NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
117 reports8,000 miles · Dec 26, 2011
Power TrainVehicle Speed ControlWheels
MY 2006 MERCURY MOUNTAINEER HAS INTERMITTENTLY JOLTED OR LURCHED FORWARD WHEN STOPPING FOR LIGHTS AND STOP SIGNS AFTER SPEEDS OVER 30 MPH. HASN'T GOTTEN AWAY FROM ME BUT FEELS AS IF I AM GOING TO HIT SOMETHING OR SOMEONE AHEAD OF ME. EXTREMELY SCARY WHEN PEOPLE ARE IN CROSS WALK. I TOOK MY CAR TO THE FORD DEALER SHORTLY AFTER…
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MY 2006 MERCURY MOUNTAINEER HAS INTERMITTENTLY JOLTED OR LURCHED FORWARD WHEN STOPPING FOR LIGHTS AND STOP SIGNS AFTER SPEEDS OVER 30 MPH. HASN'T GOTTEN AWAY FROM ME BUT FEELS AS IF I AM GOING TO HIT SOMETHING OR SOMEONE AHEAD OF ME. EXTREMELY SCARY WHEN PEOPLE ARE IN CROSS WALK. I TOOK MY CAR TO THE FORD DEALER SHORTLY AFTER BUYING IT USED. THE DEALER CHECKED IT OUT AND DENIED IT WAS HAPPENING. THAT WAS YEARS AGO AND TONIGHT I SAW NUMEROUS COMPLAINTS ON ANOTHER WEBSITE ABOUT THIS PROBLEM. WAS LOOKING BECAUSE NOW I AM GETTING A GRINDING NOISE FROM MY WHEELS WHICH PERSISTS AFTER A BRAKE JOB THAT DIDN'T FIX IT AS I THOUGHT. BOTH PROBLEMS ARE SEPARATE BUT I SEE A PATTERN OF THEM ON THIS VEHICLE NOW. *TR
NHTSA ODI #10441264
62,000 miles · Nov 18, 2011
Engine And Engine Cooling
THE RADIATOR COOLANT SYSTEM IS JUNK. BUSTED SEALS AND HOSES ALL THE TIME. I AM BEGINNING TO THINK THIS CAR IS A LEMON. I REPLACED MY RADIATOR LESS THAN 1 YEAR AGO, HAD THE PART REPLACED WITH THE FACTORY PART FORD SUPPLIES AND ONCE AGAIN I HAVE A BUSTED SEAL AND HAVE TO REPLACE THE RADIATOR AGAIN. WHEN ARE THEY GOING TO RECALL TH…
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THE RADIATOR COOLANT SYSTEM IS JUNK. BUSTED SEALS AND HOSES ALL THE TIME. I AM BEGINNING TO THINK THIS CAR IS A LEMON. I REPLACED MY RADIATOR LESS THAN 1 YEAR AGO, HAD THE PART REPLACED WITH THE FACTORY PART FORD SUPPLIES AND ONCE AGAIN I HAVE A BUSTED SEAL AND HAVE TO REPLACE THE RADIATOR AGAIN. WHEN ARE THEY GOING TO RECALL THIS PART? SERIOUSLY I'VE DONE MY RESEARCH AND THE RADIATORS ON THESE VEHICLES BUSTING ISN'T AN ISOLATED INCIDENT. IS FORD GOING TO PAY $400.00 DOLLARS EVERY 6 OR SO MONTHS TO REPLACE MY RADIATOR. I WISH SOMEONE WOULD FILE A CLASS ACTION LAW SUIT OR SOMETHING. *TR
NHTSA ODI #10436297
58,753 miles · Oct 8, 2011
Engine And Engine Cooling
I HAVE LEAK IN MY RADIATOR, AND AFTER DOING SOME RESEARCH ON THE INTERNET I FOUND OUT THAT THERE IS ALOT OF COMPLAINTS ABOUT THAT TYPE OF RADIATOR IN THAT VEHICLE, AND EVERY ONE OF THE CASES IS IDENTICAL AND NOW I AM THE NEXT VICTIM OF THIS RADIATOR FAILURE. SOME THING NEEDS TO BE DONE ABOUT THE RADIATOR PROBLEMS MERCURY IS HAVI…
