Mercury Mariner problems
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Mercury Mariner model years
Common Mercury Mariner problems
The Mercury Mariner, a compact crossover SUV manufactured between 2005 and 2011, has been known to have several common problems. These issues have been reported by owners and have been compiled from various sources, such as CarComplaints.com and the CarParts.com blog.
- Transmission Failure: Transmission failure is a common problem with the Mercury Mariner, with the 2006 model year being particularly affected. This issue has an average cost to fix of $3,700 and an average mileage of 48,000 mi. Transmission failure can lead to a variety of problems, including difficulty shifting, slipping, and a complete loss of drive power.
- Blower Motor Problems: Blower motor problems have also been reported with the Mercury Mariner. This issue can affect the vehicle's heating and cooling system, making it difficult to maintain a comfortable temperature inside the vehicle.
- Cooling Pump Failure: Many owners of hybrid Mercury Mariners have reported that the cooling pump failed. This problem can lead to overheating and can potentially cause damage to other components of the vehicle's hybrid system.
These common problems with the Mercury Mariner can lead to costly repairs and can affect the vehicle's overall reliability. It is important for owners to stay aware of these issues and to address them promptly to ensure the safety and longevity of their vehicle.
What year to avoid Mercury Mariner?
Mariner Generations
The Mariner has 2 generations, each with their own issues. Using the same PainRank™ system we've determined that you're better off avoiding the 1st generation (2005–2007).
Is a Mercury Mariner a reliable vehicle?
The Mercury Mariner received mixed reviews from owners and good scores from users, with a reliability rating of 3.7 out of 5.0 on RepairPal. Some of the most common problems of the Mercury Mariner include steering shaft issues, power steering failure, transmission failure, and blower motor problems.
What are common problems with Mercury?
Depending on the type and amount, exposures to mercury can damage the nervous system, kidneys, liver and immune system. Breathing mercury vapors can harm the nervous system, lungs and kidneys. Mercury vapors can pass easily from the lungs to the bloodstream.
Are Mercury mariners expensive to maintain?
Mercury Mariner Repair & Maintenance Costs
The annual maintenance cost of a Mercury Mariner is $497. Repair and maintenance costs vary depending on age, mileage, location and shop.
Percentage distribution of complaints by Mercury Mariner years
We have researched Mercury problems and analysed all the complaints filed against Mercury Mariner cars and compiled the top 5 most problematic Mercury Mariner model years:
- Mercury Mariner 2008
- Mercury Mariner 2009
- Mercury Mariner 2010
- Mercury Mariner 2011
- Mercury Mariner 2005
Below you can see the percentage distribution of known problems by Mercury Mariner model years.
Distribution of the number of complaints by Mercury Mariner years
We've also compiled a chart for you with the number of complaints about Volkswagen Jetta cars of certain model years:
Mercury Mariner car problems categorized by type of issue
After analysing all complaints related to Mercury Mariner , it was concluded that the most common issues with these cars are:
- Steering problems
- Power train problems
- Vehicle speed control problems
- Engine problems
- Fuel/propulsion system problems
The graph below shows statistics for all Mercury Mariner vehicle components and the number of complaints received.
Distribution of the number of complaints where the accident occurred by Mariner model years
A total of 35 complaints were registered in which the accident occurred. In the graph you can see the distribution of the number of complaints by model year.
Distribution of the number of complaints with fire by Mariner model years
There were a total of 2 complaints that resulted in a fire. In the graph you can see the distribution of the number of complaints by model year.
Distribution of the number of complaints with injuries by Mariner model years
There were a total of 36 complaints that resulted in a injuries. In the graph you can see the distribution of the number of complaints by model year.
The NHTSA has received 1280 complaints about various vehicle components related to the Mercury Mariner . Below are the 25 most recent complaints reported for Mercury Mariner vehicles.
Latest 25 complaints
Mercury Mariner 2008
- Date Of Incident: 2024-10-20
- Date Complaint: 2024-10-22
- VIN: 4M2CU97158K
- Components: STEERING
- Summary: The contact owns a 2008 Mercury Mariner. The contact stated upon starting the vehicle, the steering wheel was significantly difficult to turn. There was no warning light illuminated. The vehicle was towed to an independent mechanic, where the contact was informed that the electric power steering had failed. The mechanic determined that the failure was related to NHTSA Campaign Number: 14V284000 (Steering). The dealer was notified of the failure and informed the contact that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 104,392.
