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Toyota Sienna HybridModel year report

2021 Toyota Sienna Hybrid Problems

Complaints
45filed with NHTSA
Median mileage
30,800miles, 13 complaints with mileage
Recalls
4campaigns on record
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA crash rating
5 / 5stars overall, 2 rated versions
EPA fuel economy
36 mpgcombined, 2.5L 4-cyl · hybrid FWD · 36 city / 36 hwy

Sources: NHTSA records for the 2021 Toyota Sienna Hybrid (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 45 consumer complaints for the 2021 Toyota Sienna Hybrid. The part named most often is air bags, with 13 complaints (29% of the total), followed by brakes (9) and seats (5). 13 of the complaints include a mileage, and 62% of those were filed for vehicles with under 50,000 miles; the median is 30,800 miles. Of all complaints, 1 a fire, 1 an injury, according to the filers. NHTSA lists 4 recall campaigns and 176 technical service bulletins for this model year. Air bags complaints overlap with 1 recall campaign covering the occupant classification and 1 technical service bulletin filed under the same part. Brakes complaints overlap with 6 technical service bulletins filed under the same part.

Not compared (fewer than 3 comparable model years). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Transmission and drivetrain (2), Back-over prevention (rear camera) (1), Forward collision avoidance (1), Fuel system (1), Lane departure (1), Latches, locks and linkages (1), Tires (1).

Example complaints

Air bags: “Unknown, I got the SRS Airbag system malfunction in my vehicle, I got the same error in my vehicle dashboard a few times in the past but it would go away and since yesterday I have the message in my dashboard”

NHTSA complaint #11737555, filed 2026-05

Brakes: “brake sleeps sometime when i press brake pedal i took car to dealer once,they said need time i did not have much time took another time, they reseted system still... my warranty is over now. rear seat,make shake noise and check rear seat sign on dealer can't find problem. did not do anything since new car. i do not know any other 2021 sienna drivers have same problem.”

NHTSA complaint #11762371, filed 2026-09

Seats: “The contact owns a 2021 Toyota Sienna Hybrid. The contact stated that while the vehicle was parked, the contact observed a melted spot, almost identical on the driver’s and front passenger’s lower back rest on the seats. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 60,000.”

NHTSA complaint #11652064, filed 2025-04, 60,000 miles

Body and structure: “The rear power liftgate hinges on my 2021 Toyota Sienna failed structurally under normal, everyday operation. The power liftgate motor and struts appear to exert uneven or excessive pressure on the rear hatch assembly, causing the metal hinges to crack. Before the failure, we noticed a loud popping/grinding sound when opening the hatch, which quickly progressed to the liftgate binding and misaligning. …”

NHTSA complaint #11763294, filed 2026-09

Mileage when problems were reported

62% of the 13 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 2,000 and 60,000 miles.

38%0–108%10–2515%25–5023%50–758%75–1000%100–1508%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (13 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 30,800 miles.

Complaints by year filed

Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

202020212022202320242025202621
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2021 Toyota Sienna Hybrid. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Sienna Hybrid · VAN AWD★★★★★3 / 4554 · 12.7% risk
Sienna Hybrid · VAN FWD★★★★★3 / 4554 · 14.0% risk

Driver aids listed by NHTSA for the 2021 model year: forward collision warning standard, lane departure warning standard, automatic emergency braking standard.

Neighbouring years: 2022: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2021 Toyota Sienna Hybrid version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
Sienna Hybrid 2WD2.5L 4-cyl · hybridCVT363636$1,850
Sienna Hybrid AWD2.5L 4-cyl · hybridCVT353635$1,900

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2021 Toyota Sienna Hybrid → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 176 on record; the latest 10 are shown.

See all 176 bulletins →

Other model years of the Toyota Sienna Hybrid

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2026183,00015——Too new
202526810,00065—Too new to compareToo new
20247017,82645—Too new to compareToo new
20237144,24235—Not compared (fewer than 3 comparable model years)Too new
20222237,00055——Rising
20214530,8004536Not compared (fewer than 3 comparable model years)Rising

All Toyota Sienna Hybrid model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2021 Toyota Sienna Hybrid have?

NHTSA recorded 45 consumer complaints for the 2021 Toyota Sienna Hybrid as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2021 Toyota Sienna Hybrid is reported most often?

Air bags is named most often, in 13 complaints (29% of the total), followed by brakes with 9.

Has the 2021 Toyota Sienna Hybrid been recalled?

NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2021 Toyota Sienna Hybrid do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2021 Toyota Sienna Hybrid 5 out of 5 stars overall, across 2 rated versions (body style and drive). Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2021 Toyota Sienna Hybrid get?

The EPA rates the 2021 Toyota Sienna Hybrid (Sienna Hybrid 2WD, 2.5L 4-cyl · hybrid) at 36 mpg combined, 36 city and 36 highway, with an estimated annual fuel cost of $1,850 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2021 Toyota Sienna Hybrid reported?

Among the 13 complaints that include a mileage, the median is 30,800 miles and the middle half falls between 2,000 and 60,000 miles; 62% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.