YearToAvoid

2010 Mercury Mariner Transmission & Powertrain Problems

NHTSA lists 60 Transmission & Powertrain complaints for the 2010 Mercury Mariner, 22% of its 270 total complaints, with a median failure mileage of 52,000. No related recalls are listed for this component on this model year.

Transmission & Powertrain complaints
60
22% of 270 complaints
All complaints this year
270
Crashes reported
0
Fires reported
1
Injuries reported
0
Median mileage
52,000 mi
Related recalls
0

Typical transmission symptoms owners report

  • Owners report sudden loss of power or stalling at highway speeds, with the vehicle coasting to a stop and needing to be pulled over.
  • Several describe harsh jerking or hard shifts between gears, sometimes with the transmission losing power and popping forward at steady speed.
  • Multiple complaints mention a powertrain or wrench warning light appearing right before the accelerator stops responding, often traced by dealers to a bad electronic throttle body.
  • One owner reported the transmission overheating and smoking while towing, with a fire noted in that incident.
  • Some drivers noticed the speedometer instantly dropping to zero along with a sudden loss of propulsion even though the engine kept idling.

When 2010 Mercury Mariner transmission complaints were filed

First complaint Jul 7, 2011, latest Jan 1, 2022.

2010 Mercury Mariner transmission & powertrain complaints: complaints filed per month8Jul 2011Apr 2013Aug 2013Dec 2013May 2014Oct 2014Oct 2016Aug 2021
60 complaints filed with NHTSA from Jul 2011 to Jan 2022; peak Jun 2013 (8).

Transmission & Powertrain recalls for the 2010 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

How common are transmission problems in the 2010 Mercury Mariner?
NHTSA lists 60 Transmission & Powertrain complaints for the 2010 model year, which is 22% of all 270 complaints filed for that year.
Is there a recall for the 2010 Mercury Mariner transmission?
No related recalls are listed in NHTSA data for this component on the 2010 model year.
At what mileage do these transmission issues usually happen?
The median mileage at failure among reported cases is 52,000 miles.
What do owners describe when the transmission fails?
Owners describe sudden stalling or loss of power, hard jerking between gears, and warning lights tied to the throttle body and powertrain system.
Did any of these transmission complaints involve a fire or crash?
NHTSA records one fire among the 2010 Mariner's Transmission & Powertrain complaints and no crashes or injuries.

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.