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 D…
2005 Mercury Mountaineer engine problems
moderate 8 complaints filed with NHTSA · avg repair $3,100
Complaints
8
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 3 most recent
TL*THE CONTACT OWNS A 2005 MERCURY MOUNTAINEER. WHILE DRIVING 35 MPH, THE VEHICLE STALLED AND THE ENGINE SHUT OFF. THIS HAS OCCURRED THREE TIMES SINCE 2006. THE FAILURE IS MOST COMMON WHILE DRIVING DOWN AN INCLINE AND WHEN THE CRUISE CONTROL WAS ACTIVATED. THE CHECK ENGINE LIGHT WAS ILLUMINATED AND THE POWER STEERING DOES NOT OPERATE NORMALLY. THE VEHICLE RESTARTED AFTER TEN TO FIFTEEN MINUTE…
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. *TR
Common questions
How serious is the engine problem on the 2005 Mercury Mountaineer?
It's a documented issue but not catastrophic. 8 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine 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 $3,100 for engine 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 engine?
No active recalls currently cover engine 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.
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