2018 Toyota Sienna: owner complaints and recalls

Owners have filed 69 complaints about the 2018 Toyota Sienna and NHTSA has issued 7 recall campaigns. The most-reported system is power train, named in 18 of them.

69
Complaints
7
Recalls
5
Crash reports
0
Fire reports
6
Injuries
98.6
Severity index

Severity index 98.6 - High. It weights crashes, fires, injuries and fatalities per 100 complaints, so a vehicle attracting serious reports scores above one attracting many trivial ones (how this is calculated).

Middle half of all tracked vehiclesThis vehicle: 98.6p25 35p75 96cleanestworst
Where the 2018 Toyota Sienna sits against the quartiles of every vehicle we track.

Among the 121 2018 vehicles we track with at least 40 complaints on file, the 2018 Toyota Sienna ranks 23 of 121 by severity, where 1 is the worst. Its severity is higher than 81% of its model-year peers. See the full 2018 ranking.

What actually fails

Power TrainPower Train: 18 complaints (26.1%)18 26%Unknown Or OtherUnknown Or Other: 13 complaints (18.8%)13 19%Fuel/Propulsion SystemFuel/Propulsion System: 9 complaints (13.0%)9 13%Electrical SystemElectrical System: 6 complaints (8.7%)6 9%EngineEngine: 5 complaints (7.2%)5 7%Air BagsAir Bags: 5 complaints (7.2%)5 7%StructureStructure: 5 complaints (7.2%)5 7%Vehicle Speed ControlVehicle Speed Control: 5 complaints (7.2%)5 7%
Systems named in complaints. One complaint can name several, so shares overlap.
ComponentComplaintsShare of complaints citing it
POWER TRAIN1826.1%
UNKNOWN OR OTHER1318.8%
FUEL/PROPULSION SYSTEM913.0%
ELECTRICAL SYSTEM68.7%
ENGINE57.2%
AIR BAGS57.2%
STRUCTURE57.2%
VEHICLE SPEED CONTROL57.2%

Complaints filed per year

09182018: 92019: 82020: 182021: 92022: 32023: 42024: 72025: 52026: 6 (partial year)18192018212223242526
Complaints filed per calendar year, not model year. The hatched bar is the current year and is still incomplete.
YearComplaints
20189
20198
202018
20219
20223
20234
20247
20255
2026 (year to date)6
Complaint volume is declining, consistent with a defect that was addressed by recall or that affected early builds.

Recall campaigns

CampaignReportedComponentSummary
20V68200004/11/2020FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMPToyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna,
20V01200013/01/2020FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMPToyota Motor Engineering & Manufacturing (Toyota) recalled certain 2018-2019 4Runner, Highlander, Camry, Land Cruiser, Sequoia, Sienna, Tacoma and Tundra, and Lexus RC 300, RC 350, GS 350, GX 460, IS 300, LC 500, LS 500, LX 570, RX 350L, and 2019 Toyota Avalon and Corolla, and ce
19V53200016/07/2019STEERINGBraun Corporation (Braun) is recalling certain modified 2017-2020 Toyota Sienna vehicles. The steering shaft extensions may have been improperly manufactured, possibly causing the extensions to fracture.
19V41000004/06/2019SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGSBraun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.
19V50300028/06/2019EQUIPMENT:OTHER:LABELSSoutheast Toyota Distributors, LLC (SET) is recalling certain 2017-2019 Toyota Camry, Corolla, Rav4, Sienna, and Yaris iA vehicles equipped with factory-installed floor mats. The load carrying capacity modification label may be incorrect. As such, these vehicles fail to comply
19V55300025/07/2019SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGSVantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.
18V13000022/02/2018WHEELSToyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Sienna vehicles built with a specific lot of 10-spoke alloy wheels from one production facility. These wheels may not have been properly cooled during manufacturing. As a result, the wheels may c
Source. US National Highway Traffic Safety Administration public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-07-25. Complaints are unverified consumer reports; volume is influenced by how many units were sold and how long the vehicle has been on the road. Not affiliated with NHTSA or any manufacturer.