NHTSA Defect Investigations for the 2018 Volkswagen Tiguan

The Office of Defects Investigations (ODI) is an office within the NHTSA which investigates serious safety problems in the design, construction or performance of vehicles. The NHTSA is authorized to order manufacturers to recall and repair vehicles, if the ODI finds a safety issue. NHTSA investigations for the 2018 Volkswagen Tiguan, both ongoing and closed, are listed below:

  1. INVESTIGATION: Seat Belt Webbing Failure

    NHTSA Engineering Analysis #EA18005

    • Status:
      PENDING
    • Date Opened: July 03, 2018
    • Date Closed: N/A
    • Recall: No recall yet

    Component(s): Seat Belts:Front
    Seat Belts:Front:Webbing

    Summary: In December 2017, NHTSA conducted two New Car Assessment Program (NCAP) tests on the 2018 MY Volkswagen (VW) Tiguan.Both tests were 35 mph, full frontal impacts into a rigid barrier with a 50th percentile male dummy seat-belted in the driver position and a 5th percentile female seat-belted in the right front-passenger position. The tests were conducted on December 8, 2017 at MGA Research Corp. in Wisconsin (MGA) and December 13, 2017 at the Transportation Research Center of Ohio (TRC).During both crash tests, the driver seat belt webbing completely separated in tension where it looped through the seat belt latch tongue (see attached photos).Based on its analysis of the NCAP test results, VW asserted that the test dummy umbilical cord exerted additional forces on the seat belt system causing the separation.To support this theory, VW conducted several sled tests.The Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE18-001) on 01/10/2018 to evaluate the two (2) incidents of seat belt separation.ODI and NCAP reviewed the sled test data submitted by VW in support of their theory.Micro analysis, conducted by the Materials Laboratory at the National Transportation Safety Board (NTSB), verified the seat belts failed in tension and not due to cuts or abrasion.ODI is upgrading PE18-001 to an Engineering Analysis to further examine seat belt behavior in the subject vehicles and to determine, among other things, a root cause for the seat belt separation. ODI will perform a thorough review of any vehicle and seat belt design changes for the new 2018 MY Tiguan platform and their effects on the performance of the seat belt system.

  2. INVESTIGATION: Seat Belt Webbing Failure

    NHTSA Preliminary Evaluation #PE18001

    • Status:
      PENDING
    • Date Opened: January 10, 2018
    • Date Closed: N/A
    • Recall: No recall yet

    Component(s): Seat Belts:Front:Webbing

    Summary: NHTSA recently conducted two New Car Assessment Program (NCAP) tests on the 2018 MY Volkswagen (VW) Tiguan.Both tests were 35 mph, full frontal, rigid barrier crashes with a 50th percentile male dummy belted in the driver position and a 5th percentile female belted in the passenger position. The tests were conducted on December 8, 2017 at MGA Research Corp. in Wisconsin (MGA) and December 13, 2017 at the Transportation Research Center of Ohio (TRC).During both crash tests, the driver seat belt webbing completely separated where the webbing looped through the seat belt latch tongue. The Office of Defects Investigation (ODI) is opening this investigation to assess the seat belt separations and the potential for this condition to occur in real world use.

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