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Toyota Sienna Reliability by Year

Every gasoline Sienna model year from 2004 to 2020, scored on reported failures weighted against how many were sold — and ranked against every other Multi-Purposes & Minivans of the same year.

Scored separately as its own vehicle: Sienna Hybrid (2021–2025).

The short answer

Best model year
2016
#1 of 11 that year
Year to avoid
2004
#14 of 16 that year
Latest scored
2020
#3 of 7

Across 17 scored model years the Sienna needs fixing less often than its class, and repairs cost about what you would expect. The spread between years is what matters: 2016 is its strongest, 2004 its weakest.

Every model year, scored

Longer bar is better. Rank is against every Multi-Purposes & Minivans sold that same model year.

YearRelative standingClass rankPctl
2004#14 /1613thAvoid
2005#12 /1835th
2006#11 /1841th
2007#6 /1972th
2008#7 /1660th
2009#2 /1392th
2010#1 /11100th
2011#4 /1067th
2012#1 /11100th
2013#1 /10100th
2014#2 /1291th
2015#4 /1170th
2016#1 /11100thBest year
2017#4 /1067th
2018#3 /1078th
2019#2 /783th
2020#3 /767th

The line held a weak position through 2005, ran middling in 2006–2007, and has been strong from 2008 on. This 2020 car falls in a strong stretch.

What tends to break

All 12 systems, measured against the class average for each model year.

Every Sienna model year is scored across 12 separate systems — engine, transmission, brakes, electrical, steering and suspension, structure, interior, and five more. Each system is compared against how often that same system fails on the average Multi-Purposes & Minivans of the same year, so a common failure is judged against how common it is everywhere else.

Across the last three model years (2018–2020), no single system stands out. All measured systems draw issue reports less often than the same systems on the average Multi-Purposes & Minivans of their year — a cleaner sheet than most of this class manages.

Full Dashboard Preview

Real charts, sample vehicle. Open the lookup to see these for your Sienna.

Reliability Matrix Sample Chart

2018 Mid-Size SUVs

Your Sienna is plotted against 7 rivals from 2020.

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better than classtypicalworsebubble = units sold

System Breakdown Sample Chart

2018 Mitsubishi Outlander

Your Sienna is scored the same way, for every model year.

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below class averageabove class average

Common questions

What is the best year for a used Toyota Sienna?

2016 is the strongest Sienna model year on record, ranking #1 of 11 Multi-Purposes & Minivanss that year.

Which Toyota Sienna years should I avoid?

2004 is the weakest year in the model's history, ranking #14 of 16.

Is the latest Sienna reliable?

The 2020 Sienna ranks #3 of 7 Multi-Purposes & Minivanss — the upper half of its class.

Where does this data come from?

Failure reports filed with NHTSA — submitted by vehicle owners and repair shops alike — weighted against US sales volumes so a high-volume model is not penalised for selling well, then benchmarked within segment and model year.

See the full picture for your Sienna

All 12 systems scored, the whole class plotted, and a downloadable Full Model Report for any year — 6,000+ vehicles in the dashboard.

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How this was built. Scores derive from failure reports filed with NHTSA — submitted by vehicle owners and repair shops alike — weighted against US sales volumes and benchmarked within segment and model year. We measure two separate things: Fix Frequency — how often a vehicle needs fixing — and Fix Severity — how costly those fixes are. These figures describe a model line, not the specific vehicle in front of you; trim, mileage and service history still decide an individual car.