Photo: Wikimedia Commons (CC)
Power
Combined, EPA 2019
What owners say
Our take, from owner reports
Mixed to highly positive among owners, with sentiment heavily dependent on powertrain choice and awareness of a critical, well-known mechanical flaw.
8 problems reported (2 very frequent, 4 recurrent, 2 isolated) · high confidence
Problems owners report
- Very frequentInternal water pump failure
Design flaw where the pump is located inside the engine timing cover; failure can leak coolant into the oil pan, leading to catastrophic engine seizure without obvious external leaks. Described as an inevitable issue.
- Very frequentPoor fuel economy
Real-world combined mileage reported between 16-20 MPG, with a small fuel tank leading to frequent fill-ups. A primary reason owners seek to replace the vehicle.
- RecurrentRust and corrosion
Significant rust issues reported, particularly on door tops under weather stripping, rear hatch seams, and exhaust components (e.g., "flex pipe").
+ 5 more issuesShow fewer
- RecurrentTurbocharger reliability concerns (EcoBoost only)
Concerns about turbocharger lifespan, with replacements cited in the $2,500 range; described as a "when, not if" failure point, often with one turbo failing soon after the other.
- RecurrentSuspension and hub wear
Premature wear of wheel hubs and front struts, potentially accelerated by the vehicle's weight or aftermarket modifications.
- RecurrentThird-row cargo space limitation
Cargo space behind the raised third row is notably small, less than most minivans and SUVs, often necessitating a roof box for family trips.
- IsolatedBlend door actuator failure
Clicking or failure of HVAC temperature blend door actuators, a common nuisance repair.
- IsolatedPTU (Power Transfer Unit) fluid maintenance
Requires regular fluid changes on AWD models, often overlooked, leading to potential failure.
The version owners recommend
Limited trim with EcoBoost engine and AWD. The Limited trim is associated with premium features like leather, rear climate control, and advanced technology. The EcoBoost engine is strongly recommended by enthusiasts for its transformative power, though with acknowledged added complexity and potential turbocharger concerns. AWD is frequently recommended for improved traction, resale value, and a higher tow rating (4,500 lbs vs. 2,000 lbs for FWD).
Competitors to consider
Owners compare it most often with the Honda Pilot, Toyota Sienna, Honda Odyssey, Ford Explorer and Kia Telluride.
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Overall sentiment
Mixed to highly positive among owners, with sentiment heavily dependent on powertrain choice and awareness of a critical, well-known mechanical flaw. Owners express deep affection for the vehicle's unique boxy styling, exceptional passenger comfort across three rows, versatile cargo space, and car-like driving dynamics that avoid the bulkiness of traditional SUVs. The EcoBoost turbocharged V6 engine is frequently praised for strong, satisfying acceleration, making the vehicle a "rocket" or "sleeper." However, this enthusiasm is tempered by a very frequent and severe criticism: the failure-prone internal water pump design on the 3.5L V6 engines (both naturally aspirated and EcoBoost), which can lead to catastrophic engine failure and is described as a matter of "when, not if." Fuel economy is consistently criticized as poor (16-20 MPG combined is typical), exacerbated by a small fuel tank, making it a primary reason owners seek replacements. Long-term reliability outside of the water pump issue receives mixed reports, with some owners reporting trouble-free high mileage and others citing significant rust and repair costs.
Positioning vs competitors
Positioned as a stylish, lower-riding alternative to minivans and three-row SUVs, offering superior interior space and comfort for adults compared to many SUV competitors. Frequently described as a "boxy minivan with swing doors" that appeals to buyers wanting practicality without the minivan stigma. The Honda Pilot is noted as more reliable but with lower owner satisfaction and a higher price. The Toyota Sienna is viewed as the ultimate reliable "appliance" but less stylish. Compared to the Ford Explorer, the Flex is noted for more car-like handling, easier ingress/egress due to its shape, but less ground clearance. The consensus is that the Flex trades some long-term reliability (specifically regarding the water pump) for unique style, excellent interior packaging, and, with the EcoBoost, surprising performance.
