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How big is a Ford Flex gas tank?

The Ford Flex uses an 18.5-gallon gas tank (about 70 liters). This size is standard across most model years, providing a predictable fill-up pattern and driving range.


The Ford Flex was produced from 2009 through 2019 as a boxy, family-focused crossover. This article explains the official capacity, notes any year-to-year variations, and shows how the tank size translates into real-world planning for trips and daily use.


Standard capacity and how it is measured


Most Ford Flex variants share the same nominal fuel-tank capacity. The commonly cited specification is 18.5 gallons (70 liters).


Before listing the figure, it’s useful to confirm the exact capacity on your specific vehicle, which is printed on the driver's door jamb placard and documented in the owner's manual. Small discrepancies can appear in marketing data or regional reports.



  • Fuel tank capacity: 18.5 gallons (70 liters).


In short, the official capacity is 18.5 gallons (70 liters). If you’re checking a used Flex or a different market, verify against the door placard or the owner's manual for the precise figure due to rounding or regional labeling.


Consistency across model years


Ford historically reported a consistent 18.5-gallon tank for Flex models produced from 2009 to 2019. There were no widely published changes to the tank size during the model’s run, though data sources can vary slightly in rounding.


Practical implications for drivers


With a standard 18.5-gallon tank, drivers can estimate range by considering the vehicle’s fuel economy, which varies by engine, drivetrain, and driving conditions. The tank size serves as a stable basis for planning fuel stops on longer trips and for daily commuting considerations.


Summary


The Ford Flex typically carries an 18.5-gallon (70-liter) gas tank, a standard figure across model years 2009–2019. Always verify the exact capacity for your vehicle using the door placard or owner's manual, especially if you’re evaluating a used Flex. This tank size offers a dependable basis for planning fills and trips, with actual range dependent on engine choice, driving style, and conditions.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.