YearToAvoid

2011 Toyota Sienna Engine Problems

NHTSA lists 48 engine complaints for the 2011 Toyota Sienna, 8% of all complaints that year, with a median failure mileage of 34,450. Owners reported sudden unintended acceleration and engine fires, including some at very low mileage. No related recall is listed in NHTSA data.

Engine complaints
48
8% of 614
Crashes reported
10
Fires reported
4
Injuries reported
7
Median mileage
34,450 mi
Related recalls
0

Typical engine symptoms owners report

  • Owners report sudden unintended acceleration at low speeds, such as while pulling into a driveway or parking spot, sometimes ending in a crash into a fixed object.
  • Multiple owners describe the vehicle accelerating even while the brake pedal was pressed, with the vehicle failing to slow down.
  • Several complaints describe engine compartment fires or smoke, including one reported at 220 miles and another at 6,100 miles, with no prior warning lights.
  • One owner reported the engine stalling along with all warning lights illuminating before smoke and fire appeared from the hood.
  • A separate complaint describes the vehicle rolling forward on its own after being put in park, without driver input.

When 2011 Toyota Sienna engine complaints were filed

First complaint May 25, 2010, latest Apr 17, 2026.

2011 Toyota Sienna engine complaints: complaints filed per month3May 2010May 2011Sep 2012Aug 2014Jan 2017Sep 2018Nov 2020
48 complaints filed with NHTSA from May 2010 to Apr 2026; peak Jun 2012 (3).

Engine recalls for the 2011 Toyota Sienna

No safety recalls on record for this model year.

Engine complaints by Sienna model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 201027 (16%)
  2. 201148 (8%)
  3. 201221 (9%)
  4. 201313 (7%)
  5. 201421 (13%)
  6. 201518 (8%)
  7. 20165 (7%)
  8. 201720 (13%)
  9. 201810 (14%)
  10. 20196 (13%)
  11. 20206 (16%)

Frequently asked questions

How many engine complaints does NHTSA have for the 2011 Toyota Sienna?
NHTSA lists 48 engine-related complaints for the 2011 Toyota Sienna, which is 8% of all complaints filed for that model year.
Is there a recall for the 2011 Toyota Sienna engine?
No related recall is listed in the NHTSA data provided for this engine complaint category.
At what mileage do 2011 Sienna engine problems usually appear?
The median mileage at failure among reported engine complaints is 34,450 miles.
Did the 2011 Sienna engine complaints involve crashes or fires?
Yes, NHTSA data tied to this engine complaint category includes 10 crashes, 4 fires, and 7 injuries.
How does the 2011 Sienna compare to other Sienna years for engine complaints?
The 2011 Sienna had 48 engine complaints (8% share), higher in raw count than most other years listed, such as 2010 with 27 complaints (16% share) and 2014 with 21 complaints (13% share).

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.