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2007 Mercury Mountaineer

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2007 Mercury Mountaineer do not stand out strongly from the model-year median of 117.

About this comparison →

When problems were reported

Mileage at the reported incident

67 reports with mileage · 14 unknown

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.

  • Seats. Review the 26 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 25 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports0 fire reports1 injury reports

What owners actually said

81 reports
140,859 miles · Jun 13, 2019
Electrical System

I WAS DRIVING HOME ON A BUSY CITY STREET WHEN I STOP AT A STOP LIGHT TO TURN RIGHT. WHEN I WENT TO ACCELERATE MY MERCURY MOUNTAINEER WHEN IN TO LIMP MODE. AS I INSPECTED THE SUV FOR PROBLEMS I NOTICED THE MY ENGINE/TRANSMISSION WIRE HARNESS WAS BRITTLE AND EXPOSING BARE WIRE AND THAT THE WIRES WERE TOUCHING EACH OTHERS CAUSE THE…

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I WAS DRIVING HOME ON A BUSY CITY STREET WHEN I STOP AT A STOP LIGHT TO TURN RIGHT. WHEN I WENT TO ACCELERATE MY MERCURY MOUNTAINEER WHEN IN TO LIMP MODE. AS I INSPECTED THE SUV FOR PROBLEMS I NOTICED THE MY ENGINE/TRANSMISSION WIRE HARNESS WAS BRITTLE AND EXPOSING BARE WIRE AND THAT THE WIRES WERE TOUCHING EACH OTHERS CAUSE THEM TO SHORT OFF THE VEHICLE COMPUTER SYSTEM AND FRYING ELECTRICAL COMPONENTS. IT ALSO CAUSED THE TRANSMISSION TO MALFUNCTION AND SHIFT WRONG WHICH IN TURN CAUSING THE TORQUE CONVERTER TO FAIL AND DESTROY THE TRANSMISSION.

NHTSA ODI #11219659

110,000 miles · Jan 10, 2019
Air Bags

I AM RECEIVING FALSE READINGS AS TO THE ACTIVATION OF THE AIR BAGS. THIS HAPPENS WHEN I AM STARTING THE VEHICLE AND ALSO WHEN I AM OPERATING THE VEHICLE ON THE HIGHWAY. I CAN TURN THE VEHICLE OFF AND RESTART IT, AND SOMETIMES THE INDICATOR WORKS PROPERLY AND SOMETIMES IT DOES NOT. I EXPERIENCE THE SAME PROBLEM SOMETIMES WHEN THE…

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I AM RECEIVING FALSE READINGS AS TO THE ACTIVATION OF THE AIR BAGS. THIS HAPPENS WHEN I AM STARTING THE VEHICLE AND ALSO WHEN I AM OPERATING THE VEHICLE ON THE HIGHWAY. I CAN TURN THE VEHICLE OFF AND RESTART IT, AND SOMETIMES THE INDICATOR WORKS PROPERLY AND SOMETIMES IT DOES NOT. I EXPERIENCE THE SAME PROBLEM SOMETIMES WHEN THE PASSENGER SEAT IS OCCUPIED. MY CONCERN IS THE FACT I DON'T KNOW IF MY AIRBAG IS OPERATIONAL OR NOT. I CONTACTED MY LOCAL DEALER AND WAS INFORMED I WOULD BE CHARGED $99 TO JUST HAVE IT CHECKED. I HAVE NOT DONE SO.

NHTSA ODI #11166315

207,000 miles · Sep 26, 2018
Interior LightingSeats

TL* THE CONTACT OWNS A 2007 MERCURY MOUNTAINEER. WHILE DRIVING VARIOUS SPEEDS, THE INTERIOR LIGHTING ILLUMINATED AND THE DRIVER'S SEAT UNINTENTIONALLY MOVED BACKWARDS. THE CONTACT STATED THAT THE FAILURES OCCURRED PERIODICALLY. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS MADE AWA…

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TL* THE CONTACT OWNS A 2007 MERCURY MOUNTAINEER. WHILE DRIVING VARIOUS SPEEDS, THE INTERIOR LIGHTING ILLUMINATED AND THE DRIVER'S SEAT UNINTENTIONALLY MOVED BACKWARDS. THE CONTACT STATED THAT THE FAILURES OCCURRED PERIODICALLY. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS 207,000.

