started losing power, did not want to go pas 30 miles per hr, then it ramed up and came to a stop with no acceleration, i shut it off then start it again and was able to get home at a low rate of speed while continuing to have these problems, another day while far away from home the engine rammed up again minimizing my speed as the transmission was slipping and not go fast then my O/D over drive went on flashing a light, while the engine kept steady at 20-30 miles per hour while accelerating increasing no speed, now my SUV will not run wright, it will kick into gear at times constantly and cause problems driving safely, this is a common problem I'm hearing and reading in the internet with the ford/ mercury mountaineer the manufactory does not want to accept responsibility with this problem..... this is clear a RECALL ISSUE that needs to be addressed before someone gets killed on the highway by getting rammed by a semi-truck which it almost happened to me !!!! a multi-million dollar law suit is in order if they do not acknowledge and fix this problem

- East Stroudsburg, PA, USA

On two occasions the engine cut out while driving the car, all the engine warning lights came on. Once the car was safely off the road and placed in park it would start and continue to operate. The Ford dealer said that there was not fault code in the computer, they could not duplicate the failure and could not find any fault in the engine system. Ford service representatives said I should go a different Ford dealer and see if they could solve the problem. I find similar engine failures documented on the internet for this generation of car. More current similar model are not reported to have this problem. Thus I assume Ford found and fixed this problem. I asked them to tell me how they solved the problem, they said that was not possible. So, I have an otherwise good car which I can do use nor in good conscience sell to someone else. Please help!

- Spicewood, TX, USA

While driving 50 mph vehicle stalled three times. Took it to a garage, was told it was necessary to have the vehicle when it stalled. Found eleven (11) similar complaints on your site! perhaps there is some validity to the complaints. All parts of the vehicle related to safe driving were rendered useless. Sounds like a safety issue to me!

- Indiana, PA, USA

My transmission went only after 1 year of having car, spend ofver $3,000 for a new transmission and now the transmission is going again. This is unacceptable. I don't even drive that much.

- Greenfield Park, NY, USA

The contact owns a 2005 Mercury Mountaineer. While driving at approximately 50 mph, the engine stalled without warning. The contact was able to restart the vehicle. The failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 126,000. The VIN was not available....updated 07/30/15

- Indiana, PA, USA

As I was driving the vehicle just died; all the warning lights came on and as I was losing speed I pulled over to curb the best I could. Restarted car and it seemed to run fine but happened again 20 minutes later. This has also happened 2 other times within the last 10,000 miles of driving.

- Ofallon , MO, USA

The engine has shut off twice while driving using cruise control. The first time I was able to get to the side of road and restart it.. the second time I put it in neutral and restarted it while moving. I am afraid to use the cruise control now - if there had been oncoming traffic we would've had a head-on collision as I was on a corner and went into the other lane. When the engine shuts off, the power steering is gone leaving it very difficult to turn.

- Federal Way, WA, USA