Some 2019 MKC, 2019-2021 Edge/Nautilus/Escape/Ranger/Explorer, 2020-2021 Corsair, and 2021 Bronco Sport vehicles equipped with 2.0L and 2.3L EcoBoost engines may exhibit a light to moderate ticking type noise at idle (600-700 RPM). The noise is usually more prominent in the area of the high-pressure fuel pump, located on the top of the engine just behind the number 4 ignition coil. This noise is not detrimental to engine function and has no short or long-term effects on engine durability. This an operating characteristic of these engines and no repairs should be attempted.
full bulletin at NHTSA ↗2007 Lincoln MKX fuel system problems
severe 15 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$1,200
2crashes
2fires
2injuries
When does it fail?
Of the 15 fuel system complaints filed for the 2007 Lincoln MKX, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
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 12 years — the issue may be aging out of the active population.
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.
Certain 2007-2008 Model Year Edge and MKX Vehicles Not Covered Under Safety Recall 14S22 Fuel Tank Corrosion Inspection and Repair road salt use, moisture and salt may become trapped under the fuel tank mounting reinforcement brackets at the four corners where the fuel tank is attached to the vehicle. Over time, corrosion under these reinforcement brackets can spread to the fuel tank which can result in a fuel leak. A fuel leak in the presence of an ignition source may result in a fire. Owners that operate their vehicle in a corrosive environment (e.g., where road salt is used in winter months) or have concerns about their fuel tank are eligible for a repair under this Regional Program.
full bulletin at NHTSA ↗Fuel Tank Corrosion Inspection and Repair REASON FOR THIS PROGRAM In some of the affected vehicles that are operated in high-corrosion environments associated with road salt use, moisture and salt may become trapped under the fuel tank mounting reinforcement brackets at the four corners where the fuel tank is attached to the vehicle. Over time, corrosion under these reinforcement brackets can spread to the fuel tank which can result in a fuel leak. A fuel leak in the presence of an ignition source may result in a fire. Owners that operate their vehicle in a corrosive environment (e.g., where road salt is used in winter months) or have concerns about their fuel tank are eligible for a repair
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
2007 MKX owners report strong gasoline odor appearing after 6–7 years of ownership, typically between 70,000 and 260,000 miles. Inspection reveals fuel leaking from the fuel tank seam, most often on the rear or left side. One mechanic identified a crushed sealing ring at the tank opening as the culprit, attributing corrosion to ethanol in fuel. The tank part number carries a revision/update in manufacturer records, but details remain undisclosed.
Fuel tank replacement runs $1,500–$2,000 through Lincoln dealers; one independent shop completed the job for $548.58. Lincoln warranty covers only five years or 50,000 miles, leaving owners out of pocket after that. The manufacturer issued recall 14V682000 in October 2014, yet multiple owners waited weeks or months for parts to arrive—some dealers didn't receive replacement tanks until October 2015.
Most critically, two owners report vehicle fires during normal driving. One fire started with smoke from the rear, followed by flames that engulfed the car and caused explosion. The second involved similar presentation. Both vehicles were total losses, and owners suspect fuel tank rupture or failure as the cause. No definitive cause analysis appears in the complaint records.
Failure modes owners describe
Fuel tank seam corrosion and leakage
The fuel tank develops corrosion at the seam or weld, particularly on the rear or left side, causing fuel to leak. Owners report the corrosion is linked to ethanol in fuel and happens around 6-7 years of ownership. The sealing ring at the tank opening can also be crushed due to corrosion.
When: 70,000 to 260,000 miles; typically 6-7 years of ownership
Symptoms owners cite: Strong gasoline odor outside and inside the vehicle; Fuel leaking from tank seam or weld; Visible fuel pooling underneath vehicle; Loss of fuel from tank over hours or days
Repairs/costs cited: Tank replacement cost ranges $1,500 to $2,000 for OEM tank; one independent shop charged $548.58. Mechanic noted revision/update exists for the tank part number but details unknown.
Recalls/TSBs owners mention: NHTSA Campaign 14V682000 (Fuel System, Gasoline); 14V682000 (also referenced as 19V001000 for airbags in one case). Lincoln warranty covers only 5 years/50,000 miles. Multiple owners report long delays for recall parts availability—one dealer waited until October 2015 for parts; another waited 28 days for approval to proceed.
Fuel tank fire/vehicle fire
Two owners report their vehicles caught fire while driving. One narrative indicates fire emerged from the rear of the vehicle; the owner suspects gas tank rupture. The other involved smoke from the back followed by flames engulfing the vehicle.
When: During normal driving operations
Symptoms owners cite: Smoke coming from rear of vehicle; Flames shooting up the side of vehicle; Vehicle becomes fully engulfed in flames; Vehicle makes popping sounds then explodes
Repairs/costs cited: Both vehicles were total losses. Cause not definitively established in NHTSA records but owners attribute it to fuel tank defect.
Recalls/TSBs owners mention: No manufacturer response recorded for fire incidents in narratives.
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
2007 Lincoln mk - 70k. Smelled gasoline several times at different locations today. Further investigation revealed that gasoline is leaking from the seam of the gas tank. Have seen multiple complaints on multiple sites including NHTSA for 2007 Lincoln mkx and the Ford edge(same gas tank assembly). The issue is occurring with these models around the same mileage. Ford needs to put out a recall on…
After noticing same fuel leak under my car , I took them to Ford dealership for inspection. Their technician found that fuel tank is heavily corroded around weld on the rear side of the fuel tank, and that fuel leaks at that place when the fuel tank is full. He told me that tank should be replaced. After that I talked with Lincoln representative and she told me that Lincoln doesn't cover fuel…
Had fuel system trouble with your 2007 Lincoln MKX?
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 2007 Lincoln MKX?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,200.
At what mileage does the fuel system typically fail?
Across the 12 complaints that reported odometer mileage, most fuel system failures cluster between 70,000 and 140,000 miles, with the median around 84,000. A quarter of owners report trouble before 70,000; a quarter make it past 140,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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.
Related
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/2007/Lincoln/MKX.
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.