Recommended configurations
AWD over FWD for traction, towing capacity, and resale. EcoBoost engine for performance, with the strong caveat to install an oil catch can to mitigate carbon buildup on intake valves and to budget for eventual turbocharger replacement. A backup camera is highly recommended due to visibility limitations. Checking for the factory tow package is advised for its upgraded cooling components. For high-mileage examples, a pre-purchase inspection focusing on the water pump weep hole for coolant leaks is considered essential. An extended warranty that specifically covers the water pump and internal engine components is strongly recommended by multiple owners.
General recommendations
Suitable for families needing comfortable, spacious transportation for up to seven adults, who prioritize interior room and unique style over maximum fuel economy and who are willing to proactively manage a known major mechanical risk. Ideal for road trips due to its smooth, comfortable highway ride. NOT recommended for buyers unwilling to budget for a potential $2,000-$9,000 water pump/engine repair. NOT recommended for those with long commutes or high annual mileage due to poor fuel economy and small tank. Essential to verify maintenance history and check for coolant leaks at the water pump weep hole. For models with the MyFord Touch infotainment system (pre-2013), be prepared for potential system frustrations; Sync 3 (2016+) is preferred. Negotiate purchase price aggressively, especially on used models, to offset potential future repair costs. If purchasing used, prioritize finding a model with a recently replaced water pump and timing components.
Remarks
The water pump issue is the dominant topic in owner discussions, with references to a class-action lawsuit and repair costs ranging from preventative replacement (~$2,000) to complete engine replacement ($9,000+). Owner satisfaction is bifurcated: those who have experienced the failure express strong caution, while those who proactively maintain or have been fortunate report extreme loyalty. The 2013 model year introduced a mid-cycle refresh with updated styling and technology. The vehicle was discontinued after the 2019 model year. Analysis based on approximately 35 substantive owner discussions spanning model years 2009-2019.
Generation by generation
Owner insights per generation and US complaint/recall records (NHTSA).
Complaints and recalls by model yearWorst year: 2013. Years to avoid: 2019, 2013Source: NHTSA (US)Show table
Each year graded against the model's other years: Year Score. See all Ford Flex years to avoid
| Year | Complaints | Recalls | Most-reported area |
|---|---|---|---|
| 2019 | 249 | 4 | back over prevention |
| 2018 | 67 | 3 | unknown or other |
| 2017 | 42 | 4 | unknown or other |
| 2016 | 98 | 3 | back over prevention |
| 2015 | 110 | 4 | back over prevention |
| 2014 | 249 | 4 | steering |
| 2013 | 579 | 6 | electrical system |
| 2012 | 64 | 2 | steering |
| 2011 | 144 | 2 | steering |
| 2010 | 139 | 1 | steering |
| 2009 | 181 | 1 | engine |
Complaint counts come from owner reports filed with the US National Highway Traffic Safety Administration. Higher-selling years naturally accumulate more complaints.
Recall notices34 on record · Source: NHTSA (US)Show recalls
2019 · electrical system:alternator/generator/regulatorcampaign 18V548000
Ford Motor Company (Ford) is recalling certain 2018 Ford Edge, Lincoln MKX, 2019 Ford Flex, and Lincoln MKT vehicles. The power supply cables at the starter and the alternator may not have been properly secured, possibly resulting in an electrical arc.
2019 · back over prevention: sensing system: cameracampaign 24V951000
Ford Motor Company (Ford) is recalling certain 2019 Flex, Fiesta, and Lincoln MKT vehicles. The rearview camera may intermittently display a blank or distorted image.
2019 · back over prevention: sensing system: cameracampaign 25V695000
Ford Motor Company (Ford) is recalling certain 2015-2019 Flex, 2015 Explorer, Lincoln MKT, Lincoln MKZ, 2015-2016 C-Max, Escape, Taurus, 2016 Fusion, 2018-2019 Taurus, 2019 Lincoln MKT, Fiesta, and 2020 Mustang vehicles. The rearview camera may display a distorted, intermittent, or blank image when the vehicle is in reverse.
2019 · structure:bodycampaign 25V732000
Ford Motor Company (Ford) is recalling certain 2017-2019 Flex vehicles. The driver and front passenger B-Pillar door trim may detach while driving.
