23 MPG combined is a respectable figure for the 2017 Ford Mustang Convertible 2.3L 4-cyl, but it’s crucial to understand why someone buys this car. It’s not for the best efficiency, it’s for the open-air experience, the iconic Mustang heritage, and a bit of American muscle accessible to a wider audience. These buyers are trading fuel savings for wind-in-your-hair thrills and the unmistakable Mustang vibe.

City and highway performance

The EPA estimates for the 2017 Mustang Convertible 2.3L place city driving at 20 MPG and highway cruising at 28 MPG. The urban number reflects the stop-and-go nature of city commutes, where the engine works harder and spends more time idling. The highway figure is more appealing, suggesting the Mustang can be a reasonable road trip companion, especially with the top down on a sunny day. The automatic transmission, coded as S6, contributes to these figures by optimizing gear ratios for different driving conditions. These numbers assume a responsible driver, not someone constantly engaging in spirited acceleration.

Annual fuel cost

The EPA estimates an annual fuel cost of $1,900 for the 2017 Ford Mustang Convertible 2.3L. This figure is based on driving 15,000 miles per year and using national average fuel prices. This will fluctuate depending on local gas prices and your specific driving habits.

If you drive significantly more than 15,000 miles annually or have a lead foot, expect this number to climb. If you drive fewer miles and practice fuel-efficient driving techniques, you could potentially spend less. $1,900 is the official benchmark for a standardized comparison.

Real-world expectations

While the EPA provides a standardized benchmark, real-world MPG often differs. Factors like driving style, traffic conditions, and even the tire pressure can impact fuel economy. Expect that the 23 MPG combined number is more of an optimistic target than a guarantee.

If you frequently drive in congested environments or enjoy aggressive acceleration, you’ll likely see numbers closer to the city rating, maybe even lower. On long highway drives, especially when using cruise control, you stand a better chance of hitting or even slightly exceeding the 28 MPG highway rating. Consider this an average across varying conditions, but your mileage may vary, as the saying goes.

How it compares

Compared to other sporty convertibles, the 2017 Mustang 2.3L fares reasonably well. A comparable Chevrolet Camaro Convertible with the 2.0L turbo engine achieves around 25 MPG combined, a slight edge. However, if you step up to the Camaro’s V6, the fuel economy drops significantly. A Mazda MX-5 Miata, known for its lightweight design and nimble handling, boasts superior fuel economy, often exceeding 30 MPG combined, but it is a much smaller car, and some would argue less iconic than the Mustang. Those prioritizing raw horsepower over efficiency might consider a Mustang GT Convertible, but its fuel consumption will be substantially worse. For those interested in additional vehicles of the Ford brand, you can access all Ford fuel economy data. Understanding these MPG variations across trims and competitors is important in deciding if this Mustang is suitable for your needs. You can also review MUSTANG MPG across all years to inform your purchasing decision.

Tips to Maximize Efficiency

Consistent and smooth acceleration is key to squeezing more miles out of each gallon. Avoid abrupt starts and stops, as these actions dramatically increase fuel consumption. Gentle acceleration allows the turbocharger to spool up more efficiently, minimizing fuel wasted during those initial bursts.

Maintain proper tire inflation. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels listed on the doorjamb sticker.

Reduce excess weight. Carrying unnecessary items in the trunk or passenger compartment adds extra load to the vehicle adds extra load, decreasing fuel economy. Remove anything you don’t need for daily driving to lighten the load.

Use cruise control on the highway. Maintaining a steady speed minimizes fluctuations in fuel consumption. Cruise control helps prevent unintentional speeding and ensures a more consistent pace, improving MPG.

Be mindful of top-down driving. While the convertible experience is undeniably enjoyable, driving with the top down at higher speeds can significantly increase aerodynamic drag, hurting fuel economy. Balance the enjoyment of open-air cruising with the impact on MPG, especially on longer trips.