2018 Toyota Sienna problems: engine and transmission complaints and recalls
48% of relevant owner complaints filed with NHTSA on the 2018 Toyota Sienna are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.
Worse than 62% of the 1,790 model years we track (2010–2023).
Excludes 6 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 44%).
Does the 2018 Toyota Sienna have transmission problems?
Owner complaints say yes, as a model-year pattern. 32 of 66 relevant complaints filed with NHTSA about the 2018 Toyota Sienna concern the engine, transmission or fuel system (48%), and the largest group is filed under power train (20). For comparison, the 2017 scores 43% and the 2019 scores 38%. On a test drive, check for shuddering, slipping, delayed or harsh shifts, or a whine at speed. 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.
The rest of the picture on the 2018 Toyota Sienna
- What the repair costs. Typical transmission repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Every owner quote, 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 32 drivetrain complaints. The full report shows them, with quotes about the engine in the car you are looking at first.
Are there engine or transmission recalls on the 2018 Toyota Sienna?
Yes. NHTSA lists 2 recall campaigns on the 2018 Toyota Sienna involving the engine, transmission or fuel system, out of 7 in total. 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.
Toyota 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, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020…
Risk: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.
Fix: Toyota will notify owners, and dealers will replace the fuel pump assembly with an improved one, free of charge. Owners of specific models were notified that remedy parts were available starting January 21, 2021.…
Toyota 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 certain Lexus NX 300, and ES 350 vehicles on January 13, 2020. On March 4, 2020, Toyota expanded the recall to include certain 2014-2015…
Risk: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.
Fix: Toyota will notify owners, and dealers will replace the fuel pump, free of charge. The recall began May 4, 2020. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at…
5 other recalls on this model year (airbags, lighting, brakes and the rest)
Source: NHTSA recall campaigns filed against this year, make and model. Checked October 17, 2026.
Checking one particular 2018 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.
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Does the 2018 Toyota Sienna have transmission problems?
Owner complaints say yes, as a model-year pattern. 32 of 66 relevant complaints filed with NHTSA about the 2018 Toyota Sienna concern the engine, transmission or fuel system (48%). Before buying one, have an independent mechanic check the transmission and ask the seller whether it has been repaired or replaced.
Are there engine or transmission recalls on the 2018 Toyota Sienna?
Yes. NHTSA lists 2 recall campaigns on the 2018 Toyota Sienna involving the engine, transmission or fuel system, out of 7 in total: 20V682000 (fuel system, gasoline: delivery: fuel pump), 20V012000 (fuel system, gasoline: delivery: fuel pump). Whether a specific car still has one open depends on its VIN.
Which Toyota Sienna years are better?
Among the Toyota Sienna years we track, the 2022 (9%), the 2016 (10%) and the 2021 (11%) have a lower engine and transmission complaint share than the 2018 (48%). Manufacturers fix things mid-generation, so the year before or after can be a different car.
Should I buy a 2018 Toyota Sienna?
That depends on the car in front of you, not just the model year. The 2018 Toyota Sienna has an elevated transmission complaint pattern, so treat it as a car that needs proof: service records showing transmission work, a cold-start test drive, and an independent pre-purchase inspection focused on the transmission. A well-kept or already-repaired example can be a fine car; an unknown one is a gamble.
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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.