2018 · suspension:rearcampaign 20V072000
Ford Motor Company (Ford) is recalling certain 2013-2018 Lincoln MKT and Ford Flex and Taurus vehicles with the Police Interceptor or SHO Performance Pack. The rear suspension toe links may fracture due to stress on the rear suspension.
2018 · back over prevention: sensing system: cameracampaign 25V695000
Ford Motor Company (Ford) is recalling certain 2015-2019 Flex, 2015 Explorer, Lincoln MKT, Lincoln MKZ, 2015-2016 C-Max, Escape, Taurus, 2016 Fusion, 2018-2019 Taurus, 2019 Lincoln MKT, Fiesta, and 2020 Mustang vehicles. The rearview camera may display a distorted, intermittent, or blank image when the vehicle is in reverse.
2018 · structure:bodycampaign 25V732000
Ford Motor Company (Ford) is recalling certain 2017-2019 Flex vehicles. The driver and front passenger B-Pillar door trim may detach while driving.
2017 · suspension:rearcampaign 20V072000
Ford Motor Company (Ford) is recalling certain 2013-2018 Lincoln MKT and Ford Flex and Taurus vehicles with the Police Interceptor or SHO Performance Pack. The rear suspension toe links may fracture due to stress on the rear suspension.
2017 · engine and engine cooling:engine:gasoline:turbo/superchargercampaign 16V925000
Ford Motor Company (Ford) is recalling certain model year 2016 Ford Taurus, 2016-2017 Ford Flex, Lincoln MKT, 2017 Ford Explorer and Ford Explorer Police Interceptor Utility vehicles equipped with 3.5L GTDI engines. Improperly brazed turbocharger oil supply tubes may leak oil on engine components.
2017 · back over prevention: sensing system: cameracampaign 25V695000
Ford Motor Company (Ford) is recalling certain 2015-2019 Flex, 2015 Explorer, Lincoln MKT, Lincoln MKZ, 2015-2016 C-Max, Escape, Taurus, 2016 Fusion, 2018-2019 Taurus, 2019 Lincoln MKT, Fiesta, and 2020 Mustang vehicles. The rearview camera may display a distorted, intermittent, or blank image when the vehicle is in reverse.
2017 · structure:bodycampaign 25V732000
Ford Motor Company (Ford) is recalling certain 2017-2019 Flex vehicles. The driver and front passenger B-Pillar door trim may detach while driving.
2016 · engine and engine cooling:engine:gasoline:turbo/superchargercampaign 16V925000
Ford Motor Company (Ford) is recalling certain model year 2016 Ford Taurus, 2016-2017 Ford Flex, Lincoln MKT, 2017 Ford Explorer and Ford Explorer Police Interceptor Utility vehicles equipped with 3.5L GTDI engines. Improperly brazed turbocharger oil supply tubes may leak oil on engine components.
2016 · suspension:rearcampaign 20V072000
Ford Motor Company (Ford) is recalling certain 2013-2018 Lincoln MKT and Ford Flex and Taurus vehicles with the Police Interceptor or SHO Performance Pack. The rear suspension toe links may fracture due to stress on the rear suspension.
2016 · back over prevention: sensing system: cameracampaign 25V695000
Ford Motor Company (Ford) is recalling certain 2015-2019 Flex, 2015 Explorer, Lincoln MKT, Lincoln MKZ, 2015-2016 C-Max, Escape, Taurus, 2016 Fusion, 2018-2019 Taurus, 2019 Lincoln MKT, Fiesta, and 2020 Mustang vehicles. The rearview camera may display a distorted, intermittent, or blank image when the vehicle is in reverse.
2015 · fuel system, gasoline:delivery:fuel pumpcampaign 16V621000
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. A component within the fuel pump electric module (PEM) may overheat causing a loss of electrical power to the fuel pump.
19 older recalls not shown. Check nhtsa.gov with your VIN for the full history.
Specifications
3.5 V6
3.5L 6-cylinder · 364 hp · AWD · automatic
Built 2013–2019