Ford Flex Fuel/propulsion System Problems

Source: NHTSA · Updated Oct 11, 2026 · 165 complaints analyzed

Owners have filed 165 complaints with NHTSA about fuel/propulsion system problems on the Ford Flex across 9 model years. The 2013 model year has the most (59). The words owners use most often: “fuel pump” (47% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Fuel pump: mentioned in 78 of 165 complaints (47%)
  • Control module: mentioned in 22 of 165 complaints (13%)
  • Failed start: mentioned in 13 of 165 complaints (8%)

How much does it cost to fix?

Owners who wrote down what they paid or were quoted put the typical fuel/propulsion system repair on the Ford Flex at $510, and half of them between $340 and $620.

Based on 12 NHTSA complaints about this problem alone that state a repair bill or quote (2014–2026), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.

At what mileage do fuel/propulsion system problems happen?

Based on 139 complaints that reported the odometer reading.

Under 10k miles6 · 4%
10k–25k miles6 · 4%
25k–50k miles24 · 17%
50k–75k miles53 · 38%
75k–100k miles27 · 19%
100k–150k miles20 · 14%
150k+ miles3 · 2%

How serious are the reports?

Of 165 complaints, 1 mention a crash, 1 a fire, 4 an injury.

Ford Flex fuel/propulsion system complaints by model year

Peak: 2013, with 59 complaints
2009: 152009152010: 122010122011: 5201152012: 5201252013: 592013592014: 462014462015: 182015182016: 3201632018: 220182

n = 165 complaints · Source: NHTSA

Model yearFuel/propulsion System complaintsShare of that yearMedian miles
2018 Flex23%52,525
2016 Flex33%66,000
2015 Flex1816%28,500
2014 Flex4618%62,098
2013 Flex5910%66,000
2012 Flex58%116,000
2011 Flex53%81,650
2010 Flex129%101,500
2009 Flex158%85,000

When owners reported it

Peak: 2019, with 43 complaints
2013: 4201342014: 5201452015: 9201592016: 162016162017: 262017262018: 382018382019: 432019432020: 8202082021: 3202132022: 3202232023: 5202352024: 2202422025: 1202512026: 220262

n = 165 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists fuel/propulsion system for the Ford Flex. A pattern of complaints does not always lead to a recall.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

The car is experiencing turbo failure that lines up with the recall for the same model vehicle produced within the same 2016-2017 date. But for some reason this vin isnt included in the recall

Received Aug 19, 2026 · NHTSA complaint 11757878

Hello, I was driving my Ford Flex at 60mph yesterday with my 15 year old friend helping me move. The engine completely died for several seconds and continued running. That night the engine was idling rough which was a new symptom. Today, I made it to my destination and the car died, then it did not…

Received Jul 22, 2026 · NHTSA complaint 11752265

Car lost power while driving on interstate CIL indicates P0171 P0174 codes

Received Jan 18, 2025 · NHTSA complaint 11636723

fuel pump relay module. Vehicle shut off during driving without warning forcing panic and moving to side of road and had to tow vehicle. No incident happened but after replacement no longer had issue.

Received Apr 28, 2024 · NHTSA complaint 11585712

There seems to be a fuel leak on my vehicle's fuel tank. When the tank is half full and more there is a noticable fuel smell around my car and fuel dripping under my car. When the fuel is less than half full, the fuel seems to stop leaking. I believe the seam in the gas tank is leaking. I have…

Received Jan 23, 2024 · NHTSA complaint 11567204
Ford Flex
2010 Ford Flex photographed in Upper Marlboro, Maryland , USA.. Representative photo; appearance varies by model year. Photo: IFCAR, Public domain, via Wikimedia Commons.

Frequently asked questions

Do all Ford Flexs have fuel/propulsion system problems?

No. NHTSA has 165 owner complaints about fuel/propulsion system for the Ford Flex. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the Ford Flex fuel/propulsion system?

No recall currently lists fuel/propulsion system for this vehicle.

How much does it cost to fix fuel/propulsion system problems on the Ford Flex?

Owners report a typical cost of $510 (half paid between $340 and $620), from 12 complaints that state a repair bill or quote, in 2026 dollars.

What do owners say about fuel/propulsion system problems on the Ford Flex?

The most frequent phrase is “fuel pump”, in 78 of 165 complaints, followed by “control module” (22).

Other Ford Flex problems

See all Ford Flex problems.