NHTSA lists 6 safety recalls and 233 owner complaints for the 2015 Toyota Sienna. Most complaints involve structure (61) and electrical system (44). The EPA rates it 19–21 mpg combined, and NHTSA gives it 5 stars overall.
Vantage Mobility International, LLC (Vantage) is recalling certain 2012-2018 AMS Genesis wheelchair vans, built on a Toyota Sienna vehicles. The rubber brake hoses that attach to the rear wheel assembly may be too short, causing them to rub against the rear axle trailing arm.
Braun Corporation (Braun) is recalling certain 2014-2019 Toyota Sienna mobility van conversions. The brake lines may have incorrect tube nut fittings installed, which may cause a pressure drop within the braking system.
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2011-2016 Toyota Sienna minivans manufactured January 4, 2010, to August 12, 2016. If the power sliding door is unable to be opened when commanded, such as if the door is frozen shut, the door may subsequently open unexpectedly, possibly while the vehicle is moving.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Sienna model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 1998 | 302 |
| 1999 | 217 |
| 2000 | 374 |
| 2001 | 185 |
| 2002 | 207 |
| 2003 | 116 |
| 2004 | 2,062 |
| 2005 | 1,130 |
| 2006 | 1,017 |
| 2007 | 364 |
| 2008 | 429 |
| 2009 | 207 |
| 2010 | 172 |
| 2011 | 615 |
| 2012 | 247 |
| 2013 | 183 |
| 2014 | 164 |
| 2015 | 233 |
| 2016 | 76 |
| 2017 | 159 |
| 2018 | 72 |
| 2019 | 46 |
| 2020 | 38 |
| 2024 | 0 |
| 2025 | 0 |
“This is the 2nd Occurrence where Sliding Door Cable Breaks and the doors are disabled where you can not open or close the sliding door and its jammed shut. Attempts to press the Power Sliding door buttons do not work. This is the 2nd Occurrence on this Vehicle. The First occurrence happened approximately 3 years ago with the Driver Sliding Door and was report to Holman Toyota , 1301 NJ 73, Mt. Laurel township, NJ 08054. Now the passenger sliding door cable is broken and the door is jammed shut also”
“Odometer Fraud. The contact purchased a 2015 Toyota Sienna. The vehicle was a private sale. The contact stated that at the time of purchase, the mileage was 92,862. The contact later purchased a Carfax Report which indicated that the last odometer report in 2024 showed that the mileage was 205,000. The seller was made aware of the mileage discrepancy.”
“Component Failed & Availability: The engine on my 2015 Toyota Sienna (99,000 miles) catastrophically failed and is completely seized. The vehicle and engine are in my possession and are fully available for physical inspection. Safety Risk: The vehicle shut down completely while in motion, causing an immediate loss of motive power, power steering, and power braking assistance. Had this un-warned seizure occurred at highway speeds rather than a parking lot, the sudden loss of vehicle control would have posed a severe crash hazard. Reproduced/Confirmed: Yes. A certified mechanic removed the serpentine belt, attempted to turn the engine with a lock bar, and confirmed the engine block is completely seized. The local dealership, Fred Haas ToyotaWorld, also confirmed the vehicle does not run. Inspections: The vehicle was inspected by my independent mechanic and the local dealership. However, Toyota Corporate formally refused my request to dispatch a field engineer to inspect the defective engine. Prior Warnings: There were absolutely no warning lamps, check engine lights, temperature spikes, or abnormal noises prior to the failure. The engine seized instantly and without warning.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Sienna 2WD Auto (S6), 6 cyl, 3.5 L · Front-Wheel Drive | 18 | 25 | 21 | $3,050 | 430 |
| Sienna AWD Auto (S6), 6 cyl, 3.5 L · All-Wheel Drive | 16 | 23 | 19 | $3,400 | 467 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
6 safety recalls as of Nov 3, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 233 complaints with NHTSA. The most-cited components are structure (61), electrical system (44), engine (16). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2015 Toyota Sienna at 19–21 mpg combined, depending on engine and drivetrain (2 versions rated).
NHTSA's New Car Assessment Program gives the 2015 Toyota Sienna 5 out of 5 stars overall.