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 1999 Hyundai Sonata, both ongoing and closed, are listed below:

  1. INVESTIGATION: IMPROPER FRONTAL AIR BAG PERFORMANCE

    NHTSA #DP03001

    Status:
    CLOSED

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  2. INVESTIGATION: FRONT SUB-FRAME CORROSION

    NHTSA #EA08016

    Status:
    RECALLED

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  3. INVESTIGATION: FRONT SUB-FRAME CORROSION

    NHTSA #PE08029

    Status:
    CLOSED

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