2020 Toyota Sienna problems and complaints
Owners have filed 38 complaints with NHTSA about the 2020 Toyota Sienna. The most-reported areas: Power Train (8), Electrical System (7), Unknown Or Other (6).
Key takeaways
- 38 owner complaints on file with NHTSA.
- 0 involve a crash, 1 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Power Train | 8 | 21% |
| Electrical System | 7 | 18% |
| Unknown Or Other | 6 | 16% |
| Engine | 6 | 16% |
| Fuel/Propulsion System | 6 | 16% |
| Structure | 4 | 11% |
| Steering | 3 | 8% |
| Service Brakes | 3 | 8% |
| Fuel System | 2 | 5% |
| Gasoline | 2 | 5% |
| Air Bags | 1 | 3% |
| Visibility | 1 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2020 Toyota SIENNA VAN FWD | 5/5 | 4/5 | 5/5 | 4/5 |
| 2020 Toyota SIENNA VAN AWD | 5/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Structure - filed 2026-08-31
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.
Electrical System - filed 2026-08-25
Odometer Fraud. The contact purchased a 2020 Toyota Sienna. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 88,044. It was later discovered upon checking with the local DMV that the mileage was 288,044.
Air Bags,unknown Or Other - filed 2026-06-21
We had our van parked on a driveway with a front facing slope, we had hard rains went we where going away there was water coming out of the seat belt on the passenger side and the panel above the window was stained down to the window support where the air bag is. I've been reading reports as far back as 2008 we have a ...
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More for the 2020 Toyota Sienna
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.