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ProblemsByVin Index / 2007-MERCURY-MOUNTAINEER / COMPLAINTS
Full complaint record · NHTSA

2007 Mercury Mountaineer owner complaints

81 complaints filed with NHTSA on this vehicle , including 2 reporting a crash, fire, injury, or fatality. Showing the 300 most recent — grouped by category for scanning.

powertrain 7 complaints shown

23 total in this category · severe · avg repair $2,500 · see powertrain cluster analysis →
11/09/2007 7,800 mi ODI #10208534.0

Transmission jukes ahead while traveling on long distances and short. When I let off of brake pedal it lounges forward. It has gotten worse in 2months time. I brought it to the dealer which in turn told me I must wait for a recall per Ford motor co. I feel this is nonsense being this matter is getting worse!!! What, I have to wait for my vehicle to die before I can get something done about it?!!! Bullcrap! Thanks teresa *tr

11/04/2017 130,000 mi Crash ODI #11043298.0

My 2007 mercury mountaineer never had any problems until recently, thought it was the transmission because of the way it drove. Took it to the mechanic and got transmission fluid put in but the problems remained the same and was told the transmission was fine. My thermostat housing unit was leaking (this is very common with these cars and very dangerous, needs immediate attention!) and had caused very expensive wiring issues. Almost acts exactly like the transmission is going out - RPM's are way too high, the vehicle would not accelerate in the middle of city traffic, the car jumped at a stoplight and caused me to hit the car in front of me, and it doesn't shift properly. Problems occurred out of nowhere and are too dangerous to be ignored but very expensive to be fixed. Its very common an

10/28/2013 ODI #10550211.0

2007 mercury mountaineer. Consumer writes in regards to acceleration and console lighting issues and problems with back windshield wipers. *smd

10/24/2019 130,000 mi ODI #11270823.0

I had to replace the transmission and some other related parts in my vehicle and I was informed by a dealership that there was a "silent recall" on this transmission and that even though Ford motor company was aware of the issues as early as 2000 they continue to install them in vehicles. If you look online you will see quite a number of complaints on this transmission. I feel since Ford knowingly kept using these transmissions and was well aware of their possible failure when they reached 130,000 miles that they should be responsible for at least a portion of he costs if indeed, not all of the cost of replacement. What happens when a car company puts out a silent recall? Do I have any rights? I have already sent a certified letter to Ford motor customer relations in dearborn, mi and

10/22/2007 9,000 mi ODI #10206491.0

Tl*the contact owns a 2007 mercury mountaineer. The transmission made noises when downshifting at 15 MPH or when starting the vehicle. The dealer reprogrammed the vehicle. The contact took the vehicle home, but the failure worsened. The transmission continued to slip. She returned to the dealer and left the vehicle there for a few days. A new computer part was placed in the vehicle, but the failure still persists. There is no repair for the failure. The failure mileage was 9,000 and current mileage was 9,500.

10/21/2013 145,000 mi ODI #10548767.0

Apparently there have been a lot of issues with the thermostat housing leaking fluid into the electrical system causing it to short out. I was driving, went to take off in rush hour traffic and they vehicle wouldn't go because the leak and ruined a part of the electrical system and the gears would shift. It was almost like the transmission had gone out. I have read several accounts where this has happened to tons of <09 mountaineers and explorers. Tsb 09-22-15 came out about this issue. I was driving with my infant daughter and we could have been injured very badly. Something needs to be done about this. It has been identified and apparenlty affects people's cars and their ability to accelerate. Very dangerous. *tr

10/06/2009 30,000 mi Crash ODI #10286494.0

Tl*the contact owns a 2007 mercury mountaineer. Immediately after the vehicle was turned on without warning, it accelerated and crashed into a store. The police gave her a ticket for careless driving. The vehicle was towed to an authorized dealer. She was not informed of the repairs that were made to the vehicle. The contact has had problems with the vehicle since she purchased it. Prior to the failure, whenever she engaged the brake pedal the vehicle accelerated without warning; however, the dealer stated that there was nothing wrong with the vehicle. The vehicle was destroyed per the insurance company. The contact was always concerned about the safety risk and defect in the vehicle . The failure and current mileages were 30000. Updated 11/04/09.*lj the consumer stated the vehicle made

other 6 complaints shown

12/13/2013 101,000 mi ODI #10555994.0

While driving on the highway the drivers seat moved all the way back and interior lights came on. The seat proceeded to go forward and backwards numerous times. This has happened regularly from september to december. On back roads and highways. *tr

11/18/2011 ODI #10436388.0

In regards to fitting two backless booster seats in the middle row of a 60-40 fold bench: on the passenger side- the seat does not slope on the sides and the buckle has a cloth strap and it is flexible and moves out of the slot to fit to his buckle. The seat is slightly wider than the drivers side. Driver's side- the seat is more contoured and the buckle is affixed to the seat and does not move or come up because of the 60-40 split. When the booster seat is placed out of the edge of the contour on the drivers side- it completely covers the buckle. Therefore, one must sit the booster unsafely at an angle where one side is higher than the other to get the buckle to fit in. I am certain in the event I slam on my brakes or get rearended, one child's seat would go flying, whereas the other sea

11/06/2017 150,260 mi ODI #11044010.0

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.