NHTSA ODI #11131717

80,000 miles · Aug 28, 2018
Engine

CAR RAN ROUGH & HESITATED/SURGED UPON ACCELERATION. APPARENTLY THIS IS A COMMON FORD PROBLEM INVOLVING PREMATURE SPARK PLUG BREAK DOWN IN THE FORD TRITON ENGINE SEE FORD SPARK PLUG CLASS ACTION SETTLEMENT. SHULTZ FORD IN NANUET NY DIAGNOSED THE PROBLEM AS FAULTY PLUGS, THERE WAS ALSO A RISK OF BREAKING PLUGS UPON REMOVAL. I HAD…

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CAR RAN ROUGH & HESITATED/SURGED UPON ACCELERATION. APPARENTLY THIS IS A COMMON FORD PROBLEM INVOLVING PREMATURE SPARK PLUG BREAK DOWN IN THE FORD TRITON ENGINE SEE FORD SPARK PLUG CLASS ACTION SETTLEMENT. SHULTZ FORD IN NANUET NY DIAGNOSED THE PROBLEM AS FAULTY PLUGS, THERE WAS ALSO A RISK OF BREAKING PLUGS UPON REMOVAL. I HAD THEM DO THE REPAIRS AT A COST OF $788. LATER I FOUND THAT THERE WAS A SETTLEMENT, HOWEVER MY CAR WAS NOT INCLUDED EVEN THOUGH IT HAD THE SAME ENGINE AS THE CARS/TRUCKS/ SUV'S THAT WERE INCLUDED IN THE SETTLEMENT. FORD CUSTOMER SERVICE SAID THERE WAS NOTHING THEY COULD DO RE: REIMBURSING ME FOR THE REPAIR EXPENSE AS MY SUV WAS NOT INCLUDED IN THE SETTLEMENT. THEY SUGGESTED I FILE THIS COMPLAINT. CAN I GET SOME SATISFACTION?

NHTSA ODI #11123073

60,000 miles · May 30, 2018
Power Train

TL* THE CONTACT OWNS A 2007 MERCURY MOUNTAINEER. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE WOULD JUMP AND JERK. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND IT WAS DIAGNOSED THAT THE TRANSMISSION FAILED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS …

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TL* THE CONTACT OWNS A 2007 MERCURY MOUNTAINEER. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE WOULD JUMP AND JERK. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC AND IT WAS DIAGNOSED THAT THE TRANSMISSION FAILED. THE DEALER AND MANUFACTURER WERE NOT MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000. *TT UPDATED 9/21/18*JB

NHTSA ODI #11098823

171,237 miles · Apr 30, 2018
Electrical SystemSeat BeltsUnknown Or Other

PASSENGER SEATBELT LOCKS WILL NOT UNLOCK UNLESS YOU UNBUCKEL THE BELT IT JUST KEEPS GETTING TIGHTER HAVE A PROBLEM WHERE THE YOU PUSH DOWN ON GAS IT WON'T DO ANYTHING FOR A MOMENT THEN JOLT FORWARD AN THE MAIN PROBLEM IT WITH THE ELECTRIC IF YOU BARLEY TOUCH THE IGNITION SWITCH OR CONTROLS FOR THE SEAT THE SEAT MOVES THE IGNI…

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PASSENGER SEATBELT LOCKS WILL NOT UNLOCK UNLESS YOU UNBUCKEL THE BELT IT JUST KEEPS GETTING TIGHTER HAVE A PROBLEM WHERE THE YOU PUSH DOWN ON GAS IT WON'T DO ANYTHING FOR A MOMENT THEN JOLT FORWARD AN THE MAIN PROBLEM IT WITH THE ELECTRIC IF YOU BARLEY TOUCH THE IGNITION SWITCH OR CONTROLS FOR THE SEAT THE SEAT MOVES THE IGNITION ALSO NOT ONLY MOVES THE SEAT BUT A COUPLE TIMES IT HAS SHUT THE CAR OFF AND ONCE LOCKED US IN THE CAR HAD TO PUT THE KEYS IN AND START TO GET IT TO UNLOCK AND ONCE LOCKED US OUT WITH KEYS STILL IN IGNITION SWITCH

NHTSA ODI #11090988

150,000 miles · Apr 8, 2018
Electrical SystemPower TrainSteering

WHILE DRIVING MY SEAT WILL RANDOMLY MOVE BACK AND FORTH AS IF I TOOK THE KEYS OUT. THOUGHT SOMETHING WAS WRONG WITH MY TRANSMISSION BUT AFTER HAVING THE GARAGE PUT TRANSMISSION FLUID IN IT STILL FEELS LIKE THE TRANSMISSION IS MESSED UP EVEN THOUGH THE GARAGE SAYS THE TRANSMISSION IS FINE.

