Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


hardly worth mentioning
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
73,586 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 Mercury Mountaineer engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2006 Mercury Mountaineer:

Unsubscribe any time. We don't sell/share your email.

2006 Mercury Mountaineer Owner Comments

problem #11

Nov 102015


  • 120,000 miles


My 2006 Mercury Mountaineer was leaking coolant due to a crack in the radiator. After searching online forums, I have learned that has been a long standing issue with many of this vehicles owners. Unfortunately for owners, Ford issued a tbs in 2009 just in time for most of the affected vehicles' warranties to expire. Some owners are on their 3rd or more radiator replacement, I am only on my first. I petition that Ford recalls this issue before myself and others have to repeatedly pay for this clear design problem with their hard owned money. This problem also poses safety risk to the passengers operating these vehicles and to any animals attracted to the sweet smell of the coolant from affected vehicles whose owners who may not yet know this issue or cannot afford to fix it.

- Westville, NJ, USA

problem #10

Nov 012014


  • 105,000 miles
The contact owns a 2006 Mercury Mountaineer. While driving at approximately 55 mph, the vehicle intermittently stalled without warning. The vehicle was taken to an independent mechanic, who diagnosed that eight spark plugs needed to be replaced. The vehicle was repaired, but the failure recurred multiple times and a coil pack was placed to prevent the spark plugs from blowing out. The manufacturer was not notified of the failure. The approximate failure mileage was 105,000.

- Deridder, LA, USA

problem #9

May 042010


  • 35,000 miles
The contact owns a 2006 Mercury Mountaineer. The contact stated that while parked, a small amount of radiator fluid leaked from the vehicle. The vehicle was taken to an independent mechanic where the radiator was replaced four different times. In addition, the dealer informed the contact that the fan motor would need to be reprogrammed. The vehicle was not repaired. The manufacturer was notified of the problem. The approximate failure mileage was 35,000.

- Jenkinpown, PA, USA

problem #8

Sep 112013

Mountaineer 6-cyl

  • Automatic transmission
  • 100,000 miles


The contact owns a 2006 Mercury Mountaineer. The contact stated that while approaching the vehicle, he noticed that there was antifreeze leaking onto the ground. The vehicle was not taken to the dealer for inspection. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 100,000. The VIN was unavailable. Updated 02/11/2014 the consumer stated the radiator was leaking in the seams. The radiator was eventually replaced at a cost of $400. Updated 02-2-/14

- Ledbetter, KY, USA

problem #7

Dec 312013

Mountaineer 6-cyl

  • 115,000 miles
I have gone through 3 radiators so far and now I need a 4th. This time, the radiator caused the pumps to start leaking ( which are not serviceable) and eventually ruined my transmission, rendering the truck non-drivable. This problem has cost me thousands of dollar and I want a recall to start on this part with Ford.

- Stevensville, MD, USA

problem #6

Oct 102012


  • 75,000 miles
The contact owns a 2006 Mercury Mountaineer. The contact stated while driving at an unknown speed the temperature light illuminated. The vehicle was towed to a dealer for diagnosis. The contact was informed that the engine and radiator would need to be replaced. The vehicle was repaired. One year later, the failure recurred and the radiator was replaced. The VIN was unavailable. The failure mileage was 75,000. The current mileage was unknown.

- The Woodlands, TX, USA

problem #5

Feb 012013


  • miles


I am on my 3rd radiator, there should be a recall on the radiators.

- Stevensville, MD, USA

problem #4

Jun 112009


  • 58,945 miles
Purchased in June 2009 and have had problem after problem. Mountaineer premier AWD. Transmission issue, feels like you're getting hit from behind when coming to a stop. Radiator leaks. Back lift gate randomly opens, won't latch. When it rains, water comes in through the interior light mount and through dvd player. Spark plugs not easily replaced, broke off and had to be towed to a shop for removal. Gas unable to be pumped properly I can put in.25 at a time if I'm lucky. It takes 20 minutes to pump half a tank of gas. I love the features this vehicle has but this has been such a hassle.

- Pocomoke, MD, USA

problem #3

May 252012


  • 54,000 miles
Truck cooling system died which caused the truck to catch fire while driving down the highway, smoke poring out, state troopers had to assist us. My daughter was scared to death and now refuses to get back in the truck even though we got a new engine. To make matters worse we spent 3000 on and engine...500 on cooling system and had the transmission reprogrammed. The truck is still have major problems and now for says it needs the transmission rebuilt or replaced. All of this is out of pocket. We cant even trade it in bc they will only give us 1/2 of what we paid for it 2 yrs ago. Nightmare and makes me sick that Ford doesn't care.

- Chadds Ford, PA, USA

problem #2

Jan 012011


  • 70,000 miles
The contact owns a 2006 Mercury Mountaineer. The contact stated that there was a leak in the radiator. The vehicle was taken to a repair shop where the vehicle was repaired by replacing the radiator. The failure recurred and the contact needed a second replacement however the vehicle was not repaired a second time. The manufacturer was not made aware of the failure. The current mileage was 100,000. The approximate failure mileage was 70,000.

- North Hollywood, CA, USA

problem #1

Jun 292012


  • 76,500 miles
Vehicle starting missing, then shaking. Had spark plugs replaced and 3 broke off and stuck. Needed special tool/equipment to get out. Very costly.

- Millersville, MD, USA

Not what you are looking for?