After the dummy moved forward into the airbag, the seatback moved forward so that the head restraint hit the dummy's head. During rebound, the dummy's head hit the B-pillar.

Tested vehicle specifications

Tested vehicle1997 Infiniti Q45 4-door
Weight 3,966 lbs.
Side airbagsfront seat-mounted torso airbags
Wheelbase111 in.
Length199 in.
Width72 in.
Engine4.1 L V8
EPA ratings18 mpg city / 24 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDCF97007CF97008
Footwell intrusion
Footrest (cm)1519
Left (cm)1925
Center (cm)2229
Right (cm)1520
Brake pedal (cm)1620
Instrument panel rearward movement
Left (cm)810
Right (cm)46
Steering column movement
Upward (cm)89
Rearward (cm)-6-8
A-pillar rearward movement (cm)1112

Driver injury measures

Test IDCF97007CF97008
Head
HIC-15786841
Peak gs at hard contact37 25
Neck
Tension (kN)2.3 2.4
Extension bending moment (Nm)24 29
Maximum Nij 0.41 0.44
Chest maximum compression (mm)44 41
Legs
Femur force - left (kN)3.7 3.1
Femur force - right (kN)2.8 2.9
Knee displacement - left (mm)2 0
Knee displacement - right (mm)5 5
Maximum tibia index - left0.91 1.21
Maximum tibia index - right0.63 1.12
Tibia axial force - left (kN)1.11.6
Tibia axial force - right (kN)1.41.4
Foot acceleration (g)
Left7356
Right4756

©1996-2014, Insurance Institute for Highway Safety, Highway Loss Data Institute | www.iihs.org