NHTSA ODI #11083828

77,800 miles · Mar 16, 2018
Seats

INTERMITTENTLY, THE SEAT MOVES TO THE 'EASY EGRESS' POSITION WHILE THE CAR IS IN MOTION. THE DOME LIGHT COMES ON, AS IT WOULD IF YOU WERE GETTING OUT OF THE CAR. FROM READING THE MANY SIMILAR COMPLAINTS, I AGREE THAT IT HAPPENS WHEN BRAKING OR TURNING AND IT HAPPENS AT ALL SPEEDS. THIS STARTED HAPPENING ABOUT ONE MONTH AGO. NO…

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INTERMITTENTLY, THE SEAT MOVES TO THE 'EASY EGRESS' POSITION WHILE THE CAR IS IN MOTION. THE DOME LIGHT COMES ON, AS IT WOULD IF YOU WERE GETTING OUT OF THE CAR. FROM READING THE MANY SIMILAR COMPLAINTS, I AGREE THAT IT HAPPENS WHEN BRAKING OR TURNING AND IT HAPPENS AT ALL SPEEDS. THIS STARTED HAPPENING ABOUT ONE MONTH AGO. NO ACCIDENT YET BUT IT'S VERY JARRING AND DANGEROUS.

NHTSA ODI #11079840

121,000 miles · Jan 28, 2018
Power Train

TRANSMISSION WOULD NOT SHIFT OUT OF LOW GEAR

NHTSA ODI #11065517

150,260 miles · Nov 6, 2017
Seats

WHILE DRIVING MY CHILDREN TO SCHOOL THIS MORNING MY SEAT ADJUSTED ITSELF A COUPLE OF TIMES SO THAT I HAD A DIFFICULT TIME REACHING THE PEDALS UNTIL I COULD GET IT BACK TO THE PROPER POSITION. THIS HAS HAPPENED BEFORE BUT I THOUGHT IT WAS A "FLUKE". TODAY, WHEN I PICKED MY KIDS UP AND DROVE HOME IT HAPPENED 7 TIMES IN 3 MILES AND…

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WHILE DRIVING MY CHILDREN TO SCHOOL THIS MORNING MY SEAT ADJUSTED ITSELF A COUPLE OF TIMES SO THAT I HAD A DIFFICULT TIME REACHING THE PEDALS UNTIL I COULD GET IT BACK TO THE PROPER POSITION. THIS HAS HAPPENED BEFORE BUT I THOUGHT IT WAS A "FLUKE". TODAY, WHEN I PICKED MY KIDS UP AND DROVE HOME IT HAPPENED 7 TIMES IN 3 MILES AND ALMOST CAUSED ME TO HIT A PEDESTRIAN. THIS HAPPENED ON A CITY STREET. I WAS UNABLE TO ISOLATE A "TRIGGER" TO THE MOVEMENT. ONE TIME I WAS GOING ABOUT 30 ON A STREET, ANOTHER TIME I WAS SLOWING DOWN TO A STOP SIGN AT A BUSY INTERSECTION.

NHTSA ODI #11044010

Official recalls

0

No recalls in this snapshot.

