Is the Toyota Sienna reliable?
55% of the 49 we inspected scored 60/100 or higher, with an average of 62/100 — it scores about average.
49
Cars inspectedreal pre-purchase inspections62/100
Average conditionall cars we check: 61/10055%
In good shape (60+)all cars we check: 56%Across 49 used Toyota Siennas we inspected, this model scores about average — average condition 62/100 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
49%
Tires condition & wear · Brakes and tires
43%
Low coolant / cooling system issues · Engine
33%
Active error codes · Electronic equipment
29%
Cracked or torn suspension bushings · Suspension
27%
Share of inspected Toyota Siennas where each item was flagged.
How they score
Excellent 31%
Good 24%
Mediocre 22%
Poor 22%
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
Good cars by age
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
55 cars · 65% good
Highlander
43 cars · 63% good
Corolla
121 cars · 62% good
Tundra
59 cars · 55% good
Camry
123 cars · 54% 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
2013 Toyota Sienna · 157k mi — flagged: abnormal noise, crankcase gas pressure, oil leaks. Inspected Oct 31.
2020 Toyota Sienna · 66k mi — flagged: dirty or low engine oil, battery condition, boots. Inspected Jul 11.
The bottom line
Oil leaks hit 49% of these vans, and cooling trouble shows up often enough that the engine bay is the first place you spend time. Tires and cracked bushings are the next money items — easy to see, expensive if you shrug. Structural repairs are uncommon, and cleared codes are less common than on the wider used fleet, so a clean scan means more here than on most lots. Repaint is still routine, so shiny paint is not a reason to pay up. Stack an oil leak with low coolant and an active code and you negotiate hard or walk; if those three are clean, this is a fair buy.
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 (49%), tires condition & wear (43%), 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.
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Based on 49 inspections · updated Nov 11, 2026
