Is the Toyota Sienna reliable?
56% of the 48 we inspected scored 60/100 or higher, with an average of 63/100 — it scores about average.
48
Cars inspectedreal pre-purchase inspections63/100
Average conditionall cars we check: 61/10056%
In good shape (60+)all cars we check: 56%Across 48 used Toyota Siennas we inspected, this model scores about average — average condition 63/100 vs 61 for all cars we check. Every number on this page comes from real pre-purchase inspections — cars people were about to buy and paid an independent inspector to go through point by point, engine to underbody, paint depth to error codes. Not owner surveys, not warranty statistics, not forum lore: what we actually found.
What we found
Most common faults
Oil leaks · Engine
48%
Tires condition & wear · Brakes and tires
42%
Low coolant / cooling system issues · Engine
33%
Active error codes · Electronic equipment
29%
Fluid leaks · Steering (hydraulic power)
27%
Share of inspected Toyota Siennas where each item was flagged.
How they score
Excellent 31%
Good 25%
Mediocre 23%
Poor 21%
Hidden history
What the seller might not mention — how often we find it on this model.
69%had a repainted or replaced panelall cars: 74%
2%showed structural repairall cars: 4%
10%had fault codes recently clearedall cars: 24%
How long does a Sienna stay good?
Good cars by mileage
Share of Toyota Siennas in good shape (scoring 60+/100) by mileage and by age when we inspected them (each dot ≥5 cars; a band under 20 cars follows the nearby bands, so a run above the all-cars line stays above it, and a band of 20 or more uses the rate we measured; where a band has too few cars, the line follows the trend between the bands on either side; rolled-back odometers excluded from the mileage curve). The dashed grey curve is all cars we check.
More on Toyota
RAV4
56 cars · 80% good
Prius
65 cars · 68% good
Tacoma
53 cars · 65% good
Highlander
41 cars · 64% good
Corolla
117 cars · 62% good
Camry
117 cars · 55% good
Tundra
57 cars · 55% good
Avalon
30 cars · 50% good
4Runner
70 cars · 47% good
Other Toyota models we've inspected — or see the full Toyota profile.
Straight from recent Toyota Sienna reports
2020 Toyota Sienna · 66k mi — flagged: dirty or low engine oil, battery condition, boots. Inspected Jul 11.
2013 Toyota Sienna · 168k mi — flagged: engine control module, cv joints, tire pressure monitoring system. Inspected Jul 10.
The bottom line
The spread here is the story: some of these vans are solid, others are tired, and the difference shows up under the hood more than in the body. Structural repairs barely appear and cleared codes are uncommon, so an active fault code is worth believing. Put oil leaks and cooling first — oil seepage on nearly half the cars, cooling trouble on a third — and treat a wet engine plus low coolant as grounds to negotiate hard or walk. Check tires and hydraulic steering leaks before you agree on price. A dry powertrain, a clean scan, and usable tires are worth buying.
FAQ
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What are the most common problems on a used Toyota Sienna?
The items we flag most often are oil leaks (48%), tires condition & wear (42%), low coolant / cooling system issues (33%). Have these checked before buying.
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Should I worry about cleared fault codes?
On 10% of these cars the ECU codes had been erased shortly before sale, which can hide active faults. Ask for a diagnostic scan and start the engine from cold.
Thinking of buying a Toyota Sienna? Get the exact car inspected before you pay.
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Based on 48 inspections · updated Oct 22, 2026
