WHILE DRIVING THE MARINER AT 45 MPH ON A BUSY STREET, THE ENGINE WENT INTO LIMP MODE, LOST ALL ACCELERATION AND SLOWED TO 5 MPH. I WAS NEARLY REAR-ENDED BY THE TRUCK BEHIND ME AND WAS FORCED TO PULL UP ONTO A SIDEWALK, DAMAGING MY TIRE. PULLED THE CODES ON THE CAR AND GOT A P111 CODE. DID SOME SEARCHING ON THE INTERNET AND FOUND THAT THIS IS A COMMON ISSUE AND AN EXTREME SAFETY HAZARD. I WAS V…
2009 Mercury Mariner fuel system problems
moderate 15 complaints filed with NHTSA · avg repair $1,200
Complaints
15
Recalls
0
Crashes
0
Avg fix
$1,200
What owners are reporting 1 most recent
Common questions
How serious is the fuel system problem on the 2009 Mercury Mariner?
It's a documented issue but not catastrophic. 15 complaints have been filed. Repairs average $1,200 and most owners catch it before it causes a breakdown.
At what mileage does the fuel system 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 $1,200 for fuel system 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 fuel system?
No active recalls currently cover fuel system 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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