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2010 Mercury Mountaineer

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 11 of 13 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Vehicle Speed Control. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

Vehicle Speed Control complaints

4 reports
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38,000 miles · Oct 5, 2014
Service BrakesSteeringVehicle Speed Control

SEE BELOW FROM: TIER 1 EMAIL - CRCFMC [MAILTO:CRCFMC@FORD.COM] SENT: THURSDAY, MARCH 20, 2014 8:57 AM TO: [XXX] CT: RE: VEHICLE SERVICE ISSUES CRM:01660000000018 HELLO[XXX] MY NAME IS [XXX], I AM FROM FORD`S CUSTOMER RELATIONSHIP CENTER (CRC). I HAVE REVIEWED YOUR EMAIL REGARDING THE CONCERNS ON YOUR 2010 MOUNTAIN…

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SEE BELOW FROM: TIER 1 EMAIL - CRCFMC [MAILTO:CRCFMC@FORD.COM] SENT: THURSDAY, MARCH 20, 2014 8:57 AM TO: [XXX] CT: RE: VEHICLE SERVICE ISSUES CRM:01660000000018 HELLO[XXX] MY NAME IS [XXX], I AM FROM FORD`S CUSTOMER RELATIONSHIP CENTER (CRC). I HAVE REVIEWED YOUR EMAIL REGARDING THE CONCERNS ON YOUR 2010 MOUNTAINEER. I APOLOGIZE FOR ANY INCONVENIENCE THIS HAS CAUSED. FORD MOTOR COMPANY CONSIDERS THE SATISFACTION OF ITS OWNERS TO BE ONE OF ITS MOST IMPORTANT OBJECTIVES. WE COMMIT VERY SUBSTANTIAL RESOURCES AND EFFORT IN A SINCERE ATTEMPT TO RESOLVE THE CONCERNS OF OUR OWNERS. HOWEVER, LIMITS MUST BE PLACED ON THOSE EFFORTS. AFTER CAREFUL CONSIDERATION WE ARE SUPPORTING THE PREVIOUS DECISION AND WILL NOT BE ABLE TO REIMBURSE YOU FOR THE COST OF REPAIRS. THANK YOU FOR CONTACTING FORD MOTOR COMPANY. WE ARE SORRY THAT WE WERE NOT ABLE TO MEET YOUR EXPECTATIONS. SINCERELY, [XXX] CUSTTOMER RELATIONSHIP CENTER FORD MOTOR COMPANY FROM: GENERIC - CRC CONTACT RECEIVED: 3/18/2014 5:45 PM TO: TIER 1 EMAIL - CRCFMC SUBJECT: VEHICLE SERVICE ISSUES WHAT IS YOUR VEHICLE SALES OR SERVICE ISSUE?:THE VEHICLES BRAKES STARTED LOCKING UP WHILE DRIVING. THE CAUSE WAS DUE TO A DEFECTIVE WHEEL BEARING THAT CAUSED THE ANTILOCK BRAKE SENSOR TO MALFUNCTION CREATING AN EXTREMELY DANGEROUS DRIVING SCENARIO WHAT ACTION HAS YOUR DEALER TAKEN TO ADDRESS THE ISSUE?:N/A WHAT ASSISTANCE ARE YOU SEEKING FROM FORD MOTOR COMPANY?:REIMBURSEMENT FOR DEFECTIVE REPAIRS ARE YOU THE OWNER OF THE VEHICLE :YES MILEAGE : 38000 WHERE IS YOUR VEHICLE NOW : INPOSSESSION HAVE YOU CONTACTED THE DEALER :NO INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ODI #10641517

31,000 miles · Oct 14, 2013
Service BrakesStructureVehicle Speed Control

THERE IS A MANUFACTURING FAULT WITH THE POSITION OF THE BRAKE AND THE GAS PEDAL. IT IS VERY EASY TO MOVE THE RIGHT FOOT FROM THE GAS TO THE BRAKE AND LEAVE ENOUGH OF THE FOOT ON THE GAS AT THE SAME TIME. IT ALLOWS THE BRAKE TO BE PRESSED BUT ALSO APPLIES GAS TO GIVE A VEHICLE A SURGE WHILE BRAKING. HAD THE SAME SITUATION WITH…

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THERE IS A MANUFACTURING FAULT WITH THE POSITION OF THE BRAKE AND THE GAS PEDAL. IT IS VERY EASY TO MOVE THE RIGHT FOOT FROM THE GAS TO THE BRAKE AND LEAVE ENOUGH OF THE FOOT ON THE GAS AT THE SAME TIME. IT ALLOWS THE BRAKE TO BE PRESSED BUT ALSO APPLIES GAS TO GIVE A VEHICLE A SURGE WHILE BRAKING. HAD THE SAME SITUATION WITH A 2001 FORD TAURUS AND FORD ISSUED A RECALL NOTICE TO HAVE THE PLACEMENT OF PEDALS CHANGED. *TR

