13 Investigations Into Sienna Defects

If enough consumers complain about the same problem with the same type of vehicle, the National Highway Traffic Safety Administration (NHTSA) may open an investigation. The Office of Defects Investigation (ODI) is the agency in charge of performing those investigations.

The 2004 Sienna has been investigated 10 times, which is more than any of the other 6 years. On average you can expect 3.71 investigations per model year and we've listed some of the most recent below.

    Toyota Sienna Investigations

    A investigation can involve multiple model years, so we've ranked each of the 7 Sienna years and sorted them by how many times they've been involved in a specific campaign.

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