Mercury Mariner 2009
- Date Of Incident: 2024-10-03
- Date Complaint: 2024-10-04
- VIN: 4M2CU87759K
- Components: STEERING
- Summary: The contact owns a 2009 Mercury Mariner. The contact stated that while her son was driving at various speeds, the vehicle intermittently experienced a loss of power steering assist. No warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to NHTSA Campaign Number: 14V284000 (Steering); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 170,000.
Mercury Mariner 2009
- Date Of Incident: 2024-09-03
- Date Complaint: 2024-10-02
- VIN: 4M2CU97G99K
- Components: STEERING
- Summary: The power steering on my vehicle has failed and the repair shop stated there is an expired recall for the steering on this vehicle from 2014. I bought my vehicle (2009 Mercury Mariner) 1 year ago. VIN: [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Mercury Mariner 2009
- Date Of Incident: 2024-08-20
- Date Complaint: 2024-09-03
- VIN: 4M2CU97G59K
- Components: STEERING
- Summary: The contact owns a 2009 Mercury Mariner. The contact stated while driving 30-35 MPH, the vehicle lost power steering functionality. The contact was able to pull to the side of the road. The contact turned off and restarted the vehicle after 15-20 minutes, and the power steering became functional. The contact was able to continue driving. The contact stated that the failure recurred several times while driving. The dealer was contacted and charged a fee for diagnostic testing. The vehicle was not diagnosed or repaired. The contact related the failure to NHTSA Campaign Number: 14V284000 (Steering); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 131,000.
Mercury Mariner 2008
- Date Of Incident: 2022-10-13
- Date Complaint: 2024-06-29
- Crash: 1
- VIN: 4M2CU81ZX8K
- Components: UNKNOWN OR OTHER
- Summary: Car was in accident in October of 2022 has been lost since
Mercury Mariner 2009
- Date Of Incident: 2017-06-13
- Date Complaint: 2024-06-13
- VIN: 4M2CU81G19K
- Components: STEERING
- Summary: The contact's fiancée owns a 2009 Mercury Mariner. The contact stated that the vehicle was previously serviced under NHTSA Campaign Number: 14V284000 (Steering); however, a month after the recall repair, the vehicle lost power steering functionality while driving at an undisclosed speed. The dealer was notified of the failure and informed the contact that a fee would be charged for a diagnostic test. The vehicle was not diagnosed. The dealer later informed that the software for the power steering control module (PSCM) was previously updated under the recall; however, the manufacturer informed the contact that there was no record of the recall repair in the vehicle repair history. The manufacturer referred the contact to the NHTSA Hotline for assistance. The vehicle was not diagnosed or repaired. The failure mileage was unknown.
Mercury Mariner 2009
- Date Of Incident: 2024-03-21
- Date Complaint: 2024-06-07
- VIN: 4M2CU87719K
- Components: STEERING
- Summary: My 2009 Mercury Mariner’s steering wheel started locking up 3 months ago, making it impossible to drive. I looked up the make and model to see if there was a safety recall on it, and there was, but my VIN wasn’t included in the recall campaign, even though it fits the criteria exactly. ///////////Ford Motor Company (Ford) is recalling certain model year 2008-2011 Ford Escape and Mercury Mariner vehicles manufactured August 18, 2006, through September 11, 2010. The affected vehicles have a steering torque sensor that may not be able to properly detect driver steering input. As a result, the system could remove the Electric Power Steering (EPS) assist.////
Mercury Mariner 2008
- Date Of Incident: 2024-03-08
- Date Complaint: 2024-05-22
- VIN: 4M2CU97178K
- Components: STEERING
- Summary: The steering wheel does not return to center when making turns. It is more pronounced during left turns. This is a dangerous condition that could result in the vehicle going left or right of center and striking pedestrians, bicyclists, oncoming traffic, fixed objects. An independent service center confirmed that the issue was a bad torque sensor and bad motor in the steering column. I have schedule a police inspection for 5/23/2024. Issue first appeared this year. No warnings.
Mercury Mariner 2008
- Date Of Incident: 2023-12-22
- Date Complaint: 2024-05-03
- VIN: 4M2CU81168K
- Components: STEERING
- Summary: The contact owns a 2008 Mercury Mariner. The contact stated while driving at various speeds, the steering wheel became loose while steering in either direction. As the failure persisted, the steering wheel had become stiff and the "Power Steering Assist" warning message appeared on the instrument panel. The contact stated that excessive force was needed to steer the vehicle due to the failure. The vehicle was taken to an independent mechanic where the vehicle was diagnosed with power steering assist failure. The mechanic was unable to obtain the part needed to repair the vehicle. Upon investigation, the contact discovered NHTSA Campaign Number: 14V284000 (Steering) which was linked to the failure. Neither the dealer nor the manufacturer were notified of the failure. The vehicle had yet to be repaired. The failure mileage was unknown.
