The 2019 Ford Flex remains a unique proposition in the automotive market, blending the utility of a three-row SUV with the unconventional, boxy aesthetics of a wagon. Evaluated through the lens of its final production era, the 2019 model offers a refined cabin, substantial interior volume, and a choice between naturally aspirated and turbocharged powertrains, making it a compelling, albeit aging, choice for families prioritizing comfort and cargo capacity over modern technological integration.
Historical Context and Market Position
By 2019, the Ford Flex was nearing the end of its life cycle. Having launched in 2009, the vehicle stood as a distinct outlier in Ford's lineup. While the rest of the automotive industry pivoted toward aggressive, aerodynamic SUV styling, the Flex maintained its "breadbox" silhouette, which prioritized interior headroom and ease of ingress.
Positioned between the smaller Ford Explorer and the larger Expedition, the 2019 Flex occupied a niche segment that appealed to buyers who disliked the high step-in height of traditional body-on-frame SUVs. It was engineered on the D4 platform, sharing components with the Lincoln MKT, and by 2019, it had become a cult classic for those who appreciated its boxy design and utilitarian flexibility.
Powertrain Specifications and Driving Dynamics
The 2019 Ford Flex offered two distinct engine configurations, which significantly altered the driving character of the vehicle.
The Standard 3.5L Ti-VCT V6
The base engine, standard on the SE, SEL, and Limited trims, is a 3.5-liter naturally aspirated V6 producing 287 horsepower and 254 lb-ft of torque. This engine is mated to a six-speed SelectShift automatic transmission. In real-world driving, this powertrain is adequate for daily commuting and highway cruising. However, because the Flex is a heavy vehicle—weighing in excess of 4,500 pounds in some configurations—the base V6 can feel taxed during high-speed passing or when carrying a full load of passengers and cargo.
The 3.5L EcoBoost V6
Available exclusively on the Limited trim, the 3.5-liter EcoBoost twin-turbocharged V6 is the highlight of the performance lineup. Producing 365 horsepower and 350 lb-ft of torque, this engine transforms the Flex into a surprisingly quick crossover. The added torque makes it much better suited for towing (when properly equipped) and mountainous driving. It provides a more confident experience, though it demands a higher premium at the fuel pump and requires more diligent maintenance regarding its turbocharging components.
Interior Design, Comfort, and Utility
The primary reason buyers choose the Ford Flex is its interior layout. Unlike many modern mid-size SUVs that sacrifice third-row space for styling, the Flex uses its boxy shape to provide genuine adult-sized comfort in the third row.
Cargo and Seating Versatility
The cabin is configured to accommodate seven passengers, or six if the optional second-row captain’s chairs are selected. The second and third rows fold nearly flat into the floor, creating a cavernous cargo area. The low load floor—a result of the vehicle’s station wagon heritage—makes loading heavy or bulky items significantly easier than in an equivalent Ford Explorer of the same year.
Infotainment and Cabin Technology
The 2019 model features the SYNC 3 infotainment system, which was highly regarded in its time for its responsiveness and straightforward interface. It includes Apple CarPlay and Android Auto compatibility as standard, which helps keep the vehicle feeling relevant even by 2026 standards. However, the instrument cluster and interior buttons show their age, featuring a blend of analog gauges and hard plastic surfaces that may feel dated compared to newer, screen-heavy dashboard designs.
Safety and Reliability Considerations
For buyers evaluating a used 2019 Ford Flex today, safety and long-term reliability are paramount.
Safety Suite
The 2019 Flex was equipped with the Ford Safe and Smart Package on higher trims. This included:
- Adaptive Cruise Control
- Forward Collision Warning with Brake Support
- Blind Spot Information System (BLIS) with Cross-Traffic Alert
- Lane-Keeping System
- Rain-sensing wipers
While not as comprehensive as the advanced driver-assistance systems (ADAS) found in 2026 model-year vehicles, these features provided a robust layer of protection that is still relevant for modern driving conditions.
