A combined fuel economy rating of 23 MPG means the 2023 Ford Mustang Convertible with the 2.3L EcoBoost engine won’t win any fuel efficiency contests, but that’s perfectly acceptable for its intended purpose: open-air cruising and spirited driving. This isn’t a vehicle purchased out of pure necessity; it’s a lifestyle choice, and its fuel consumption reflects that.

City and highway performance

The EPA estimates for the 2023 Mustang Convertible 2.3L are 20 MPG in city driving and 28 MPG on the highway. The lower city figure is unsurprising given the stop-and-go nature of urban environments and the temptation to tap the Mustang’s strong low-end torque at every green light. The highway figure offers a more realistic view of what’s attainable on longer journeys, where maintaining a steady speed is possible. However, even on the highway, the Mustang’s aerodynamics (or lack thereof compared to a sedan) will impact fuel consumption at higher speeds. Reaching that 28 MPG will require conscious effort and a light foot.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Ford Mustang Convertible 2.3L at $1,900. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that this is just an estimate, and your actual fuel costs will vary depending on your driving habits, the type of fuel you use (regular unleaded is recommended), and fluctuating fuel prices. If you have a heavy foot, expect to surpass the $1,900 figure. Someone who primarily uses it for weekend pleasure cruises might fall well below it. It is a good idea to explore all Ford fuel economy data when making your car purchase decision.

Real-world expectations

While the EPA ratings provide a benchmark, real-world MPG for the 2023 Mustang Convertible 2.3L will vary significantly. Spirited driving, frequent acceleration, and leaving the top down, all part of the Mustang convertible experience, will inevitably decrease fuel economy. Conversely, smooth, conservative driving, keeping tires properly inflated, and avoiding excessive idling can help drivers get close to, or even slightly exceed, the EPA estimates. The EPA numbers are a best-case scenario achievable under ideal conditions.

How it compares

Compared to other sporty convertibles, the Mustang 2.3L falls into a reasonably competitive fuel economy bracket. The Mazda MX-5 Miata, known for its lightweight design, achieves a significantly better 29 MPG combined, making it the clear efficiency leader in this class. However, the Miata sacrifices cargo space and rear seating. The BMW Z4 sDrive30i, while offering a more luxurious experience, manages around 26 MPG combined, a notable improvement. The Nissan Z offers similar horsepower, but it is not available as a convertible, and it is rated at 22 MPG combined, putting the Mustang in a favorable light. Prospective buyers must weigh their desire for open-air motoring, performance, and luxury against fuel efficiency considerations when making a decision. Review MUSTANG MPG across all years to help with this part of the process.

Tips to maximize efficiency

The 2.3L EcoBoost engine responds well to smooth acceleration and consistent speeds. Avoid aggressive throttle inputs, especially when starting from a standstill, as this wastes fuel unnecessarily. Anticipate traffic flow to minimize braking and maintain momentum whenever possible.

Tire pressure plays a critical role in fuel efficiency. Check your tire pressure regularly and inflate them to the recommended level (usually found on a sticker inside the driver’s side doorjamb). Underinflated tires increase rolling resistance, which reduces fuel economy. A simple tire pressure check can make a noticeable difference.

Reduce aerodynamic drag. Driving with the top down is part of the convertible experience, but understand that it negatively impacts fuel economy, particularly at highway speeds. For long highway stretches where fuel conservation is a priority, consider putting the top up.

Avoid unnecessary idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling wastes fuel. This is especially important in urban environments where drivers often encounter prolonged stops at traffic lights.

Use cruise control judiciously. On relatively flat highways, cruise control can help maintain a consistent speed and improve fuel economy. However, on hilly terrain, it can sometimes lead to more aggressive throttle adjustments, negating any potential fuel savings. Be mindful of the terrain and adjust your driving accordingly.