Mercury Mariner 2009
- Date Of Incident: 2024-03-01
- Date Complaint: 2024-04-27
- VIN: 4M2CU29309K
- Components: STEERING,UNKNOWN OR OTHER
- Summary: Months back there were times the power steering would go out, it would be for short amount of times and always came back. As of 40+ days ago the power steering has totally gone out and has not once come back. The dash says "power steering assist fault" The other issue is the wrench on the dash. It's normally after driving for quite some time. Even if there has been a break on the car while grocery shopping etc. when it comes on the car goes into limp mode. VERY DANGEROUS as we cannot tell when it'll happen. There has been multiple times the light turns green we take off, get to about 15-20MPH and she just stops. The dash reads to safetly pull over and I believe it says to shut off the car. This has been happening for 5+ months. There is also random over heating when that happens. This is based on how I remember it. Because of the safety issues I have not driven the vehicle. My husband drives it because he can handle no power steering better then me... Not that it's better for anyone to use..
Mercury Mariner 2008
- Date Of Incident: 2023-11-20
- Date Complaint: 2024-03-05
- VIN: 4M2CU87148K
- Components: STEERING
- Summary: The contact owns a 2008 Mercury Mariner. The contact stated while driving 50 MPH, the vehicle lost power steering functionality. There was no warning light illuminated. The vehicle was taken to a local mechanic who replaced the steering sensor however, the contact stated the failure persisted and the local mechanic was unable to repair the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline. The approximate failure mileage was 160,000.
Mercury Mariner 2008
- Date Of Incident: 2024-02-07
- Date Complaint: 2024-02-09
- VIN: 4M2CU97158K
- Components: STEERING
- Summary: Power Steering Assist Fault. Loss of power steering.
Mercury Mariner 2010
- Date Of Incident: 2023-10-01
- Date Complaint: 2024-02-04
- VIN: 4M2CN9HG9AK
- Components: STEERING
- Summary: The power steering assist is malfunctioning and it is available for inspection upon request. The steering wheel is very difficult to turn, it's as if the power steering assist is keeping the wheel from turning. No, but I spoke to someone at Ford and they said that it sounded like my car should be in the recall that was announced for my vehicle type but my VIN was not included in the recall. My car has not been inspected by anyone but it says right on the dash board digital display that there is a "Power Steering Assist Fault". Ford does this with many vehicles they recall, a lot of vehicles that should be included in the recalls are not and we're supposed to foot the bill for their lack of concern for public safety? It's going to cause an accident but it's my only working car and I can't afford to pay for their mistakes. How many have died due to their negligence I'm wondering.
Mercury Mariner 2009
- Date Of Incident: 2024-01-09
- Date Complaint: 2024-01-09
- VIN: 4M2CU91729K
- Components: STEERING
- Summary: The contact owns a 2009 Mercury Mariner. The contact stated while starting the vehicle, the vehicle lost power steering functionality. The contact stated that the steering wheel was locked. The message "Power Steering Assist Fault" was displayed. The dealer was notified of the failure and referred the contact to the manufacturer for assistance. The vehicle was not diagnosed or repaired. The contact stated that the vehicle was previously repaired under NHTSA Campaign Number: 14V284000 (Steering) however, the failure persisted. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 150,000.
Mercury Mariner 2009
- Date Of Incident: 2023-11-08
- Date Complaint: 2024-01-08
- VIN: 4M2CU87G29K
- Components: STEERING
- Summary: The contact owns a 2009 Mercury Mariner. The contact stated while driving around a traffic circle and making a left turn at approximately 20 MPH, the power steering failed to function as intended. The contact stated there was no warning light illuminated. The contact stopped the vehicle and turned off and restarted the vehicle however, the vehicle failed to regain power steering functionality. The contact drove the vehicle to the residence. The vehicle had not been diagnosed by the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was informed of the failure. The contact researched online and related the failure to NHTSA Campaign Number: 14V284000 (Steering). The failure mileage was approximately 175,000.
