The 2004 Toyota Sienna underwent a significant redesign, prompting the Insurance Institute for Highway Safety (IIHS) to conduct crashworthiness tests. This article details the results of those tests, focusing on the moderate overlap frontal crash test and the important safety improvements implemented in the 2004 model.
IIHS Crash Test Results for the 2004 Toyota Sienna
The IIHS conducted two moderate overlap frontal crash tests into deformable barriers at 40 mph. The initial test revealed a significant fuel leak, leading to a recall by Toyota to address a manufacturing defect in the plastic fuel tank. A redesigned fuel tank was retrofitted, and a second test was performed. The overall evaluation incorporates data from both tests due to the similarities in results, excluding the fuel leak. The 2004 Toyota Sienna received a “Good” rating overall.
Detailed Crash Test Ratings
The following table summarizes the specific ratings for the 2004 Sienna:
| Evaluation Criteria | Rating |
|---|---|
| Overall Evaluation | Good |
| Structure and Safety Cage | Good |
| Driver Injury Measures: | |
| Head/Neck | Good |
| Chest | Good |
| Left Leg/Foot | Good |
| Right Leg/Foot | Good |
| Driver Restraints and Dummy Kinematics | Good |
This image captures the 2004 Toyota Sienna during the second moderate overlap frontal crash test conducted by the IIHS.
The driver’s survival space was well-maintained in the 2004 Toyota Sienna crash test, as evidenced by the dummy’s position relative to the steering wheel and dashboard (second test shown).
The “Good” rating across all categories indicates that the 2004 Sienna provided substantial protection for the driver in a moderate overlap frontal collision. The robust structure and safety cage helped maintain the integrity of the occupant compartment.
Greasepaint marks on the B-pillar and head restraint show where the dummy’s head made contact during rebound in the second test, indicating low head accelerations.
Minimal intrusion into the driver’s footwell area and low forces on the legs and feet contributed to the good injury measures in the 2004 Toyota Sienna crash test (second test shown).
Technical Measurements from the Crash Tests
The IIHS collected detailed measurements during the crash tests to provide a comprehensive evaluation of the 2004 Sienna’s performance. These measurements, including occupant compartment intrusion and driver injury measures, further validate the Sienna’s strong safety performance. Refer to the original article for specific data points related to footwell intrusion, brake pedal displacement, steering column movement, head acceleration, and forces on the lower extremities. The data underscores the effectiveness of the 2004 Sienna’s safety features in mitigating injuries during a frontal collision.
Conclusion: 2004 Toyota Sienna Safety
The 2004 Toyota Sienna earned high marks in IIHS crash tests, particularly after addressing the initial fuel tank issue. This makes it a strong contender for families prioritizing safety. While these tests provide valuable insights, always consult multiple resources and consider individual needs when choosing a vehicle. The 2004 Sienna’s performance in these tests demonstrates Toyota’s commitment to safety and engineering improvements.
