Home » Ratings » Jeep Liberty » 2002

2002 Jeep Liberty

Midsize SUV
  • Moderate overlap front
    M
  • Head restraints & seats
    P
1
Side airbags: front and rear head curtain airbags (optional)
2
Electronic stability control (standard beginning with 2006 models)
3
Antilock brakes (standard beginning with 2006 models, optional on 2002-05 models)
Model yearFront small overlapFront moderate overlapSideRoof strengthHead restraints & seats
2012
G
M
G
A
2011
G
M
G
A
2010
G
M
G
A
2009
G
M
G
P
2008
G
M
G
P
2007
M
P
2006
M
P
2005
M
P
2004
M
P
2003
M
P
2002
M
P

Applies to 2002-07 models

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

The Jeep Liberty was introduced in the 2002 model year as a replacement for the Jeep Cherokee.

The Insurance Institute for Highway Safety has evaluated the crashworthiness of the Liberty in two 40 mph frontal offset crash tests into deformable barriers. In the first test, the airbag deployed late because an airbag sensor wire shorted out early in the crash. This led DaimlerChrysler to develop a fix for this problem by shielding the wiring, and the manufacturer has initiated a recall. The Institute tested a second Liberty with the fix and the airbag inflated much earlier. Ratings of the Liberty are based on the results of the second test, except structural performance is based on both tests.

Injury measures

In the second test, measures taken from the chest indicate low risk of injuries to this body region in a crash of this severity. Forces on the head and neck indicate that injuries to the head and neck would be possible. Forces on the left tibia indicate that injuries to the lower leg would be possible. Head acceleration from the window frame hit was negligible.

Restraints and dummy kinematics

Dummy movement was reasonably well controlled in the second test. The dummy's head leaned out the open side window during rebound, then it hit the window frame.

Tested vehicle specifications

Tested vehicle2002 Jeep Liberty Sport 4wd
Weight 4,100 lbs.
Side airbagsnone
Wheelbase104 in.
Length174 in.
Width72 in.
Engine3.7 L V6
EPA ratings16 mpg city / 20 mpg highway

How this test is conducted

Measures of occcupant compartment intrusion on driver side

Test IDCEF0122CEF0127
Footwell intrusion
Footrest (cm)910
Left (cm)78
Center (cm)1010
Right (cm)33
Brake pedal (cm)11
Instrument panel rearward movement
Left (cm)0-1
Right (cm)00
Steering column movement
Upward (cm)13
Rearward (cm)02
A-pillar rearward movement (cm)11

Driver injury measures

Test IDCEF0127
Head
HIC-15772
Peak gs at hard contactnegligible
Neck
Tension (kN)2.7
Extension bending moment (Nm)29
Maximum Nij 0.51
Chest maximum compression (mm)36
Legs
Femur force - left (kN)3.2
Femur force - right (kN)2.8
Knee displacement - left (mm)11
Knee displacement - right (mm)8
Maximum tibia index - left0.91
Maximum tibia index - right0.66
Tibia axial force - left (kN)2.3
Tibia axial force - right (kN)2.2
Foot acceleration (g)
Left108
Right57

Applies to 2002-07 models

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

Seat type

Seats with adjustable head restraints

How this test is conducted

Seat typeSeats with adjustable head restraints
Geometry
Backset (mm)62
Distance below top of head (mm)65
Seat design parameters
Pass/failFail
Max T1 acceleration (g)12.1
Head contact time (ms)94
Force ratingHigh
Neck forces
Max neck shear force (N)308
Max neck tension (N)1,110

Applies to 2002-07 models

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

Seat type

Seats with fixed head restraints

How this test is conducted

Seat typeSeats with fixed head restraints
Geometry
Backset (mm)70
Distance below top of head (mm)65
Seat design parameters
Pass/failFail
Max T1 acceleration (g)12.5
Head contact time (ms)96
Force ratingHigh
Neck forces
Max neck shear force (N)313
Max neck tension (N)967

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