10/10/2019 215,297 mi ODI #11267783.0

Can't register my vehicle because I'm told that the catalytic converter is not legal for use in california, and it is not available after an extensive nation wide search of different catalytic converter manufacturers. How or can you help me to resolve this matter.

10/03/2014 90,000 mi ODI #10641256.0

Tl* the contact owns a 2007 mercury mountaineer. The contact stated while driving at unknown speeds, the driver's seat moved in reverse independently and without warning. The failure recurred several times. The contact mentioned that the driver seat switch had been replaced previously but the failure persisted. The vehicle was taken to a dealer. The technician verified that the driver seat switch needed to be replaced. The vehicle was repaired. The manufacturer was notified of the issue. The approximate failure mileage was 90,000.

09/26/2018 207,000 mi ODI #11131717.0

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.

electrical 3 complaints shown

12 total in this category · moderate · avg repair $850 · see electrical cluster analysis →
12/17/2012 52,000 mi ODI #10489013.0

Tl* the contact owns a 2007 mercury mountaineer. While driving approximately 40 MPH, the front driver's side seat moved backward and forward independently. The vehicle was taken to the dealer for diagnostic testing. The technician was able to duplicate the failure and recommended replacing the ignition. The technician advised that if the failure continued, then the seating harness would have to be replaced. The contact had the technician disconnect the seat. The vehicle was not repaired. The approximate failure mileage was 52,000.

11/11/2014 65,000 mi ODI #10654146.0

Driver's seat moved back, dome lights illuminated (vehicles "easy exit" feature) while driving at highway speeds. Luckily I am tall enough to reach the pedals and wheel while the seat was moved back, but my wife is only 5' 4" and would have a hard time reaching. This is a serious issue that has been happening to many other mountaineers as evidenced by the many reports on the internet. The cause is any slight bumping of the ignition switch or the steering column/wheel. *tr

10/24/2017 102,000 mi ODI #11039428.0

Upon driving on the freeway the inside dome lights came on and my seat started adjusting itself back and forth while driving.

wheels 1 complaint shown

12/28/2012 56,114 mi ODI #10490407.0

Discount tire company informed me that they had a technical bulletin - wheel advisory that said; "do service the mercury mountaineer 18" oe wheels (2005 and newer) they found in testing that the front bead hump has a ridge on the balcony ledge which can cause bead damage when mounting. Tests were conducted where several types of tires were mounted and inflated on the oe wheels. The only tire they were able to seat at (50psi) was the original equipment michelin. After mounting and found that it had a damaged bead. During the test, they were not able to get a tire to seat without damaging the bead. The recommendation: do not service these wheels. Central florida Lincoln dealer (formerly central florida Lincoln mercury) did not have any service bulletin on this problem. The only way I

cruise control 1 complaint shown

4 total in this category · severe · avg repair $600 · see cruise control cluster analysis →
11/25/2012 97,700 mi ODI #10485935.0

When braking the vehicle accelerates, when slowing down to a stop sign or a red light and it happens when parking forward or reverse. I recently purchased the vehicle 8/2012. I am very dispointed because I really like this SUV. I hope the dealer will fix this speed control problem free of charge because this situation could get dangerous. *tr

tires 1 complaint shown

10/19/2014 ODI #10648662.0

Purchase 4 new tires march 9, 2013 from our local mr. Tire in marion ohio. They started going bad this summer. Went to manager and was told you never had then rotated as told. We did go after 6 months of purchase and told to come back next day since they were too busy that day. They were not nice and I called tire company giti tire and was told to have the store call them which mr. Tire never did, many life events have happened since then and never went back. The two back tires now have sharp metal coming thru as found by my son when I almost wrecked in the rain yesterday. The two fronts are going bald. The tires are runway enduro 816 - p235/65r18. They have 18, 660 miles on them with a 40,000 mile warranty. I do not have the money to replace 4 new tires. *tr

brakes 1 complaint shown

09/23/2008 ODI #10243206.0

When making a sudden stop, the brake pedal goes to the floor while maintaining pressure on the brake pedal. When holding vehicle on a steep incline (stopped), the pedal goes to the floor. Had it back to Ford dealers and was told this is a normal condition for explorers and mountaineers even though service managers and the mechanics have told me there was a problem when they initially checked the brakes. I have started the paperwork for the nys lemon law procedure. I have put the first complaint of this in the approx. Accident date box. This happens whenever you use the vehicle. *tr

Showing 300 of 81 total complaints. The full federal record is available at nhtsa.gov/vehicle/2007/Mercury/Mountaineer#complaints.
Source: National Highway Traffic Safety Administration (NHTSA) owner complaint database. Last synced 2026-06-28. Complaints are owner-submitted and unverified — the existence of a complaint is not proof of a defect, but a pattern of complaints around the same component is a signal worth weighing. Verify any specific filing at nhtsa.gov.
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