Toyota Sienna Engine Problems by Year
By CarWhere Research · Updated
Not unusually. 195 of the 3,116 owner complaints filed with NHTSA for the 2008–2025 Toyota Sienna (6.3%) name the engine, below the 19.4% median share across the 152 models we track. We have no published sales figures for this model, so there is no per-1,000 rate. The worst years are 2008, 2011 and 2015.
Engine complaints
195
Filed with NHTSA, 2008–2025 models
Per 1,000 sold
No sales data
Not computed without a published sales figure
Share of all complaints
6.3%
of 3,116 complaints for this model
Engine recalls
0
NHTSA campaigns, all years
Toyota Sienna engine complaints by model year
Owner complaints filed with NHTSA whose component list includes Engine and Engine Cooling. Worst years are highlighted.
| Model year | Engine complaints | Share of all complaints | Crash / fire / injury | Engine recalls | Engine TSBs* |
|---|---|---|---|---|---|
| 2008WORST | 51 | 11.9% | 3 | — | 20 |
| 2009 | 14 | 6.8% | 5 | — | 20 |
| 2010 | 9 | 5.2% | 2 | — | 39 |
| 2011WORST | 29 | 4.7% | 5 | — | 20 |
| 2012 | 10 | 4% | 4 | — | 20 |
| 2013 | 8 | 4.4% | 1 | — | 18 |
| 2014 | 12 | 7.3% | 2 | — | 0 |
| 2015WORST | 16 | 6.9% | 4 | — | 14 |
| 2016 | 4 | 5.3% | 1 | — | 12 |
| 2017 | 15 | 9.4% | 4 | — | 33 |
| 2018 | 5 | 6.8% | 0 | — | 31 |
| 2019 | 5 | 10.6% | 0 | — | 11 |
| 2020 | 7 | 17.9% | 1 | — | 19 |
| 2021 | 3 | 6.7% | 1 | — | — |
| 2022 | 0 | 0% | 0 | — | — |
| 2023 | 0 | 0% | 0 | — | — |
| 2024 | 7 | 10.1% | 0 | — | — |
| 2025 | 0 | 0% | 0 | — | — |
- Older model years have had more time on the road to collect complaints, so compare neighboring years, not 2010 against 2024.
- Crash / fire / injury = complaints where the owner reported a crash, a fire or an injury.
- *Technical service bulletins in the year's leading TSB categories that name the engine.
Common Toyota Sienna engine problems owners describe
We searched the narratives of all 195 engine complaints for symptom keywords. One complaint can mention several, so the shares don't add up to 100%.
Toyota Sienna years to avoid for the engine
2008 Toyota Sienna
51 engine complaints (11.9% of the year's 429). Most often described: smoke, burning smell or fire.
2011 Toyota Sienna
29 engine complaints (4.7% of the year's 615). Most often described: smoke, burning smell or fire.
2015 Toyota Sienna
16 engine complaints (6.9% of the year's 233). Most often described: smoke, burning smell or fire.
Worst years are those with at least 10 engine complaints and at least 1.5 times the model's median year. For every year's overall verdict, including other systems, see the Toyota Sienna years to avoid.
Related research
Frequently asked questions
Does the 2008 Toyota Sienna have engine problems?
Yes, it is one of the worst years. Owners filed 51 engine complaints with NHTSA for the 2008 Toyota Sienna, 11.9% of all 429 complaints for that year. The most common description is "smoke, burning smell or fire" (15 complaints). 3 of those complaints report a crash, fire or injury.
Does the 2011 Toyota Sienna have engine problems?
Yes, it is one of the worst years. Owners filed 29 engine complaints with NHTSA for the 2011 Toyota Sienna, 4.7% of all 615 complaints for that year. The most common description is "smoke, burning smell or fire" (7 complaints). 5 of those complaints report a crash, fire or injury.
Does the 2015 Toyota Sienna have engine problems?
Yes, it is one of the worst years. Owners filed 16 engine complaints with NHTSA for the 2015 Toyota Sienna, 6.9% of all 233 complaints for that year. The most common description is "smoke, burning smell or fire" (5 complaints). 4 of those complaints report a crash, fire or injury.
Which Toyota Sienna years have the most engine complaints?
2008 (51), 2011 (29) and 2015 (16), by owner complaints filed with NHTSA that name the engine. Raw counts favor older and higher-selling years, so treat them as a signal, not a rate.
What are the most common Toyota Sienna engine problems?
In the 195 engine complaints, owners most often describe smoke, burning smell or fire (23.6%), stalling or shutting off while driving (13.8%) and misfire or check-engine light (13.8%). One complaint can mention several symptoms.
Is this a engine failure rate?
No. These are complaints owners chose to file with NHTSA. Many failures are never reported, and one complaint is not a confirmed defect. Without sales figures, a high count can simply mean a high-selling model.
How we count
Counts are unique owner complaints (by NHTSA ODI number) filed with NHTSA for each Toyota Sienna model year, from NHTSA's public complaints data fetched July 2026 to November 2026. A complaint counts as a engine complaint when NHTSA's component list for it includes Engine and Engine Cooling.
Per 1,000 sold divides complaints by published U.S. calendar-year sales for that year. A year needs at least 5,000 sales to get a rate, and a model needs at least 3 such years for its overall rate. The comparison median covers every model with at least 50 engine complaints that clears those floors.
These are complaint rates, not failure rates. Owners report some problems more than others, and a complaint is not a confirmed defect.
Sources
- NHTSA complaints by vehicle (owner complaints API) — National Highway Traffic Safety Administration
- NHTSA recalls by vehicle — National Highway Traffic Safety Administration
- Report a vehicle safety problem — National Highway Traffic Safety Administration