Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2010 Mercury Mariner owners, lightly cleaned up (personal details are redacted by NHTSA).
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.
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!
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.
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.
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
After receiving Ford's recall notice 16s41/16v-777 (fuel delivery module potential leak), my husband & I took our 2010 Mercury Mariner to lebanon Ford to perform recall "repair". We were not having an issue with the Mariner, but we were following Ford's instructions (via their mailed recall notice to us) to have the recall done. Now, our Mariner is messed up! It now won't start without a delayed crank (we have video recordings of how long it now takes for our Mariner to start!) & sometimes while driving, the Mariner jerks (both problems seem to be as though the car is not getting fuel). We made a 2nd trip to lebanon Ford after informing them of the issue they created, but they did not fix the delayed crank issue or the car jerking issue! Lebanon Ford service is stating they can only perform the recall repair "according to Ford's guidelines". …
Tl* the contact owns a 2010 Mercury Mariner. The contact noticed a "check fuel; failed inlet" warning message and the check engine warning indicator illuminated. The dealer (autonation Ford frisco 6850 tx-121, frisco, tx, 75034) was made aware of the failure. The vehicle was not diagnosed due to the diagnostic fee and because the vehicle was over the 10,000 mile warranty for the year. The vehicle was taken to auto zone where the contact was able to retrieve error codes. The vehicle was then taken to an independent mechanic who confirmed that the vehicle was included in NHTSA campaign number: 16V777000 (fuel system, gasoline:delivery:fuel pump). The contact stated that the manufacturer exceeded a reasonable amount time for the repair. The manufacturer was not made aware of the failure and was not contacted. The failure mileage was approximately 83,000. …
Tl* the contact owns a 2010 Mercury Mariner. The contact stated that a strong odor of gas was detected inside the vehicle. The vehicle was taken to chenoweth Ford inc. (1564 e pike st, clarksburg, wv 2630[phone]) where it was serviced under NHTSA campaign number: 16V777000 (fuel system, gasoline) but the remedy failed to repair the vehicle. The contact stated that the failure did not occur until after the recall repair. The vehicle was taken back to the same dealer for the failure and the contact was informed that the purge value needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 129,105.
Tl* the contact owns a 2010 Mercury Mariner. The contact stated that the fuel delivery module leaked and there was a puddle under the vehicle. The contact also noticed a fuel leak under the back seat of the vehicle. The contact stated that the fuel delivery module was replaced on two separate occasions. Larry h. Miller Ford mesa (located at 460 e auto center dr, mesa, az 85204, [phone]) was contacted by phone and an appointment was scheduled to have the vehicle diagnosed. The vehicle was not repaired. The vehicle was not included in NHTSA campaign number: 16V777000 (fuel system, gasoline). The manufacturer was notified. The approximate failure mileage was 180,000.
Tl* the contact owns a 2010 Mercury Mariner. The contact stated that the engine warning light as well as a fuel error message was displayed on the instrumental panel. The contact stated that the engine had to be turned on and off several times to remove the fuel error message however, the engine warning light remained illuminated. The vehicle was not taken to a dealer for diagnosis or repairs. The manufacturer was contacted and advised the contact that the vehicle was not included in NHTSA campaign number: 16V777000 (fuel system, gasoline). The failure mileage was 130,000.
Related recalls
Fuel system, gasoline › Delivery › Fuel pump
Ford Motor Company (Ford) is recalling certain model year 2010-2012 Ford Escape vehicles manufactured February 26, 2009, to April 29, 2012, and 2010-2011 Mercury Mariner vehicles manufactured February 25, 2009, to December 12, 2010. On vehicles with a 3.0L engine, the Fuel Delivery Module (FDM) may crack, causing a fuel leak.
Remedy: Ford will notify owners, and dealers will replace the FDM flange with one that has a redesigned fuel supply port, free of charge. Remedy parts are currently unavailable.
Fuel System complaints in other Mariner years
Frequently asked questions
How common are fuel system problems on the 2010 Mercury Mariner?
NHTSA has 63 complaints about the fuel & propulsion system of the 2010 Mercury Mariner, 23% of the model year's 270 complaints. The component named most often is delivery (1 mentions).
Is there a recall for 2010 Mercury Mariner fuel system problems?
Yes — NHTSA recall 16V-777 (fuel pump, Oct 26, 2016). Recall repairs are free at authorized dealers.
At what mileage do 2010 Mercury Mariner fuel system problems start?
Half of the complaints with a recorded mileage happened before about 49,000 miles, and 4% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.