Home › Cars › Toyota › Sienna › 2021
2021 Toyota Sienna problems: engine and transmission complaints and recalls
No elevated drivetrain complaint concentration in the available NHTSA records for the 2021 Toyota Sienna. Engine, transmission and fuel system account for 11% of relevant complaints.
Better than 97% of the 1,790 model years we track (2010–2023).
Does the 2021 Toyota Sienna have engine or transmission problems?
Not as a pattern, going by owner complaints. 15 of 165 relevant complaints filed with NHTSA about the 2021 Toyota Sienna concern the engine, transmission or fuel system (11%). For comparison, the 2020 scores 41% and the 2022 scores 9%. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2021 compares with other Toyota Sienna years
Of the 13 Toyota Sienna years with enough complaints to score, the 2021 is the 3rd-best on engine and transmission share (11%). The worst is the 2018 (48%), the best the 2022 (9%). By volume, the 2021 drew 165 complaints (15 drivetrain), against 38 for the 2020 and 119 for the 2022.
Toyota Sienna years to avoid and best years →
2010 Sienna problems · 2011 Sienna problems · 2012 Sienna problems · 2013 Sienna problems · 2014 Sienna problems · 2015 Sienna problems · 2016 Sienna problems · 2017 Sienna problems · 2018 Sienna problems · 2019 Sienna problems · 2020 Sienna problems · 2021 · 2022 Sienna problems
The rest of the picture on the 2021 Toyota Sienna
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 15 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
2021 Toyota Sienna engine and transmission recalls
No engine or transmission recalls. NHTSA lists 1 recall campaign on the 2021 Toyota Sienna, none of them for the engine, transmission or fuel system. A recall is the manufacturer admitting a defect and paying to fix it; whether a specific car still has one open depends on its VIN, which the full report checks. The owner complaints above are a separate record and often point at problems that never became a recall.
1 other recall on this model year (airbags, lighting, brakes and the rest)
Source: NHTSA recall campaigns filed against this year, make and model; one of NHTSA's listings did not answer when this page was built, so the list may be incomplete. Checked October 3, 2026.
Checking one particular 2021 Toyota Sienna? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
Get a history report from EpicVIN Before you pay: EpicVIN’s $1 offer is a 3-day trial (up to 5 reports) that renews at $49.99 a month unless you cancel. Other plans are listed under “View all our packages” at checkout. We may earn a commission if you buy through this link. It does not change what this page reports.Questions people ask about the 2021 Toyota Sienna
Does the 2021 Toyota Sienna have engine or transmission problems?
Not as a pattern, going by owner complaints. 15 of 165 relevant complaints filed with NHTSA about the 2021 Toyota Sienna concern the engine, transmission or fuel system (11%). It describes the model year, not any one car, so an inspection still matters.
What is the most common problem with the 2021 Toyota Sienna?
Going by NHTSA owner complaints, the most common problem filed against the 2021 Toyota Sienna is service brakes: 80 of 165 complaints (48%) name it, followed by seats (17) and air bags (16). A complaint can name more than one component, so these overlap. Engine, transmission and fuel-system complaints together make up 11% of the relevant total.
Is the 2021 Toyota Sienna reliable?
On the engine and transmission, nothing stands out: 11% of relevant complaints filed with NHTSA concern the drivetrain, below the 33% line where we call a signal elevated. That is better than 97% of the 1,790 model years we track. Among the 13 Toyota Sienna years we score, it ranks 3rd-best. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2021 Toyota Sienna?
No. NHTSA lists 1 recall campaign on the 2021 Toyota Sienna, none of them for the engine, transmission or fuel system.
Which Toyota Sienna years are better?
Among the Toyota Sienna years we track, the 2022 (9%) and the 2016 (10%) have a lower engine and transmission complaint share than the 2021 (11%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/toyota-sienna
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Check a VINExperimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.