NHTSA ODI #10547840

55,000 miles · Aug 9, 2013
EngineFuel System, GasolineVehicle Speed Control

WHILE DRIVING THE MOUNTAINEER I WAS SLOWING FOR A STOPLIGHT SHORTLY AFTER STARTING IT UP (HAD DRIVEN ABOUT 1/3 MILE). THE ENGINE SUDDENLY STARTED TO SPEED UP AND REQUIRED SIGNIFICANT EXTRA BRAKING FORCE TO COME TO A STOP. I PUT THE CAR IN NEUTRAL AND THE ENGINE RAN AT ABOUT 3,300 RPM FOR ABOUT 10 SECONDS. THIS IS THE THIRD TI…

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WHILE DRIVING THE MOUNTAINEER I WAS SLOWING FOR A STOPLIGHT SHORTLY AFTER STARTING IT UP (HAD DRIVEN ABOUT 1/3 MILE). THE ENGINE SUDDENLY STARTED TO SPEED UP AND REQUIRED SIGNIFICANT EXTRA BRAKING FORCE TO COME TO A STOP. I PUT THE CAR IN NEUTRAL AND THE ENGINE RAN AT ABOUT 3,300 RPM FOR ABOUT 10 SECONDS. THIS IS THE THIRD TIME THIS HAS HAPPENED. THE FIRST TIME THE THERMOSTAT WAS REPLACED. THE SECOND TIME THE THROTTLE BODY WAS REPLACED. THE THIRD TIME THE VEHICLE WAS CHECKED BUT NO DEFECT COULD BE FOUND. THE SECOND TIME I ALSO PUT IT IN NEUTRAL AND IT ALSO RAN AT ABOUT 3,300 RPM FOR ABOUT 10 SECONDS. *TR

NHTSA ODI #10534451

1,000 miles · Feb 28, 2013
Vehicle Speed Control

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. …

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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.

NHTSA ODI #10500740

Official recalls

1

10V161000 · Seats:front Assembly:recliner

Apr 20, 2010

FORD IS RECALLING CERTAIN MODEL YEAR 2010 FUSION, EXPLORER, EXPLORER SPORT TRAC, AND MERCURY MILAN AND MOUNTAINEER VEHICLES MANUFACTURED BETWEEN DECEMBER 15, 2009 THROUGH FEBRUARY 3, 2010 EQUIPPED WITH FRONT SEAT MANUAL RECLINERS. THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 202, "HEAD RESTRAINT." THE RECLINER GEAR PLATE TEETH MAY BE OUT OF DIMENSION SPECIFICATION WHICH COULD RESULT IN LIMITED PAWL TO GEAR PLATE TOOTH ENGAGEMENT.

Consequence & remedy

Consequence: IN THE EVENT OF A CRASH, THE SEATBACK AND HEAD RESTRAINT MAY MOVE REARWARD, INCREASING THE RISK OF INJURY.

Remedy: DEALERS WILL REPLACE THE MANUAL RECLINERS FOR BOTH POWER AND MANUAL SEATS FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN ON OR BEFORE APRIL 30, 2010. OWNERS MAY CONTACT FORD AT 1-866-436-7332.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

1

AQ10001 · Fleet Vehicle Recall Completion Audit

Opened Nov 18, 2010 · Closed Dec 28, 2015

Status: closed (inferred from source dates) · Unknown Or Other

On November 18, 2010, NHTSA's Recall Management Division (RMD) opened an audit query (AQ10-001) to investigate recall remedy completion by rental car companies on safety recall campaigns.It was expected to provide the agency an indication of how completely and how quickly rental car fleets perform necessary recall-related remedies on the vehicles owned and then rented/leased for use on the roadways.RMD queried three (3) major motor vehicle manufacturers (Ford, Chrysler, and General Motors) and requested data regarding completion figures for fifteen (15) discreet safety recalls.Analysis of this data demonstrated that rental car recalls completion was neither complete nor consistent.The rental car companies representing the largest market share in the industry were then queried as to their respective policies for the rental, lease, and sale of vehicles with open recalls.The data and responses from the manufacturers and the rental car companies can be found in the document repository by accessing the ?Associated Documents link above.In December 2015, Congress enacted the Fixing America's Surface Transportation (FAST) Act.One section of the Act prohibits rental car companies from renting, leasing, or selling motor vehicles subject to open safety recalls.With the passage of the FAST Act and its prohibition, there is no continuing need for the agency to investigate rental car recall completions.Accordingly, this investigation is closed.The agency reserves the right to open any future investigations, including audits of individual recalls, or groups of recalls, or rental car companies, to examine more closely safety recalls performance and completion issues in this area.