2014 Toyota Sienna engine problems
11 owner complaints filed with NHTSA name the engine on the 2014 Toyota Sienna — 7% of all complaints for this model year.
What owners report
“Sluggish start when hot - fuel pump leak into engine when hot, causing starter issues, wears out starter, causes other stress on engine. Common issue in Toyota Siennas. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)”
filed Jul 6, 2026
“The contact owns a 2014 Toyota Sienna. The contact stated that while driving 70 MPH, there was an audible alarm coming from the vehicle, alerting the contact that the door was ajar. The passenger’s side slide door opened independently while the vehicle was in motion. The vehicle was modified to…”
filed Sep 5, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Sienna years
| Year | Reports | Share |
|---|---|---|
| 2022 Sienna | 5 | 4% |
| 2021 Sienna | 8 | 5% |
| 2020 Sienna | 6 | 17% |
| 2019 Sienna | 4 | 9% |
| 2018 Sienna | 5 | 7% |
| 2017 Sienna | 15 | 10% |
| 2016 Sienna | 4 | 5% |
| 2015 Sienna | 15 | 7% |
| 2013 Sienna | 7 | 4% |
| 2012 Sienna | 9 | 4% |
| 2011 Sienna | 23 | 4% |
| 2010 Sienna | 5 | 3% |
Other reported problem areas on the 2014 Toyota Sienna
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.