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I HAVE LEAK IN MY RADIATOR, AND AFTER DOING SOME RESEARCH ON THE INTERNET I FOUND OUT THAT THERE IS ALOT OF COMPLAINTS ABOUT THAT TYPE OF RADIATOR IN THAT VEHICLE, AND EVERY ONE OF THE CASES IS IDENTICAL AND NOW I AM THE NEXT VICTIM OF THIS RADIATOR FAILURE. SOME THING NEEDS TO BE DONE ABOUT THE RADIATOR PROBLEMS MERCURY IS HAVING ON THE 2006 MOUNTAINEERS. MY VEHICLE IS VERY WELL MAINTAINED AND DON'T EVEN HAVE 60,000 MILES ON IT YET.I COMPLETELY UNDERSTAND THERE WILL ALWAYS BE SOME KIND OF MECHANICAL ISSUES TO DEAL WITH NOTHING LAST FOREVER, BUT MOST RADIATORS USUALLY OUTLAST THE VEHICLE. *TR
NHTSA ODI #10429200
60,500 miles · Oct 8, 2011
Power Train
I PURCHASED THE 2006 MERCURY MOUNTAINEER IN JULY 2011. WHEN I WENT TO TAKE THE KIDS ON VACATION THE CAR HESITATED AND STOPPED ON THE HIGHWAY THEN FELT LIKE WE WERE REAR ENDED, VERY DANGEROUS WITH THE HESITATION ON ACCELERATION ALMOST CRASHED. CALLED THE PLACE I PURCHASED THEY HAVE NOW REPLACED THE TORQUE CONVERTER AND RESET THE …
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I PURCHASED THE 2006 MERCURY MOUNTAINEER IN JULY 2011. WHEN I WENT TO TAKE THE KIDS ON VACATION THE CAR HESITATED AND STOPPED ON THE HIGHWAY THEN FELT LIKE WE WERE REAR ENDED, VERY DANGEROUS WITH THE HESITATION ON ACCELERATION ALMOST CRASHED. CALLED THE PLACE I PURCHASED THEY HAVE NOW REPLACED THE TORQUE CONVERTER AND RESET THE TCM THE VEHICLE IS EVEN WORSE AND THEY ALSO HAVE HAD IT FOR 34 DAYS ON AND OFF. CALLED FORD THEY SAID THEY HAVE NO PROGRAM TO FIX AND WILL NOT REPLACE THE TRANSMISSION WHICH NEEDS TO BE REPLACED. THE DEALER REPORTS WITHOUT A BAD CODE EVEN THOUGH THEY KNOW THE VEHICLE IS HAZARDOUS THEY CANNOT FIND THE PROBLEM TO FIX, I SAID PLEASE JUST REPLACE THE TRANSMISSION AND UNFORTUNATELY TO NO AVAIL I HAVE PURCHASED A $18,000 HAZARD THAT I ONLY WAS ABLE TO DRIVE FOR 30 DAYS, TRADED MY OTHER VEHICLE AND GAVE THEM $1600 CASH FOR DOWNPAYMENT I JUST WANT MY VEHICLE FIXED.... *TR
NHTSA ODI #10429154
53,000 miles · Oct 4, 2011
Engine And Engine CoolingPower Train
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE RADIATOR STARTED TO OVERHEAT. THE DRIVER WAS ABLE TO CONTINUE DRIVING AND ADDED WATER TO THE RADIATOR. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT T…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 50 MPH, THE RADIATOR STARTED TO OVERHEAT. THE DRIVER WAS ABLE TO CONTINUE DRIVING AND ADDED WATER TO THE RADIATOR. THE VEHICLE WAS NOT INSPECTED BY A DEALER NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT THE FAILURE WAS CAUSED BY NORMAL WEAR AND TEAR. IN ADDITION, HE NOTICED THAT WHEN SHIFTING FROM PARK TO REVERSE, THE VEHICLE WOULD HESITATE AND JERK VIOLENTLY INTO THE CORRECT GEAR. THE FAILURE MILEAGE WAS APPROXIMATELY 53,000. THE VIN WAS UNAVAILABLE.
