2004 Lexus GS
large luxury car / 4-door sedan
Moderate overlap front: original test
Tested vehicle: 1999 Lexus GS 400 4-door
Rating applies to 1999-2005 models built after November 1998
The Lexus GS was redesigned for the 1998 model year. All 1999 and later GS models manufactured after November 1998 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 GS 400 with the structural changes in a 40 mph frontal offset crash test into a deformable barrier.
| Evaluation criteria | Rating |
|---|---|
| Overall evaluation | |
| Structure and safety cage | |
| Driver injury measures | |
| Head/neck | |
| Chest | |
| Leg/foot, left | |
| Leg/foot, right | |
| Driver restraints and dummy kinematics | |
Technical measurements for this test
Measures of occupant compartment intrusion on driver side
| Evaluation criteria | Measurement |
|---|---|
| Test ID | CF99006 |
| Footwell intrusion | |
| Footrest (cm) | 8 |
| Left (cm) | 14 |
| Center (cm) | 16 |
| Right (cm) | 12 |
| Brake pedal (cm) | 5 |
| Instrument panel rearward movement | |
| Left (cm) | 3 |
| Right (cm) | 5 |
| Steering column movement | |
| Upward (cm) | 3 |
| Rearward (cm) | 1 |
| A-pillar rearward movement (cm) | 3 |
Driver injury measures
| Evaluation criteria | Measurement |
|---|---|
| Test ID | CF99006 |
| Head | |
| HIC-15 | 207 |
| Peak gs at hard contact | 44 |
| Neck | |
| Tension (kN) | 1.6 |
| Extension bending moment (Nm) | 28 |
| Maximum Nij | 0.57 |
| Chest maximum compression (mm) | 32 |
| Legs | |
| Femur force - left (kN) | 4.8 |
| Femur force - right (kN) | 2.4 |
| Knee displacement - left (mm) | 12 |
| Knee displacement - right (mm) | 4 |
| Maximum tibia index - left | 0.65 |
| Maximum tibia index - right | 0.79 |
| Tibia axial force - left (kN) | 1.5 |
| Tibia axial force - right (kN) | 2.9 |
| Foot acceleration (g) | |
| Left | 65 |
| Right | 62 |
Head restraints & seats
Seat type: All seats
| Overall evaluation | |
|---|---|
| Dynamic rating | |
| Seat/head restraint geometry |
Technical measurements for this test
| Seat type | All seats |
|---|---|
| Geometry | |
| Backset (mm) | 52 |
| Distance below top of head (mm) | 52 |
| Seat design parameters | |
| Pass/fail | Pass |
| Max T1 acceleration (g) | 9.5 |
| Head contact time (ms) | 96 |
| Force rating | 3 |
| Neck forces | |
| Max neck shear force (N) | 237 |
| Max neck tension (N) | 1,009 |
About the head restraint & seat test
Currently, IIHS tests apply only to front seats.