YearToAvoid

2011 Mercury Mariner Transmission & Powertrain Problems

Owners filed 24 Transmission & Powertrain complaints for the 2011 Mercury Mariner, 28% of all 87 complaints that year. The dominant pattern is sudden stalling or power loss tied to the throttle body, with a wrench-light warning, at a median 46,000 miles. NHTSA lists no related recalls for this issue.

Transmission & Powertrain complaints
24
28% of 87 complaints
All complaints this year
87
Crashes reported
0
Fires reported
0
Injuries reported
0
Median mileage
46,000 mi
Related recalls
0

Typical transmission symptoms owners report

  • Sudden loss of power or stalling at highway speed, often while driving 55-70 mph, accompanied by an orange or yellow wrench warning light.
  • Vehicle drops into a low-power or limp mode with little to no throttle response when the accelerator is pressed.
  • Engine surges or the car jolts and lurches forward unpredictably when pulling out from a stop or parking lot.
  • Owners report the issue traces to a failing electric throttle body, sometimes replaced multiple times with different part numbers.
  • Problem is often intermittent at first, with the vehicle restarting and running normally for a period before stalling again.
  • Dealers reset diagnostic codes such as P2111 but the stalling recurs across repeat visits.

When 2011 Mercury Mariner transmission complaints were filed

First complaint Nov 1, 2012, latest Mar 13, 2019.

2011 Mercury Mariner transmission & powertrain complaints: complaints filed per month4Nov 2012Jun 2013Sep 2013May 2014Jul 2016Jan 2017
24 complaints filed with NHTSA from Nov 2012 to Mar 2019; peak Jun 2013 (4).

Transmission & Powertrain recalls for the 2011 Mercury Mariner

No safety recalls on record for this model year.

Transmission & Powertrain complaints by Mariner model year

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

  1. 200515 (22%)
  2. 200611 (17%)
  3. 200711 (33%)
  4. 200866 (14%)
  5. 200944 (14%)
  6. 201060 (22%)
  7. 201124 (28%)

Frequently asked questions

What transmission or powertrain problems do 2011 Mercury Mariner owners report?
Owners most often describe sudden stalling or power loss on the highway, accompanied by a wrench warning light and traced by dealers to the electric throttle body.
Is there a recall for the 2011 Mercury Mariner throttle body or stalling issue?
NHTSA lists no related recalls tied to this Transmission & Powertrain complaint area for the 2011 Mariner, based on the data reviewed.
At what mileage do these transmission problems usually happen?
The median mileage at failure among these complaints is 46,000 miles.
How common are these complaints for the 2011 Mariner?
Transmission & Powertrain complaints make up 24 of the 87 total complaints filed for the 2011 Mariner, or 28% of all complaints that year.
Did any of these stalling incidents cause a crash or injury?
No crashes, fires, or injuries are recorded among these complaints in the NHTSA data.

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.