Ford Flex Fuel System Problems

Owners have filed 193 complaints about fuel & propulsion system problems with the Ford Flex — 10% of all Flex complaints. The worst model years are 2013 (72), 2014 (50) and 2009 (19). Problems typically start around 66,000 miles. 3 related recalls have been issued.

193complaints
2013worst year
66ktypical miles
3related recalls
2crashes
1fires

Fuel System complaints by model year

2009201020112012201320142015201620172018201919166772501832
Fuel System complaints per model year, Ford Flex.
YearComplaintsShare of year's complaintsTypical mileage
201823%55,000 miles
201633%103,000 miles
20151816%29,000 miles
20145020%64,000 miles
20137212%67,000 miles
2012711%88,000 miles
201164%89,000 miles
20101612%74,000 miles
20091910%77,000 miles

Which parts fail

  • Delivery › Fuel pump
    5

Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).

Mileage when the problem started

  • Under 25k
    1710%
  • 25k–50k
    2817%
  • 50k–75k
    5735%
  • 75k–100k
    3019%
  • 100k–150k
    2616%
  • 150k+
    42%

What owners report

Gas smell and electronic issues. I bought my vehicle brand new. I first noticed smelling gasoline after the first oil change, so I had driven several months.the dealership blamed it on my undercoating stating that's what I'm smelling.it's gas definitely.I asked them to drive it a week since the smell comes and goes.they refused.it still does it and I have given up trying to get the dealership to find the issue.they did state the Flex is the same base as the police vehicle that has the gas emission leak.2nd problem is "no key detected" light comes on when driving.just yesterday my back up cam stayed on while driving.it was distracting and I felt a hazzard.I tried turning the vehicle off and on and that didn't work.after parking for an hour and trying again things went back to normal.when the back up cam was locked on the radio controls didn't work and the voice command did not work.I …

2016 Flex · 29,000 miles · Nov 2018

EcoBoost 3.5l vehicle experienced total loss of power and white smoke from tailpipes while driving 65mph on expressway but still ran. Drove straight to an independent service center where they diagnosed low boost pressure DTC and failure of both turbochargers. Towed vehicle to Ford service center where they dug deeper and are now telling me there was a coolant system leak which washed out the engine oil and caused the engine to overheat and the turbos to fail(lock up). There have been numerous documented issues with coolant system leaks and oil supply to turbos causing failures/fire/overheating in EcoBoost engines... Dealer is now telling me the entire engine needs to be replaced including the turbochargers in the ballpark of $13,000.

2016 Flex · 103,000 miles · Jan 2019

Driving the vehicle on the highway and heard a clunk and felt a slight loss of power and control. Pulled over to check vehicle and noticed flames coming underneath the engine compartment. Car soon became engulfed and was a total loss. The origin and cause expert hired by our insurance company suspects an injector line came loose on the engine and sprayed fuel onto exhaust manifold.

2015 Flex · 27,000 miles · Jun 2017 · fire

Our 2015 Ford Flex recently died when we were driving in traffic, with no warning when we were driving with our 2 young children. The Ford Flex only has ~45K miles on it and has been serviced regularly. Turns out it is bad part (fuel pump electric module (pem)) that is recalled by Ford in the 2015 Flex. The recall was started in 2016 and our Flex died in 2018. I was told by the dealer and later by Ford service that our car is not covered because the VIN is not included in the recall. So while some 2015 Ford flexs' had this exact part covered under warranty ours was not. We had to have it towed into the dealer, san tan Ford in gilbert az, and then pay them about $400 for the repair. The dealer was great but it is not right Ford does not cover this part on our particular car since it is exactly the make, model, year and part that is covered under the warranty. …

2015 Flex · 45,000 miles · Dec 2018

The contact owns a 2014 Ford Flex. The contact stated that while her wife was driving at an undisclosed speed, she became aware that the electronic power steering was not functioning properly after the steering wheel jerked in the right direction. As a result, the driver lost control of the vehicle and collided with a dividing wall on the side of the roadway. The vehicle returned to normal functionality, but the failure became a regular occurrence. The air bags did not deploy. No warning lights were illuminated. A police report was not filed, and no injuries were reported. The vehicle was taken to an independent mechanic, who diagnosed a failure with both control arms. The vehicle was repaired, but the failure reoccurred. The vehicle was then taken to the dealer, who was able to duplicate the failure but was unable to provide a diagnosis. The vehicle was not repaired. …

2014 Flex · Delivery › Fuel pump · 138,000 miles · Mar 2024 · crash

The contact owns a 2014 Ford Flex. The contact stated that while stopped at a traffic light, the vehicle stalled. The contact attempted to restart the vehicle however, the vehicle failed to restart. There was no warning light illuminated. The vehicle was towed to the dealer where it remained. The contact was informed that the fuel pump module needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted or notified of the failure. The approximate failure mileage was 104,000.

