2001 Isuzu Trooper

midsize SUV / 4-door SUV

2001 Isuzu Trooper 4-door SUV

Crashworthiness

Rating overview
Moderate overlap front

Key

  • G
    Good
  • A
    Acceptable
  • M
    Marginal
  • P
    Poor
  • Superior
  • Advanced
  • Basic

Some ratings use a scale of Poor to Good. Others range from Basic to Superior.

Moderate overlap front

Rating applies to 2000-02 models

Tested vehicle: 2001 Isuzu Trooper S 4-door 4wd

The Isuzu Trooper was redesigned for the 1992 model year and structurally modified beginning with 2000 models to improve occupant protection in frontal crashes.

The Insurance Institute for Highway Safety has evaluated the crashworthiness of the Trooper in three 40 mph moderate overlap frontal crash tests into deformable barriers. Three tests were conducted because major fuel leaks occurred in the first two tests. Isuzu identified defects in the design and recalled the affected models. A third test was conducted to assess the effect of the design fixes.

Overall evaluation
Structure and safety cage
Injury measures
Head/neck
Chest
Leg/foot, left
Leg/foot, right
Restraints and dummy kinematics
Dummy movement wasn't well controlled during any of the three offset tests. There was far too much upward movement of the steering wheel, which contributed to the dummy's head bottoming out the airbag and hitting the steering wheel in each of the tests. During rebound in the first test, the dummy's head hit the upper B-pillar near the roof side rail. In the second test, the dummy rebounded into the seat without its head coming close to any stiff structure that could cause additional injury. In the third test, the dummy's head grazed the B-pillar on rebound.

Action shot taken during the frontal offset crash test.

The dummy's position in relation to the steering wheel and instrument panel after the crash test indicates the driver's survival space was maintained reasonably well except for far too much upward movement of the steering wheel.

The rubber fuel hose was torn at the indicated location during the second crash test, allowing simulated fuel to leak out of the vehicle following the impact. As part of the second recall, tougher sheathing was installed around this portion of the fuel hose (inset).

The steering wheel moved upward far too much, which contributed to the dummy's head bottoming out the airbag and hitting the steering wheel.

Technical measurements for this test

Measures of occupant compartment intrusion on driver side

Test ID CF00021 CF00024 CF00029
Footwell intrusion
Footrest (cm) 17 20 21
Left (cm) 19 21 21
Center (cm) 19 21 23
Right (cm) 21 21 23
Brake pedal (cm) 20 19 20
Instrument panel rearward movement
Left (cm) 3 3 2
Right (cm) 3 4 1
Steering column movement
Upward (cm) 21 20 21
Rearward (cm) -3 -3 -2
A-pillar rearward movement (cm) 1 1 2

Driver injury measures

Test ID CF00021 CF00024 CF00029
Head
HIC-15 411 434 390
Peak gs at hard contact 76 75 74
Neck
Tension (kN) 2.5 2.0 2.1
Extension bending moment (Nm) 33 35 24
Maximum Nij 0.60 0.54 0.44
Chest maximum compression (mm) 33 33 34
Legs
Femur force - left (kN) 5.4 4.8 5.3
Femur force - right (kN) 3.3 4.0 3.4
Knee displacement - left (mm) 8 7 8
Knee displacement - right (mm) 10 8 6
Maximum tibia index - left 1.11 0.98 1.08
Maximum tibia index - right 1.23 1.54 1.07
Tibia axial force - left (kN) 10.9 11.5 10.9
Tibia axial force - right (kN) 3.2 6.5 6.6
Foot acceleration (g)
Left 287 330 300
Right 471 372 345

How the moderate overlap front test is conducted