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2005 Mercury Montego fuel system problems
moderate
Owners of the 2005 Mercury Montego have filed 4 NHTSA complaints about the fuel system at roughly $1,200 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation.See fuel system across all vehicles →
Complaints
4
Recalls
1
Avg fix
$1,200
fuel system complaints on the Mercury Montego, by model year
Of the 4 fuel system complaints filed for the 2005 Mercury Montego,
here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
0 (0%)
25-50k
0 (0%)
50-75k
1 (100%)
75-100k
0 (0%)
100-125k
0 (0%)
125-150k
0 (0%)
150k+
0 (0%)
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted.
Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits
and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA fuel system complaint has been filed on this vehicle in over 14 years — the issue may be aging out of the active population.
On certain passenger vehicles, the straps that secure the fuel tank to the vehicle body may break, causing the fuel tank and fuel tank heat shield to drop on the driveshaft (all wheel drive vehicles) or exhaust system (front wheel drive vehicles)
If this happens, drivers may notice a noise or a fuel leak. A fuel leak in the presence of an ignition source could result in a fire.
Fix: Dealers will replace both fuel tank straps. The recall began on december 1, 2005. Owners may contact Ford at 1-800-392-3673.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering fuel system on this vehicle — documented
repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall
(it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Service Bulletin0747
MIL ON WITH DTC P0191 - FUEL RAIL PRESSURE SENSOR CIRCUIT PERFORMANCE.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting
1 most recent
fuel system · 53,018 mi
· filed 11/04/2011
The check engine light came on. I took the car in for service. I was told that the throttle body needed to be replaced. That cost me $736.83. This was done on 10/06/2010. Now again the check engine light has come on so I took the vehicle in for service. I am now told that the throttle body has gone bad. This time the estimate is $950.00. My mileage is 90,361. Now a little more that a year…
Had fuel system trouble with your 2005 Mercury Montego?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the fuel system problem on the 2005 Mercury Montego?
It's a documented issue but not catastrophic. 4 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?
Based on the 4 complaints filed, fuel system issues most often appear around 78,251 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
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?
Yes — 1 active recall(s) cover fuel system issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Mercury/Montego.
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.