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Toyota SiennaModel year report

2020 Toyota Sienna Problems

Compared with other Toyota Sienna years

Fewer complaints than typical for this model

0/100 0.3× a typical year · 50 = typical

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
38filed with NHTSA
Median mileage
14,571miles, 11 complaints with mileage
Recalls
2campaigns on record
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA crash rating
5 / 5stars overall, 2 rated versions
EPA fuel economy
21 mpgcombined, 3.5L 6-cyl FWD · 19 city / 26 hwy

Sources: NHTSA records for the 2020 Toyota Sienna (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 38 consumer complaints for the 2020 Toyota Sienna. The part named most often is fuel system, with 8 complaints (21% of the total), followed by transmission and drivetrain (8) and electrical system (7). 11 of the complaints include a mileage, and 82% of those were filed for vehicles with under 50,000 miles; the median is 14,571 miles. Of all complaints, 1 a fire, according to the filers. NHTSA lists 2 recall campaigns and 153 technical service bulletins for this model year. Fuel system complaints overlap with 1 recall campaign covering the fuel pump and 3 technical service bulletins filed under the same part. Transmission and drivetrain complaints overlap with 2 technical service bulletins filed under the same part. Compared with the other 14 Toyota Sienna model years that have at least 25 complaints and are old enough to compare, this one scores 0 out of 100, where 50 is a typical year for the model (fewer complaints than typical for this model). The comparison allows for the era and for how long each year has had to collect complaints, but not for how many vehicles were sold.

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: Seats (1), Visibility (wipers, defrost, mirrors) (1), Wheels (1).

Example complaints

Fuel system: “The fuel pump needs replaced and has been recalled. The recall can cause an increased risk of a crash. We still haven't had this replaced in a timely manner and it's not safe for my small children.”

NHTSA complaint #11405145, filed 2021-03, 20,000 miles

Transmission and drivetrain: “Purchased rental program vehicle and immediately had vehicle serviced at the dealership. Received a phone call from service advisor that automotive technician had found a mechanical problem. It was stated that a hose had come loose/apart in the axle and fluid was leaking. Now, we had purchased vehicle day before and the following day dropped vehicle for service at dealership. As a consumer, I need a maintenance baseline. The brief time driving the vehicle, there was no visible/audible clue that mechanical issue was present. …”

NHTSA complaint #11384761, filed 2020-12, 30,723 miles

Electrical system: “While driving on hwy, suddenly engine light came on. Also I lost acceleration. When I press gas pedal no response from car. Vehicle was slowing down so pulled into gas station. When I stopped the car, engine light was still on, traction light came on and steering system light came on. Also engine light was solid and it was not flashing”

NHTSA complaint #11329923, filed 2020-06, 2,644 miles

Engine: “Car has about 16,000 miles. When accelerating slowly from a stop, vehicle hesitates, shakes, and runs rough as it slowly progresses thru first, second, & third gears. After transmission gets in fourth gear, hesitation and roughness goes away. This issue is rapidly getting worse.”

NHTSA complaint #11425334, filed 2021-07

Mileage when problems were reported

82% of the 11 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 4,000 and 30,723 miles.

36%0–1027%10–2518%25–509%50–750%75–1000%100–1509%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (11 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 14,571 miles.

Complaints by year filed

Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.

201920202021820222023202420252026
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 2020 Toyota Sienna. 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 · VAN AWD★★★★★5 / 4554 · 14.0% risk
Sienna · VAN FWD★★★★★5 / 4554 · 14.0% risk

Driver aids listed by NHTSA for the 2020 model year: forward collision warning standard, lane departure warning standard, automatic emergency braking standard.

Neighbouring years: 2019: 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 2020 Toyota Sienna 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 2WD3.5L 6-cyl8-speed automatic192621$3,200
Sienna AWD3.5L 6-cyl8-speed automatic182420$3,350

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 2020 Toyota Sienna → · 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. 153 on record; the latest 10 are shown.

See all 153 bulletins →

Other model years of the Toyota Sienna

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20221192,0002—3648 · TypicalRising
202116528,0001——50 · TypicalRising
20203814,57125210 · FewerStable
20194522,250752218 · FewerFalling
20187229,000752229 · FewerFalling
201715721,8001052265 · MoreRising
20167619,000552144 · TypicalStable
201523330,000652179 · MoreStable
201416348,212652132 · FewerFalling
201318348,918642136 · TypicalFalling
201224758,000942154 · TypicalFalling
201161556,00014421100 · MoreFalling
201017267,5008—1958 · TypicalFalling
200920784,42510—1954 · TypicalFalling
200842977,0009—1977 · MoreFalling
200736468,00010—19Not compared (before 2008)Falling
20061,01770,80011—19Not compared (before 2008)Falling
20051,13066,00012—19Not compared (before 2008)Falling
20042,06275,00010—20Not compared (before 2008)Falling
200310554,0001—19Not compared (before 2008)Falling
200218166,8461—19Not compared (before 2008)Stable
200118066,2682—19Not compared (before 2008)Falling
200036381,6501—19Not compared (before 2008)Rising
199921590,0002—19Not compared (before 2008)Falling
199829478,8502—19Not compared (before 2008)Rising

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

Frequently asked questions

How many NHTSA complaints does the 2020 Toyota Sienna have?

NHTSA recorded 38 consumer complaints for the 2020 Toyota Sienna as of Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2020 Toyota Sienna is reported most often?

Fuel system is named most often, in 8 complaints (21% of the total), followed by transmission and drivetrain with 8.

Has the 2020 Toyota Sienna been recalled?

NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2020 Toyota Sienna do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2020 Toyota Sienna 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 2020 Toyota Sienna get?

The EPA rates the 2020 Toyota Sienna (Sienna 2WD, 3.5L 6-cyl) at 21 mpg combined, 19 city and 26 highway, with an estimated annual fuel cost of $3,200 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2020 Toyota Sienna reported?

Among the 11 complaints that include a mileage, the median is 14,571 miles and the middle half falls between 4,000 and 30,723 miles; 82% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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.