NHTSA ODI #10428441
52,000 miles · Jul 12, 2011
Power Train
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WOULD LUNGE BACKWARDS WHEN DRIVING IN REVERSE. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAG…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WOULD LUNGE BACKWARDS WHEN DRIVING IN REVERSE. THE VEHICLE WAS TAKEN TO THE DEALER BUT THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 52,000 AND THE CURRENT MILEAGE WAS 55,000.
NHTSA ODI #10411970
80,000 miles · Jun 16, 2011
Suspension
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER FOR ROUTINE MAINTENANCE WHEN THE TECHNICIAN ADVISED THAT THE REAR DRIVER SIDE WHEEL BEARING, HUB, A-RING AND HUB ASSEMBLY NEEDED TO BE REPLACED. THE IN ADDITION, THE REAR DRIVER SIDE WHEEL WAS DETACHING FROM THE VEHICLE. …
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE DEALER FOR ROUTINE MAINTENANCE WHEN THE TECHNICIAN ADVISED THAT THE REAR DRIVER SIDE WHEEL BEARING, HUB, A-RING AND HUB ASSEMBLY NEEDED TO BE REPLACED. THE IN ADDITION, THE REAR DRIVER SIDE WHEEL WAS DETACHING FROM THE VEHICLE. THE MANUFACTURER WAS CONTACTED AND ADVISED THAT THE FAILURE WAS DEEMED AS NORMAL WEAR AND ROUTINE MAINTENANCE WOULD NEED TO BE PERFORMED ON THE WHEELS. THE CONTACT STATED THAT THE REPAIR WAS NOT LISTED IN THE OWNER'S MANUAL AS ROUTINE MAINTENANCE. THE VEHICLE WAS REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 80.000.
NHTSA ODI #10407118
57,300 miles · May 12, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT HE NOTICED A PUDDLE OF UNKNOWN FLUIDS LEAKING FROM THE VEHICLE. HE THEN TOOK THE VEHICLE TO A INDEPENDENT MECHANIC AND THEY ADVISED HIM THAT THE RADIATOR WAS FRACTURED AND CAUSING THE LEAK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND TH…
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT HE NOTICED A PUDDLE OF UNKNOWN FLUIDS LEAKING FROM THE VEHICLE. HE THEN TOOK THE VEHICLE TO A INDEPENDENT MECHANIC AND THEY ADVISED HIM THAT THE RADIATOR WAS FRACTURED AND CAUSING THE LEAK. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY ADVISED HIM THAT THERE WERE NO RECALLS FOR THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 57,300. UPDATED 06/16/11*LJ UPDATED 06/21/11*JB
NHTSA ODI #10400617
98,000 miles · May 9, 2011
Engine And Engine Cooling
RADIATOR HAS FAILED A SECOND TIME IN 3 YEARS ON 2006 MERCURY MOUNTAINEER. *TR
NHTSA ODI #10399499
30,000 miles · Apr 29, 2011
Engine And Engine Cooling
TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS LEAKING COOLANT. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE RADIATOR WOULD NEED TO BE REPLACED. THE CONTACT MENTIONED THAT HE HAD THE RADIATOR REPLACED A TOTAL OF THREE TIMES AS A RESULT OF THE SAME FAILURE. THE MANUFACTURER …
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TL* THE CONTACT OWNS A 2006 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE VEHICLE WAS LEAKING COOLANT. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE RADIATOR WOULD NEED TO BE REPLACED. THE CONTACT MENTIONED THAT HE HAD THE RADIATOR REPLACED A TOTAL OF THREE TIMES AS A RESULT OF THE SAME FAILURE. THE MANUFACTURER WAS NOT CONTACTED IN REGARDS TO THE FAILURE AND THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 30,000 AND THE CURRENT MILEAGE WAS 63,000.
NHTSA ODI #10398281