2014 Flex · Delivery › Fuel pump · 104,000 miles · Mar 2022

The contact owns a 2013 Ford Flex. The contact stated that while her daughter was driving at an undisclosed speed; after coming to a complete stop, the accelerator pedal was depressed; however, the vehicle failed to respond as needed. The contact stated that the vehicle rolled backwards unintendedly. After depressing the accelerator pedal, the vehicle responded as designed and was safely driven to the destination. The vehicle was taken to an independent mechanic and was diagnosed with a failed fuel pump. The contact was informed that the fuel pump needed to be replaced. The dealer was contacted and made aware of the failure. The contact was informed that the vehicle was not included in NHTSA Campaign Number: 16V621000 (Fuel System, Gasoline). The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. …

2013 Flex · 158,000 miles · Oct 2023

The contact owns a 2013 Ford Flex. The contact stated that while operating the vehicle, the message "check fuel filler inlet" was displayed. The contact stated while refueling, gasoline spilled back out of the filler inlet. Additionally, while operating the vehicle, there was a strong fuel odor present inside the cabin of the vehicle. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in NHTSA Campaign Number: 15V812000 (Fuel System, Gasoline). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 222,000.

2013 Flex · 222,000 miles · May 2023

Related recalls (3)

Fuel system, gasoline › Delivery › Fuel pump

NHTSA recall 16V-621 · Aug 25, 2016 · 77,502 vehicles

Ford Motor Company (Ford) is recalling certain model year 2013-2015 Ford Taurus, Ford Flex, Lincoln MKS and Lincoln MKT vehicles equipped with 3.5L GTDI Ecoboost engines and 2013-2015 Ford Taurus Police Interceptor vehicles.

Remedy: Ford will notify owners, and dealers will inspect the fuel PEM part number and replace the fuel PEM, as necessary, free of charge. The recall began on December 1, 2016.

Fuel system, gasoline

NHTSA recall 15V-812 · Dec 2, 2015 · 868 vehicles

Ford Motor Company (Ford) is recalling certain model year 2013 Explorer, Explorer Police Utility, Taurus, Taurus Police Interceptor, Flex, Lincoln MKS, and Lincoln MKT vehicles. In the affected vehicles, the fuel delivery module may crack, allowing fuel to leak.

Remedy: Ford will notify owners, and dealers will replace the fuel delivery module, free of charge. The recall began on December 21, 2015. Owners may contact Ford customer service at 1-866-436-7332.

Fuel system, gasoline

NHTSA recall 13V-227 · May 31, 2013 · 390,783 vehicles

Ford is recalling certain model year 2013 Explorer, Taurus, Flex, Fusion, Police Interceptor Sedan and Police Interceptor Utility vehicles; and certain model year 2013 Lincoln MKS, MKT, and MKZ vehicles. In the affected vehicles, the fuel delivery module may develop a crack, allowing fuel to leak.

Remedy: Ford will notify owners, and dealers will replace the fuel delivery module, free of charge. The recall began on July 20, 2013. Owners may contact Ford Motor Company Customer Relationship Center at 1-866-436-7332.

Frequently asked questions

Which Ford Flex years have fuel system problems?

By NHTSA complaints, the 2013 (72), 2014 (50), 2009 (19), 2015 (18) and 2010 (16) model years. Fuel System complaints make up 12% of all complaints for the 2013.

Is there a recall for Ford Flex fuel system problems?

Yes — 3 recalls, including 16V-621 (fuel pump, Aug 25, 2016); 15V-812 (fuel system, gasoline, Dec 2, 2015); 13V-227 (fuel system, gasoline, May 31, 2013). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.

At what mileage do Ford Flex fuel system problems start?

Across all years, half of the complaints with a recorded mileage happened before about 66,000 miles; 28% happened before 50,000 miles.

What part fails most often?

Owners most often name the delivery › fuel pump (5 mentions).

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.