This page covers 4 recalls, 172 owner complaints and EPA fuel economy for the 2010 Toyota Sienna.
18 mpg combined
13.1 L/100km
Minivan - 4WD
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted.
By complaint volume, the 2010 Sienna's most-reported issue centers on structure, specifically the sliding door system. Owners frequently describe the power sliding doors failing to open, close, or latch properly, with some reporting doors that open unexpectedly or won't stay closed while driving. Powertrain complaints make up the second-largest named group, with owners describing stalling, loss of power, and in some cases oil leaks or pressure loss without any prior warning light. A smaller cluster of complaints involves vehicle speed control, where owners report unintended behavior or loss of throttle response. The sliding door problems appear across a wide range of mileage and driving conditions, and several owners note that warning lights for traction control or other systems illuminate alongside the powertrain events.
172
Total Complaints
15
Crash-Related
2
Fire-Related
9
With Injuries
By System
The 2010 Toyota Sienna has 4 recalls, the most serious being a corroded spare tire carrier cable that can break and send the spare tire separating from the underside of the vehicle while driving, creating a crash hazard for following traffic. This applies to vehicles in northern and mid-Atlantic states where road salt is common, and prior repair attempts may not have fully resolved the issue across all affected model years. On the fire side, certain vehicles equipped with aftermarket seat heaters have a copper heating element that can short circuit and start a fire. There is also a transmission concern: the shift lock assembly can allow the gear selector to move out of Park without the brake pedal being pressed, meaning the vehicle can roll if the parking brake is not also applied.
At a glance
What can fail
A faulty shift lock solenoid allows the shift lever to move out of Park without pressing the brake pedal, which is a safety feature designed to prevent unintended vehicle movement.
What the fix does
Dealers will replace the shift lock solenoid and reapply grease to restore proper shift lock function.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The electrical wiring in aftermarket seat heaters with copper strand heating elements can be damaged when the seat cushion is compressed, potentially causing electrical issues.
What the fix does
Dealers will disconnect the seat heaters at no charge and refund the purchase price of the accessory.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The cable attaching the spare tire carrier under the vehicle may corrode from road salt exposure in certain regions, potentially causing the spare tire to become insecure.
What the fix does
Dealers will relocate the spare tire to the luggage compartment and replace the spare tire carrier assembly with an improved version, free of charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The spare tire carrier cable underneath the vehicle can corrode from road salt spray in cold climates, potentially causing the cable to fail.
What the fix does
Dealers will inspect the spare tire carrier for corrosion. Toyota will send a second notice with permanent repair instructions when available.
Summarized — see the official notice for exact wording, dates, and contacts.