Reliability Notes
The D4 platform is generally considered stable. The 3.5L naturally aspirated V6 is well-regarded for its longevity if oil changes are performed at recommended intervals. Prospective buyers should be aware of a few known issues:
- Water Pump Wear: On the 3.5L engines, the water pump is internally mounted and driven by the timing chain. Failure can be expensive to repair because it requires significant labor to access.
- PTU (Power Transfer Unit) Maintenance: For All-Wheel Drive (AWD) models, the PTU fluid can degrade over time due to heat. Regular fluid changes are strongly recommended to prevent premature failure.
- Electrical Gremlins: As with many Ford vehicles of this era, occasional issues with the SYNC modules or power liftgate sensors can occur, though these are typically minor in nature.
Comparison Table: 2019 Ford Flex Trim Highlights
| Feature | SE Trim | SEL Trim | Limited Trim |
|---|---|---|---|
| Engine | 3.5L V6 | 3.5L V6 | 3.5L V6 or 3.5L EcoBoost |
| Drivetrain | FWD | FWD / AWD | FWD / AWD |
| Seating | 7 Passengers | 7 Passengers | 6 or 7 Passengers |
| Infotainment | SYNC 3 (4.2" screen) | SYNC 3 (8" screen) | SYNC 3 w/ Navigation |
| Key Advantage | Entry price | Best value | Performance & Luxury |
Practical Performance and Ownership Costs
Owning a 2019 Ford Flex requires accounting for its fuel appetite. The vehicle was never marketed for its efficiency; the naturally aspirated engine typically returns 16-18 MPG in mixed driving, while the EcoBoost version often dips into the low teens under heavy acceleration.
Maintenance costs are reasonable, as parts are widely available through Ford’s extensive supply chain. Because the Flex shares many mechanical components with the Taurus and Explorer, sourcing common wear-and-tear items—such as suspension bushings, brakes, and sensors—remains straightforward for independent mechanics.
Common Questions About the 2019 Ford Flex
Does the 2019 Ford Flex have a reliable engine?
The 3.5L V6 engine is fundamentally reliable, but it requires diligent maintenance. The most critical item is the internal water pump. It is highly recommended to verify that the cooling system has been serviced according to the manufacturer’s schedule to avoid catastrophic failure.
Is the third row actually usable for adults?
Yes. The boxy shape of the Flex allows for significantly more headroom and legroom in the third row than many competitors. It is one of the few crossovers from 2019 that can comfortably seat adults in the back for medium-length trips.
What are the main differences between the trim levels?
The SE is the base model with essential equipment. The SEL adds comfort features like dual-zone climate control and power-adjustable seats. The Limited trim adds premium touches such as leather upholstery, an upgraded sound system, and the option for the high-performance EcoBoost engine.
Can the 2019 Ford Flex tow a trailer?
When properly equipped with the Class III Trailer Tow Package, the 2019 Flex has a maximum towing capacity of 4,500 pounds. This is sufficient for small utility trailers, boats, or light campers, making it a versatile family vehicle.
Should I choose AWD or FWD?
If you live in a region with significant snow or rain, the AWD system is a valuable asset. It provides better traction during cornering and acceleration. However, if you live in a mild climate, the FWD model is lighter and slightly more fuel-efficient, with fewer components to maintain.
Expert Recommendation for Prospective Buyers
If you are currently in the market for a 2019 Ford Flex, the best path is to prioritize the Limited trim with the naturally aspirated V6. This configuration balances luxury features—such as heated seats, improved infotainment, and advanced safety—with the long-term reliability of the non-turbocharged engine.
Before finalizing any purchase, ensure the vehicle has a documented service history, specifically confirming that the coolant has been changed periodically to protect the internal water pump. A pre-purchase inspection by a technician familiar with the D4 platform is the most effective way to identify potential issues with the PTU or steering rack. The 2019 Ford Flex remains a practical, comfortable, and distinct choice for families who prioritize utility over the current trend of sloped-roof crossovers.
