Problems · by component

2010 Mercury Mariner fuel/propulsion system problems

57 owner complaints to NHTSA about the 2010 Mercury Mariner cite fuel/propulsion system, 20% of all 279 complaints for this model year.

Complaints
57
20% of all complaints
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the fuel/propulsion system

Verbatim from NHTSA complaints, newest first
“Engine light came on after putting fuel in my car it is hapless the codes read emission and fuel issues to replace cap but it is hapless it says it's an issue that needs to be fixed now my engine light won't go off”
Owner complaint to NHTSAFiled May 11, 2025Fuel/propulsion systemODI 11660227
“My vehicle keeps throwing codes for the EVAP system. I have noticed many of these vehicles have to have their Purge Valve Cannister replaced along with the selenoid for it. I have to replace mine. Is that not a defect if the vehicle? I have owned several vehicles and never had this issue with any of them.”
Owner complaint to NHTSAFiled Sep 9, 2023Unknown or other, Fuel/propulsion systemODI 11543619
“I bought a 2010 Mercury Mariner on June 22, 2023 from a local dealer. There are several recalls associated with the make and model of the vehicle, but they do not appear to be associated with the VIN on my vehicle. However, the recalls on the vehicle appear to be affecting my vehicle and there is a warning on the dashboard of my car about the fuel system which is one of the recalls on the vehicle. Fuel Delivery System is causing issues in my vehicle.”
Owner complaint to NHTSAFiled Aug 13, 2023Fuel/propulsion systemODI 11538243
“I recently purchase 2010 Mercury Mariner. There is a few errors appearing on the screen in front of the steering wheel. One of the error is "CHECK FUEL LINES." It also has an error about the tire pressure sensor. It also rides roughly, but the wheels are like new, so it feels like the suspension or shocks have something wrong with them. Also, there is a lot of play in the steering wheel when driving it. When I went to check on the recalls in the system by putting in my VIN, it shows that there are no recalls on my vehicle. However, these errors and issues are connected to the recalls for my vehicle. I am sure that these recalls have not been taken care of for this vehicle and they need to be fixed.”
Owner complaint to NHTSAFiled Jun 20, 2023Steering, Suspension, Fuel/propulsion systemODI 11527947
“My vehicle has been running out of gas extremely quick. It also leaks underneath when I am pumping gas into the Mariner. I am having a loud thunking sound underneath the vehicle an when I let off the accelerator, my car slowly comes to a hault. My power steering went out one day also without warning. I can't figure the problem out except I seen a recall for the power steering module or some sort that has malfunctioned an causes the computer to erase the power steering sensor completely clean of it's existence. Please help!”
Owner complaint to NHTSAFiled May 9, 2022Fuel/propulsion systemODI 11463971
“THE VEHICLE WAS IN MOTION AT A STOPLIGHT. THE LIGHT HAD TURNED GREEN, AND THE VEHICLE WAS BREAKING TO STOP BEHIND THE FIRST VEHICLE. I PRESSED THE GAS PEDAL TO FOLLOW THE FIRST VEHICLE AND THE CAR STALLED. THE CAR COULD NOT BE TURNED BACK ON OR PUT IN MOTION. THERE WAS NO INDICATION OF A PROBLEM PRIOR TO THIS THROTTLE BODY FAILURE. THE CAR WAS PUSHED OFF THE ROAD BY 3 PEOPLE AND INTO A NEARBY PARKING LOT. THE PROBLEM THAT MADE THE VEHICLE UNSAFE WAS A DEFECTIVE FORD THROTTLE BODY. THE REFERENCE CONSUMER SATISFACTION PROGRAM 13N03. I RECEIVED THE RECALL NOTICE JUNE 2014, BUT FORD ONLY SUGGESTED A RECALIBRATION (NOT REPLACEMENT). THE RECALIBRATION WAS COMPLETED AT FORD AUTONATION ON JUNE 23, 2014. FORD HAD ESTIMATED A THROTTLE BODY REDUCTION IN MOVABILITY AND NOT FAILURE. THE MILEAGE OF THIS MERCURY MARINER ON THE DATE OF REPAIR WAS 142551 AND THE IN-SERVICE DATE, 06/18/2010. THEREFORE, THE REIMBURSEMENT SHOULD BE COVERED UNDER FORD'S EXTENDED WARRANTY OF 150000 MILES/10 YEARS. THE REPAIR WAS COMPLETED 06/08/2020. TEN DAYS PRIOR TO THE EXPIRATION OF THE EXTENDED WARRANTY. FORD CLAIMS THEY WILL NOT REIMBURSE FOR THE THROTTLE BODY FAILURE. THIS WAS WELL-DOCUMENTED…”
Owner complaint to NHTSAFiled Jun 15, 2020Engine, Fuel/propulsion systemODI 11328932

Showing 6 of 57 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.