Latest 5 recalls Mercury Mariner
The National Highway Traffic Safety Administration (NHTSA) has issued 22 recalls for different components of the Mercury Mariner.You can explore the year of the Volkswagen Jetta you are interested in by selecting it from the list.
- Model: Mercury Mariner 2011
- Report Received Date: 2016-10-26
- Manufacturer: Ford Motor Company
- Components: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
- Summary: 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.
- Consequence: A fuel leak in the presence of an ignition source increases the risk of a fire.
- 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. Interim notices were mailed to owners on December 13, 2016. Owners will receive a second notice when remedy parts become available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S41.
- Model: Mercury Mariner 2010
- Report Received Date: 2016-10-26
- Manufacturer: Ford Motor Company
- Components: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
- Summary: 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.
- Consequence: A fuel leak in the presence of an ignition source increases the risk of a fire.
- 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. Interim notices were mailed to owners on December 13, 2016. Owners will receive a second notice when remedy parts become available. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 16S41.
- Model: Mercury Mariner 2007
- Report Received Date: 2015-09-29
- Manufacturer: Ford Motor Company
- Components: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT
- Summary: Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with remanufactured one that was rebuilt between June 11, 2015 through July 15, 2015. These service repair part transmissions have a shift lever bolt that may not be properly tightened. As a result, the shift control lever could disengage from the transmission without warning.
- Consequence: If the shift lever disengages from the transmission, a driver may be unable to shift gear positions and the indicated shift position may not represent the gear position the vehicle is in. Should a disengagement occur while the vehicle is being driven, when the driver goes to stop and park the vehicle, the gear selection indicator may show that the transmission is in the "PARK" position, but the vehicle transmission may not actually be in the "PARK" gear position. If the vehicle is not in the "PARK" position there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
- Remedy: Ford will notify owners, and dealers will inspect the transmissions and either tighten the manual shift lever bolt or replace the manual shift lever assembly. These repairs will be performed free of charge. The recall began on October 23, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S28.
- Model: Mercury Mariner 2005
- Report Received Date: 2015-09-29
- Manufacturer: Ford Motor Company
- Components: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT
- Summary: Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with remanufactured one that was rebuilt between June 11, 2015 through July 15, 2015. These service repair part transmissions have a shift lever bolt that may not be properly tightened. As a result, the shift control lever could disengage from the transmission without warning.
- Consequence: If the shift lever disengages from the transmission, a driver may be unable to shift gear positions and the indicated shift position may not represent the gear position the vehicle is in. Should a disengagement occur while the vehicle is being driven, when the driver goes to stop and park the vehicle, the gear selection indicator may show that the transmission is in the "PARK" position, but the vehicle transmission may not actually be in the "PARK" gear position. If the vehicle is not in the "PARK" position there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
- Remedy: Ford will notify owners, and dealers will inspect the transmissions and either tighten the manual shift lever bolt or replace the manual shift lever assembly. These repairs will be performed free of charge. The recall began on October 23, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S28.
- Model: Mercury Mariner 2008
- Report Received Date: 2015-09-29
- Manufacturer: Ford Motor Company
- Components: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:FLOOR SHIFT
- Summary: Ford Motor Company (Ford) is recalling certain model year 2001-2008 Ford Escape and Mercury Mariner vehicles manufactured March 31, 2001, to September 1, 2009. The affected vehicles are equipped with either a 2.3L or 3.0L engine and have had their CD4E transmission replaced with remanufactured one that was rebuilt between June 11, 2015 through July 15, 2015. These service repair part transmissions have a shift lever bolt that may not be properly tightened. As a result, the shift control lever could disengage from the transmission without warning.
- Consequence: If the shift lever disengages from the transmission, a driver may be unable to shift gear positions and the indicated shift position may not represent the gear position the vehicle is in. Should a disengagement occur while the vehicle is being driven, when the driver goes to stop and park the vehicle, the gear selection indicator may show that the transmission is in the "PARK" position, but the vehicle transmission may not actually be in the "PARK" gear position. If the vehicle is not in the "PARK" position there is a risk the vehicle will roll away as the driver and other occupants exit the vehicle or anytime thereafter. A vehicle rollaway increases the risk of injury to exiting occupants and bystanders.
- Remedy: Ford will notify owners, and dealers will inspect the transmissions and either tighten the manual shift lever bolt or replace the manual shift lever assembly. These repairs will be performed free of charge. The recall began on October 23, 2015. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S28.
