2018 Ford Flex
Fuel economy, running costs, emissions and safety · from U.S. EPA and NHTSA data
The 2018 Ford Flex is sold in the U.S. with gasoline power. The EPA lists 3 configurations for this model year, with combined economy from 17 to 19 MPG and an estimated annual fuel cost of $3,400 to $3,800 at 15,000 miles.
Key numbers
| Model year | 2018 |
|---|---|
| Vehicle class | Standard Sport Utility Vehicle 4WD |
| Fuel type(s) | Gasoline |
| Combined economy | 17-19 MPG |
| Best / worst combined | 19 / 17 MPG |
| Annual fuel cost | $3,400-$3,800 |
| Tailpipe CO₂ | 468-523 g/mi |
| EPA smog rating | 3-3 / 10 |
What it costs to fuel
Across its configurations, the 2018 Flex costs about $3,400 to $3,800 a year to fuel at the EPA's 15,000-mile basis, averaging roughly $3,600. Over five years that is about $18,000 in fuel alone before maintenance, insurance and depreciation — which is why the running cost, not just the price, decides what a car really costs.
Relative to an average new vehicle, this Flex configuration spends about $5,500 more on fuel over five years.
For context, the average combined economy of standard sport utility vehicle 4wd in this dataset is about 23 MPG. The Flex sits roughly 5 MPG below that mark at its midpoint, making it thirstier than average for its EPA class.
Configurations and fuel economy
| Version | Engine | Drive | Trans | Fuel | Combined | Annual fuel |
|---|---|---|---|---|---|---|
| Flex FWD | 3.5L 6-cyl | Front-Wheel | Automatic | Gasoline | 19 MPG | $3,400 |
| Flex AWD | 3.5L 6-cyl | All-Wheel | Automatic | Gasoline | 18 MPG | $3,600 |
Emissions, safety and size
The 2018 Flex records tailpipe CO₂ of 468-523 g/mi, an EPA smog rating of 3-3 out of 10. The EPA classifies it as standard sport utility vehicle 4wd.
Compare this car
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Data: U.S. EPA FuelEconomy.gov (public domain) and NHTSA SafetyRatings. Figures are EPA estimates; real-world results vary.