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What 36 owners told NHTSA about the 2020 Toyota Sienna

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (36)Crash / fire / injury (1)Fuel system (8)Transmission & drivetrain (8)Electrical system (6)Engine (6)Body & structure (3)Steering (3)Brakes (2)Airbags (1)Electronic Stability Control (esc) (1)Seats (1)

3 of 36 complaints match · Body & structure · clear filters

Oct 14, 2025Body & structure

The power sliding door assembly failed, and the driver side rear sliding door was bound shut, and could not be opened. Disabling the power door system did not resolve the issue. The cable for the power door mechanism was hanging below the rear vent windows; but for some reason the door still would not open. I ultimately with a lot of gentle force was able to get the door open enough to see the retract side of the cable was bound up, and was able to cut it with wire cutters, and ultimately get the door to work normally as a non-powered manual sliding door. Since the original NHTSA BULLITIN on this was published in 6/2019 before my 2020 Sienna was manufactured, and Toyota did not change the mechanism until the 2021 model redesign, I believe that RECALL should be extend to all 2019 and 2020 vehicles. This seems dangerous that the door does not default to manual operation in error.

NHTSA ODI 11693401

Aug 11, 2024Body & structure

Hinge rust on fuel door causing it to break and not let rear passenger door auto open (because switch won't make up) hinge is very weakly built

NHTSA ODI 11607833

Jan 7, 2024Body & structure

The passenger side rear door unlocked and opened by itself in the middle of the night, no warning messages were given previously, doors were locked that night. Keys were not accidentally pressed on. It seems that others have had similar problems with Toyota Siennas in the past as well.

NHTSA ODI 11563987

Working with the data? Download all 36 complaints as CSV · fetched from NHTSA July 18, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Toyota Sienna verdict →