2010 Mercury MOUNTAINEER problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
13 owner complaints analyzed
1 distinct recall campaigns
38,660 mi median reported failure mileage
Scope: 2010 model year. Data snapshot: . 11 complaints include usable failure mileage.
Most common problems
Service Brakes is the most frequently named component, appearing in 5 of 13 complaints (38.5%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 8 | 61.5% |
| Transmission and shifting | 1 | 7.7% |
| Engine operation | 1 | 7.7% |
| Electrical and battery issues | 1 | 7.7% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 5 |
| Vehicle Speed Control | 4 |
| Engine | 3 |
| Power Train | 2 |
| Steering | 2 |
| Electrical System | 1 |
| Fuel System, Gasoline | 1 |
| Fuel/Propulsion System | 1 |
Service Brakes: 5; Vehicle Speed Control: 4; Engine: 3; Power Train: 2; Steering: 2; Electrical System: 1; Fuel System, Gasoline: 1; Fuel/Propulsion System: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 4 |
| 50,000 to 74,999 | 3 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 1 |
| 150,000 and above | 0 |
Under 25,000: 2; 25,000 to 49,999: 4; 50,000 to 74,999: 3; 75,000 to 99,999: 1; 100,000 to 149,999: 1; 150,000 and above: 0
25,000 to 49,999 miles has the most reports with usable mileage (4). 2 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2012 | 1 |
| 2013 | 3 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 2 |
| 2022 | 1 |
2012: 1; 2013: 3; 2014: 2; 2015: 2; 2016: 1; 2018: 1; 2019: 2; 2022: 1
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 8 complaint narratives. Transmission and shifting appears in 1 complaint narratives. Engine operation appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10460011 · 2012-05-30 (May 30, 2012)
PULLED INTO PARKING SPACE, PLACED SHIFTER IN PARK, TURNED OFF IGNITION, RELEASED BRAKE AND VEHICLE ROLLED BACKWARDS AS IF NOT IN PARK. ATTEMPTED TO RESTART VEHICLE AND NO RESPONSE. SET PARKING BRAKE. COULD NOT GET VEHICLE TO LOCK INTO PARK, SHIFTER MOVED REGARDLESS OF BRAKE ON OR NOT AND WOULD NOT START. MOVED SHIFTER THROUGH ENTIRE RANGE OF GEARS AND RETURNED TO PARK, VEHICLE STILL WOULD NOT START AND PARK WOULD NOT HOLD. CALLED DEALER AND WAS TOLD TO HAVE IT TOWED IN. RETURNED TO VEHICLE AND TRIED ONCE MORE AND IT STARTED AND PROCEEDED TO RES…
Owner-reported narrative. 6,125 miles reported. Look up ODI 10460011 at NHTSA ↗
Owner report 10500740 · 2013-02-28 (February 28, 2013)
TL* THE CONTACT OWNS A 2010 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE BRAKING TO A STOP, THE VEHICLE WOULD LUNGE FORWARD. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY ADVISED HIM THAT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 1,000. THE CURRENT MILEAGE WAS APPROXIMATELY 30,000.
Owner-reported narrative. 1,000 miles reported. Look up ODI 10500740 at NHTSA ↗
Owner report 10876658 · 2016-06-26 (June 26, 2016)
AT HIGH SPEEDS, THE CAR STALLS. IT ALSO STALLS AT STOP LIGHTS. THIS HAPPENS REPEATEDLY, AND FORD CANNOT FIGURE OUT WHAT IS WRONG WITH IT.
Owner-reported narrative. 65,000 miles reported. Look up ODI 10876658 at NHTSA ↗