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 I…
2007 Mercury Mountaineer powertrain problems
severe 23 complaints filed with NHTSA · avg repair $2,500
Complaints
23
Recalls
0
Crashes
3
Avg fix
$2,500
What owners are reporting 7 most recent
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 …
2007 MERCURY MOUNTAINEER. CONSUMER WRITES IN REGARDS TO ACCELERATION AND CONSOLE LIGHTING ISSUES AND PROBLEMS WITH BACK WINDSHIELD WIPERS. *SMD
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 KNOWING…
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 …
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 H…
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 FA…
Common questions
How serious is the powertrain problem on the 2007 Mercury Mountaineer?
It's a meaningful issue. 23 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
Some links on this page are affiliate links.