Toyota Sienna problems, by model year and system
865 complaints owners filed with NHTSA about the Toyota Sienna 2016–2026, and the 1 system the record is deep on — seat (230). Each system has a page across the years; 1 model-year page goes deeper still. Every figure is a linked federal record; none is a failure rate or a verdict on one car.
The systems the record is deep on
Source: NHTSA complaints, recalls, investigations and manufacturer communicationsToyota Sienna complaints, year by system
Source: NHTSA complaint database| Model year | seat |
|---|---|
| 2026 13 in all | 3 |
| 2025 267 in all | 212 |
| 2024 69 in all | 5 |
| 2023 68 in all | 3 |
| 2022 20 in all | 2 |
| 2021 43 in all | 5 |
| 2020 38 in all | — |
| 2019 45 in all | — |
| 2018 72 in all | — |
| 2017 154 in all | — |
| 2016 76 in all | — |
Complaints owners filed with NHTSA naming each system, per model year; a bold count links the year’s own page on that system. Counts scale with sales and with time on the road; nothing here is a rate, and NHTSA’s headings are coarse (“Power Train” is the transmission and the driveline).
Common questions
Source: NHTSA complaint databaseWhich Toyota Sienna system draws the most complaints?
Seat: 230 complaints across 11 model years, 27% of everything owners filed about the Toyota Sienna. A count, not a rate — it says nothing about how many were sold.
Which Toyota Sienna year has the most complaints?
2025 (267), 2017 (154), 2016 (76). Older years have had longer to collect them; the year pages show each year's share by system.