MERCURY MOUNTAINEER · model year

2010 MERCURY MOUNTAINEER

24 NHTSA complaints, and 1 active recall for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2010MERCURYMOUNTAINEER carries 24 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2010 MOUNTAINEER is service brakes with 5 filings, followed by vehicle speed control (4) and engine (3). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability. This model year has 1 active recall campaign, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.

NHTSA currently has 3 investigation files overlapping the 2010 MOUNTAINEER. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

24
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths

Total Complaints

24 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

Complaints by Component

ComponentCount
SERVICE BRAKES5
VEHICLE SPEED CONTROL4
ENGINE3
STEERING2
POWER TRAIN2
FUEL SYSTEM, GASOLINE1
STRUCTURE1
SEAT BELTS1
FUEL/PROPULSION SYSTEM1
UNKNOWN OR OTHER1
SEATS1
INTERIOR LIGHTING1
ELECTRICAL SYSTEM1

Recalls (1)

10V16100020/04/2010

SEATS:FRONT ASSEMBLY:RECLINER

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

Recent Complaints

20220607ELECTRICAL SYSTEM

The contact owns a 2010 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the computer had provided an incorrect error code. The vehicle was also diagnosed by an authorized Ford tech who confirmed the failure with the computer. The manufacturer was contacted and informed of the failure. The manufacturer referred the contact to the NHTSA to file a complaint. The vehicle was not repaired. The approximate failure mileage was 109,000.

Mileage: 109,000

20191231SERVICE BRAKES

TL* THE CONTACT OWNS A 2010 MERCURY MOUNTAINEER. WHILE THE CONTACT'S WIFE WAS DRIVING 70 MPH, SHE DEPRESSED THE BRAKE PEDAL AND THE FRONT DRIVER'S SEAT STARTED TO SLIDE BACKWARDS AND THE INTERIOR LIGHTING ILLUMINATED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE DRIVER LOST CONTROL OF THE VEHICLE AS IT MADE A 360 DEGREE SPIN. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

20191231SEATS

TL* THE CONTACT OWNS A 2010 MERCURY MOUNTAINEER. WHILE THE CONTACT'S WIFE WAS DRIVING 70 MPH, SHE DEPRESSED THE BRAKE PEDAL AND THE FRONT DRIVER'S SEAT STARTED TO SLIDE BACKWARDS AND THE INTERIOR LIGHTING ILLUMINATED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE DRIVER LOST CONTROL OF THE VEHICLE AS IT MADE A 360 DEGREE SPIN. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

20191231INTERIOR LIGHTING

TL* THE CONTACT OWNS A 2010 MERCURY MOUNTAINEER. WHILE THE CONTACT'S WIFE WAS DRIVING 70 MPH, SHE DEPRESSED THE BRAKE PEDAL AND THE FRONT DRIVER'S SEAT STARTED TO SLIDE BACKWARDS AND THE INTERIOR LIGHTING ILLUMINATED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE DRIVER LOST CONTROL OF THE VEHICLE AS IT MADE A 360 DEGREE SPIN. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

20191208UNKNOWN OR OTHER

DOORS LOCKING MECHANISM MALFUNCTIONING AND CODING NUMBERS NOT FUNCTIONING. BEING LOCKED OUT WHEN USING CODE #S. CHAIN CRANKIN HARSHLY BUT NOT UNLOCKING DOORS. WHEN USING KEY INSTEAD OF CODE KEY DOES NOT UNLOCK NOR LOCK ANY DOORS EXCEPT DRIVERS DOOR LOCK.

Mileage: 90,500

20181210POWER TRAIN

REAR DIFFERENTIAL IS FILLING WITH WATER PASS THE FILL PLUG. THIS IS A GARAGE KEPT CAR AND NEVER OFF ROAD NOR DIRVEN IN DEEP WATER. FIRST TIME DISCOVERED AT 22000 MILES AND THE DEALER REPLACE THE PINION SEAL AND OIL, BUT COULD NOT FIND THE CAUSE. DIFFERENTIAL NOW MAKING NOISE AND AGAIN FULL OF WATER PAST THE FILL PLUG. SEARCHED ONLINE AND FOUND SEVERAL PEOPLE WITH THE SAME PROBLEM WITH FORD PRODUCTS. DEALER CANNOT FIND OR NOT WILLING TO FIND THE CAUSE. CALLED FORD AND THEY OFFER LITTLE TO NO SUPPORT. GUESS THEY ARE WAITING FOR THE DIFFERENTIALS TO LOCK UP AT HIGHWAY SPEED AND KILL A DOZEN OF SO PEOPLE.

20160626ENGINE

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.

Mileage: 65,000

20160626FUEL/PROPULSION SYSTEM

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.

Mileage: 65,000

20150929SEAT BELTS

TL* THE CONTACT OWNS A 2010 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE ATTEMPTING TO LATCH BOTH OF THE SECOND ROW SEAT BELTS, THE BELTS FRACTURED AND DETACHED FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 60,000.

Mileage: 60,000

20150328SERVICE BRAKES

FRONT BRAKES STARTED AUTOMATICALLY SEIZING UP RANDOM TIMES AND SPEEDS DUE TO A DEFECTIVE WHEEL BEARING THAT DISRUPTED THE ANTILOCK BRAKE SENSORS. THIS CREATED AN EXTREMELY DANGEROUS DRIVING ISSUE. FORD REFUSED TO TAKE RESPONSIBILITY OR PAY FOR ANY REPAIRS BECAUSE IT WAS OUTSIDE THE WARRANTY PERIOD. *TR

Mileage: 38,000

20141005SERVICE BRAKES

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 C

Mileage: 38,000

20141005VEHICLE 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 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 C

Mileage: 38,000

20141005STEERING

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 C

Mileage: 38,000

20140325SERVICE BRAKES

FROM: TIER 1 EMAIL - [XXX] SENT: THURSDAY, MARCH 20, 2014 8:57 AM TO: [XXX]SUBJECT: RE: VEHICLE SERVICE ISSUES CRM:01660000000018 [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. 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. [XXX]FORD MOTOR COMPANY ------------------- ORIGINAL MESSAGE ------------------- FROM: GENERIC - CRC CONTACT RECEIVED: 3/18/2014 5:45 PM TO: TIER 1 EMAIL - CRCFMC WHAT IS YOUR VEHI

Mileage: 38,660

20131014SERVICE BRAKES

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

Mileage: 31,000

20131014VEHICLE 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 A 2001 FORD TAURUS AND FORD ISSUED A RECALL NOTICE TO HAVE THE PLACEMENT OF PEDALS CHANGED. *TR

Mileage: 31,000

20131014STRUCTURE

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

Mileage: 31,000

20130809ENGINE

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

Mileage: 55,000

20130809VEHICLE 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 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

Mileage: 55,000

20130809FUEL SYSTEM, GASOLINE

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

Mileage: 55,000

Compare 2010MERCURYMOUNTAINEER to Similar Vehicles

NHTSA Investigations

Frequently Asked Questions

How many complaints does the 2010 MERCURY MOUNTAINEER have?
The 2010 MERCURY MOUNTAINEER has 24 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
Are there any recalls for the 2010 MERCURY MOUNTAINEER?
Yes, the 2010 MERCURY MOUNTAINEER has 1 recall(s). The most common affected component is SEATS:FRONT ASSEMBLY:RECLINER. Recalls are issued by NHTSA and manufacturers must provide a free remedy.
What are the most common problems with the 2010 MERCURY MOUNTAINEER?
The most-complained component for the 2010 MERCURY MOUNTAINEER is SERVICE BRAKES with 5 complaints. Other frequently reported areas include VEHICLE SPEED CONTROL and ENGINE.
Is the 2010 MERCURY MOUNTAINEER safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.