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

PE08060 · Tire Valve Cracking

Opened Oct 14, 2008 · Closed Apr 9, 2009

Status: closed (inferred from source dates) · Tires:valve

ON OCTOBER 14, 2008, ODI OPENED PE08-060 TO INVESTIGATE ALLEGATIONS OF CRACKED AND LEAKING SNAP-IN TIRE VALVES IN MODEL YEAR (MY) 2007 VEHICLES MANUFACTURED BY FORD MOTOR COMPANY.THE VALVES WERE SUPPLIED TO FORD BY TOPSEAL AUTO-PARTS, A SUBSIDIARY OF THE SHANGHAI BAOLONG AUTOMOTIVE CORPORATION IN CHINA.VALVES MADE BY TOPSEAL FOR AFTERMARKET SALE WERE THE SUBJECT OF TWO RECENT SAFETY RECALLS BY TECH INTERNATIONAL (08T-018) AND DILL AIR CONTROLS (08T-028), THE LATTER OF WHICH WAS INVESTIGATED BY ODI IN PE08-036 AND EA08-022.THE DEFECT CONDITIONS ADDRESSED BY THE AFTERMARKET TIRE VALVE RECALLS BOTH INVOLVED INADEQUATE RESISTANCE TO OZONE CRACKING DUE TO ISSUES WITH THE SUPPLY OF ANTI-OZONANT CHEMICALS TO TOPSEAL FOR A PERIOD FROM JULY TO MID-NOVEMBER 2006.THE AFTERMARKET VALVES WERE COMPOUNDED WITH A BLEND OF EPDM AND NATURAL RUBBER, USING A RELATIVELY LOW PERCENTAGE OF EPDM (EPDM PROVIDES INHERENT RESISTANCE TO OZONE CRACKING).HENCE, THE NEED FOR ANTI-OZONANT CHEMICALS AND THE PROBLEMS WITH CRACKING WHEN THOSE CHEMICALS WERE MISSING OR OUT OF SPECIFICATION IN SOME LOTS OF VALVES.BOTH RECALL CAMPAIGNS INVOLVED INSPECTION PROGRAMS TO IDENTIFY AND REPLACE VALVES WITH VISIBLE SURFACE CRACKING.ALTHOUGH THE TOPSEAL VALVES SUPPLIED TO FORD ALSO APPEAR TO HAVE BEEN AFFECTED BY THE ANTI-OZONANT SUPPLY ISSUES IN MID TO LATE-2006, FORD INDICATED THAT ITS VALVES WERE MADE AT A DIFFERENT TOPSEAL PRODUCTION LINE AND WERE COMPOUNDED WITH A HIGHER PERCENTAGE OF EPDM RUBBER TO MEET MORE STRINGENT SPECIFICATIONS FROM FORD.ODI'S ANALYSIS OF COMPLAINT AND WARRANTY DATA PROVIDED BY FORD SHOWED THAT PROBLEMS WITH CRACKED TIRE VALVES WERE SIGNIFICANTLY HIGHER FOR MY 2007 VEHICLES PRODUCED FROM DECEMBER 2006 THROUGH MARCH 2007.FORD RESPONDED BY IMPLEMENTING CHANGES IN ITS MATERIAL SPECIFICATIONS FOR SNAP-IN RUBBER TIRE VALVES AND ALSO INCREASING THE QUALITY AND ACCEPTANCE STANDARDS FOR VALVES IMPORTED FOR USE IN ITS VEHICLES.WHILE THE COMPLAINT AND WARRANTY CLAIM RATES ARE ELEVATED FOR SUBJECT VEHICLES PRODUCED FROM DECEMBER 2006 THROUGH MARCH 2007, THE RATES OF LEAKING VALVES ARE WELL BELOW ONE PERCENT OF PRODUCTION FOR EACH OF THE PEAK MONTHS FOR ALL OF THE AFFECTED MODELS.A SUBSTANTIAL MAJORITY OF THE SUBJECT VEHICLES ARE EQUIPPED WITH TIRE PRESSURE MONITORING SYSTEMS (TPMS) WHICH WARN THE DRIVER WHEN ANY TIRE PRESSURES DROPS BELOW 25 PERCENT OF RECOMMENDED INFLATION PRESSURE. AS OUTLINED IN A LETTER TO ODI DATED APRIL 6, 2009, FORD HAS AGREED TO SEND LETTERS TO OWNERS OF CERTAIN MY 2007 AND 2008 FORD, LINCOLN AND MERCURY VEHICLES TO PROVIDE INFORMATION ABOUT THE CRACKING CONCERN. LETTERS WILL BE SENT TO OWNERS OF VEHICLES BUILT FROM NOVEMBER 2006 THROUGH MAY 2007.OWNERS CAN OPT FOR A FREE DEALER INSPECTION.VALVES EXHIBITING SURFACE CRACKS OR AIR LEAKAGE RELATED TO OZONE ATTACK WILL BE REPLACED BY FORD UNDER ITS NORMAL WARRANTY TERMS.FORD EXPECTS TO SEND THE LETTER BY APPROXIMATELY MID-MAY 2009. BASED ON THE USE OF TPMS IN THE MAJORITY OF SUBJECT VEHICLES AND THE RELATIVELY LOW RATES OF REPAIRS ASSOCIATED WITH LEAKING VALVES AND RESULTANT TIRE DAMAGE, ODI BELIEVES THAT THE ACTIONS FORD HAS AGREED TO TAKE WILL PROVIDE EFFECTIVE AND EXPEDITIOUS RESOLUTION FOR VEHICLES THAT WERE BUILT DURING THE PERIOD WHEN VALVES WITH INADEQUATE RESISTANCE TO OZONE CRACKING WERE MOST LIKELY TO HAVE BEEN USED IN VEHICLE PRODUCTION.FURTHER INVESTIGATION OF THIS MATTER WOULD NOT BE AN EFFICIENT ALLOCATION OF AGENCY RESOURCES.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL CONTINUE TO