Latest negative Mercury Mariner car reviews
Latest positive Mercury Mariner car reviews
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Vehicle year: 2007
I've been driving a Lexus SC400 for the past eight years. However, after purchasing a home on a hill, I realized that my car wasn't practical for hauling anything for the house, and it was useless in the snow. That's why I decided to switch to an SUV. Although I was hesitant at first, I'm thrilled with my choice of the Mercury Mariner. I'm really enjoying the look and feel of the Mariner, as well as the attention to detail in both the exterior and interior. The SUV feels incredibly solid and has a smooth ride. I'm excited to see how the Mariner handles in the Seattle rain and snow.
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Vehicle year: 2011
I love the car, but I always find dealing with dealerships and mechanics frustrating and contentious. It's just one of those things, isn't it?
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Vehicle year: 2007
I really like this car, but I do wish the mileage was better. I've been doing a lot of driving lately and I think a hybrid would have been a better choice. I was told it would pay for itself, but unfortunately the cost of gasoline has gone up a lot since I bought this car. It gets around 20-22 mpg in town and 22-24 mpg on the road.
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Vehicle year: 2010
Hi there! I hope you're doing well. I wanted to share that my wife and I have been on the hunt for a new ride. She's been driving a 2005 Escape and absolutely loves it! We recently checked out the New Highlander, Venza, CRV, and new Escape, but none of them quite fit the bill. The new Escape felt a bit cramped for longer trips, the Highlander was too big, the Venza was too expensive with its 20
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Vehicle year: 2008
I really love this car! It's been a while since I've been excited about a car, but this one makes me very happy. It gets great gas mileage, with 32mpg on the highway and 26-28mpg in the city! Even my husband, who is just under 7ft tall, can drive and sit in the car very comfortably. And when he's in the driver's seat, there's still plenty of leg room in the back seat. It drives great on the highway, and I've put a lot of highway miles on it. My son has already claimed it for when he gets his license. Plus, it has super cargo room! It's sporty, fun, and very economical to drive. I really think they should promote this vehicle more aggressively!
Loy Rolfson 2024-11-14
Vehicle year: 2011
I got this vehicle after driving a Mountaineer for 6 years. While the Mariner was a little disappointing in comparison, I did get a great deal on it. The gas mileage and comfort are both okay, but the drive can be a bit noisy at times. Unfortunately, even though I got the 'flex fuel' model, I haven't been able to find any flex fuel in my area of the country. It's a bit frustrating, but overall I'm still happy with my purchase.
Brooks Mohr 2024-11-12
Vehicle year: 2008
I purchased the 2008 Mercury Mariner in March 2007, but unfortunately, I have had a number of issues with it. During the first year, the car would stall without warning, and despite bringing it to the dealer, they were unable to find anything wrong with it. It took two additional visits before the issue was finally resolved. More recently, while driving on Interstate 80 at around 65 mph, the car stalled again without warning and slowed down rapidly. As a result, I have lost confidence in the reliability of this vehicle and will not be purchasing a Mercury, Lincoln or Ford again. I would advise others to steer clear of this model.
Laverna Robel 2024-09-18
Vehicle year: 2006
I bought this car used and was impressed with its overall style from the first sight. The car runs excellently and the sound system meets standards. However, I found the seat warmer buttons to be inconveniently placed, as the passenger seat automatically turns on when someone gets in. Additionally, the car can be quite loud and takes all bumps, big or small, very hard. Unfortunately, there seems to be no give in the suspension or shocks when riding over anything that disrupts the smoothness of the asphalt. Furthermore, it does not handle water very well and tends to hydroplane even in the smallest amount of water. I would not recommend it for any type of off-roading. Lastly, the fuel mileage is very poor.
Clement Lebsack 2024-09-17
Vehicle year: 2011
In November 2009, I purchased a Mercury Mariner. Unfortunately, in January, the car began to make a squealing noise when started in certain temperatures. Despite taking the car back to the dealer four times and contacting Ford customer care, the issue remains unresolved. However, I am confident that a solution can be found and I will continue to pursue a resolution. It is important to me that my vehicle operates smoothly and I am willing to take the necessary steps to ensure that it does.
Lucas Harris 2024-08-21
Vehicle year: 2009
Hello! I wanted to share some information with you that you might find helpful. It turns out that the capless fuel system that Ford has been installing on nearly all its vehicles for the past two years can sometimes leak when you top off the gas tank. My dealership confirmed this issue in both 2009 and 2010 models. While Ford will not make any repairs for this, they do advise customers not to top off the gas tank. I hope this information helps!