2020 Toyota Sienna Body and structure Problems
- Complaints
- 4about this part
- Share
- 11%of 38 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the body and structure of the 2020 Toyota Sienna, 11% of the 38 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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 complaint #11563987, filed 2024-01“Power sliding door on driver side cable snapped. After closing door and trying to use the door without power unable to open or close the door at all. Passengers forced to use alternate door for exit of vehicle.”
NHTSA complaint #11760949, filed 2026-08“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. …”
NHTSA complaint #11693401, filed 2025-10Related service bulletins
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- 11007445Jul 12, 2024The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic…
- 11007444Jul 12, 2024To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover. The purpose of the wheel film…
- 11007443Jul 12, 2024Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere. If these acidic compounds settle on an…
Body and structure: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 1 | 1% |
| 2021 | 6 | 4% |
| 2020 | 4 | 11% |
| 2019 | 6 | 13% |
| 2018 | 5 | 7% |
| 2017 | 14 | 9% |
| 2016 | 27 | 36% |
| 2015 | 61 | 26% |
| 2014 | 44 | 27% |
| 2013 | 44 | 24% |
| 2012 | 72 | 29% |
| 2011 | 154 | 25% |
| 2010 | 57 | 33% |
| 2009 | 97 | 47% |
| 2008 | 117 | 27% |
| 2007 | 102 | 28% |
| 2006 | 261 | 26% |
| 2005 | 499 | 44% |
| 2004 | 962 | 47% |
| 2003 | 18 | 17% |
| 2002 | 42 | 23% |
| 2001 | 35 | 19% |
| 2000 | 52 | 14% |
| 1999 | 36 | 17% |
| 1998 | 35 | 12% |
Other parts of the 2020 Toyota Sienna
8 complaintsTransmission and drivetrain
8 complaintsElectrical system
7 complaintsEngine
6 complaintsOther or unknown
6 complaintsBrakes
3 complaintsSteering
3 complaintsAir bags
1 complaintsElectronic stability control
1 complaintsSeats
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaintsWheels
1 complaints
← All problems reported for the 2020 Toyota Sienna
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology