19 MPG combined isn’t going to win the 2017 Ford Flex FWD 3.5L any fuel-sipping awards, but it’s a reasonable compromise for buyers who want space, distinctive style, and a wagon-esque driving experience over outright efficiency. This isn’t a vehicle purchased for maximizing gas mileage; it’s chosen for hauling families, band equipment, or cross-country road trip gear in a way that minivans can’t match in terms of looks. The Flex buyer understands this trade-off. They need the space, they appreciate the retro style, and they’re willing to pay a bit more at the pump.

City and highway performance

The EPA estimates 16 MPG in the city and 23 MPG on the highway for this Flex. The city figure reflects stop-and-go traffic and the toll it takes on a vehicle of this size and weight. The 3.5L V6, while reliable, needs to work to get the Flex moving from a standstill. The highway MPG is better, the Flex settles into a more efficient cruising rhythm at higher speeds. A fully loaded Flex, one battling headwinds, will likely see highway fuel economy dip below the EPA estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Ford Flex FWD 3.5L at $2,300. This figure is based on driving 15,000 miles per year and using the national average fuel price when the EPA performed its calculations. Your actual fuel costs may vary depending on your driving habits, the type of driving you do (city versus highway), and the price of gasoline in your region. Aggressive driving, frequent short trips, and prolonged idling will all contribute to higher fuel expenses.

Real-world expectations

The EPA numbers offer a baseline, real-world MPG for the 2017 Ford Flex FWD 3.5L often hovers a bit below the official figures. Owners report seeing averages closer to 17-18 MPG in mixed driving conditions. Factors like tire pressure, vehicle maintenance, and the use of accessories like roof racks can also impact fuel economy. Consistently achieving the EPA’s 23 MPG highway rating requires disciplined driving habits and optimal conditions.

How it compares

Compared to other three-row SUVs of its era, the 2017 Ford Flex’s fuel economy is in the middle. The Nissan Pathfinder offered slightly better fuel economy, with a combined rating of around 22 MPG in its FWD configuration. However, the Pathfinder lacks the Flex’s boxy design and spacious interior. The Honda Pilot achieves around 21 MPG combined in its FWD trim, a popular choice. The Chevrolet Traverse sees similar gas mileage to the Flex, at approximately 18 MPG combined. Potential buyers must weigh these MPG differences against other factors like styling, features, and overall driving experience. See all Ford fuel economy data here on FuelEconomyHub.com.

Tips to maximize efficiency

The 2017 Ford Flex, while not a fuel-sipping champion, can still achieve its best possible mileage with some effort. Avoid jackrabbit starts and hard braking, these habits significantly impact fuel consumption, particularly in city driving. Smooth, consistent acceleration is key to maximizing efficiency with the Flex’s 3.5L V6 engine.

Ensure your tires are properly inflated to the recommended pressure, which can be found on a sticker inside the driver’s side doorjamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regular tire pressure checks are a simple and effective way to improve gas mileage.

Minimize the use of accessories that create aerodynamic drag, such as roof racks or cargo carriers, when they’re not needed. These add-ons increase wind resistance, reducing fuel efficiency, especially at highway speeds. If you only need the roof rack occasionally, remove it when not in use.

Regular maintenance, including oil changes, air filter replacements, and spark plug inspections, is crucial for engine performance and fuel economy. A well-maintained engine runs more efficiently, using less fuel to deliver the same level of power. Refer to your owner’s manual for the recommended maintenance schedule.

Consider checking the FLEX MPG across all years. Although the 2017 might not be the most fuel-efficient, comparing to other years can offer insights.