2015 Toyota Sienna Transmission and drivetrain Problems
- Complaints
- 12about this part
- Share
- 5%of 233 total for the year
- Median mileage
- 33,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 12 complaints about the transmission and drivetrain of the 2015 Toyota Sienna, 5% of the 233 complaints for this model year. Where a mileage was given, the median is 33,000 miles. 2 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My Sienna van sometimes responds very late to acceleration. This becomes a problem on highways specifically during the merging. Acceleration paddle has to be pressed very hard, for first few seconds there is no response from engine then latter it suddenly accelerates. This makes you miss judge the time required to merge on highways and can cause accidents. This has been happening since few months. I am providing tentative date below.”
NHTSA complaint #11316319, filed 2020-03, 48,000 miles“I have a 2015 Toyota Sienna xle with 35,800 miles. - (no specific conditions or driving styles) it is on it's third transmission (second replacement was at 29,800 miles) - newest recall on the side doors opening randomly. - (no specific conditions or driving styles. Happens completely randomly) cruise control lever light flickering. It was replaced three times now. It was just replaced the third time recently, so I'll see if it happens again. - (no specific conditions or driving styles. …”
NHTSA complaint #10990866, filed 2017-05, 7,000 miles“When ambient temp is below freezing and vehicle is cold the engine revs up from below 1000 RPM to nearly 1500 RPM when coming to a stop and the vehicle wants to lurch forward. I must be on the brake to prevent lurching forward. It revs up as the transmission is downshifting. Dealer says it is normal. This is nonsense.”
NHTSA complaint #10969454, filed 2017-03, 18,000 miles“I have a 2015 Toyota Sienna LE that I purchased new from the dealer. The original Michelin tires had excessive wear after less than 2yrs and ~28K miles. I replaced these with Continental tires(rated for 70K miles) and after 2years and at ~63K on the vehicle miles I had to replace those with General Altimax (rated for 75K miles). Each time tires were replaced it received and alignment. I now need to replace the third set of tires at ~88k for set number four. …”
NHTSA complaint #11430201, filed 2021-08“My husband parked our minivan and came in to pick up the kids. While he was inside the library, the van went out of park and hit a fire truck in the parking lot. It seems this has been an issue with Toyota siennas in the past but I do not see it reported yet for its year 2015. Our van had damage to the front fender, hood, and surrounding area and needed repair. We obviously didn’t have any idea this was possible nor noticed anything since purchasing this van recently. I have read online that a Toyota sienna cannot be turned off without being in park. …”
NHTSA complaint #11679069, filed 2025-08Related service bulletins
- 10201352Jul 6, 2021TT: Some 2014-2021 model year vehicles equipped with Dynamic Torque Control AWD system may experience a ?Noise? or ?Abnormal Operation? condition from the rear differential front…
- 10164330Jul 1, 2019TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2022 | 2 | 2% |
| 2021 | 8 | 5% |
| 2020 | 8 | 21% |
| 2019 | 7 | 15% |
| 2018 | 20 | 28% |
| 2017 | 38 | 24% |
| 2016 | 3 | 4% |
| 2015 | 12 | 5% |
| 2014 | 7 | 4% |
| 2013 | 14 | 8% |
| 2012 | 17 | 7% |
| 2011 | 30 | 5% |
| 2010 | 17 | 10% |
| 2009 | 6 | 3% |
| 2008 | 38 | 9% |
| 2007 | 31 | 9% |
| 2006 | 40 | 4% |
| 2005 | 48 | 4% |
| 2004 | 89 | 4% |
| 2003 | 10 | 10% |
| 2002 | 13 | 7% |
| 2001 | 6 | 3% |
| 2000 | 67 | 18% |
| 1999 | 11 | 5% |
| 1998 | 23 | 8% |
Other parts of the 2015 Toyota Sienna
61 complaintsOther or unknown
48 complaintsElectrical system
44 complaintsBrakes
18 complaintsEngine
16 complaintsWheels
14 complaintsSteering
11 complaintsAir bags
9 complaintsSeat belts
8 complaintsSuspension
8 complaintsFuel system
7 complaintsExterior lighting
6 complaints
← All problems reported for the 2015 Toyota Sienna
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology