24 MPG combined won’t win any hypermiling contests, but for the 2015 Ford Mustang Convertible with the 2.3L EcoBoost engine, it’s a surprisingly sensible side to an otherwise flamboyant pony car. It’s about enjoying open-top thrills without feeling utterly guilty at the pump. This Mustang appeals to someone who wants classic Americana, a sporty image, and the joy of top-down cruising, but with everyday usability. Fuel economy is a consideration, but not the main factor.

City and highway performance

The EPA estimates of 20 MPG in the city and 29 MPG on the highway show the 2015 Ford Mustang Convertible 2.3L’s fuel consumption. The 20 MPG figure suggests that stop-and-go traffic is where the EcoBoost engine’s efficiency suffers most, as is typical of turbocharged engines. However, the 29 MPG rating on the highway shows that it can deliver respectable fuel economy when cruising at a consistent speed. The automatic transmission helps optimize engine efficiency across varied driving conditions.

Annual fuel cost

The EPA estimates an annual fuel cost of $1,800 for the 2015 Ford Mustang Convertible 2.3L. This estimate is based on driving 15,000 miles per year and using national average fuel prices. Individual spending will vary based on driving habits and gasoline prices in their area. Still, $1,800 per year gives potential buyers a good benchmark for budgeting. For those covering fewer miles than the EPA estimate, this figure will be lower.

Real-world expectations

While the EPA estimates provide a useful baseline, it’s important to consider real-world driving conditions. Achieving the advertised 29 MPG on the highway requires maintaining a steady speed and avoiding aggressive acceleration. In mixed driving conditions, expect figures closer to the combined 24 MPG rating, or perhaps slightly lower with a heavy foot. The joy of driving a Mustang convertible often encourages spirited driving, a factor that will impact observed fuel economy. Someone who prioritizes fuel savings over performance can expect numbers closer to the EPA estimate, while others will trade efficiency for enjoyment.

How it compares

The 2015 Ford Mustang Convertible 2.3L is in a niche of sporty convertibles where fuel economy varies. A MINI Cooper Convertible achieves around 27 MPG combined, presenting a more fuel-efficient open-top option, but lacks the Mustang’s iconic image and power. The V6-powered Chevrolet Camaro Convertible, rated at around 22 MPG combined, has a more powerful engine at the expense of fuel efficiency. Even within the Mustang lineup, exploring MUSTANG MPG across all years shows that models with larger engines offer less appealing fuel economy figures.

Someone prioritizing fuel economy might consider a Mazda MX-5 Miata, which can achieve close to 30 MPG combined. However, the Mustang offers more passenger and cargo space, along with a distinctly different driving experience. Someone interested in all Ford fuel economy data can compare this model against a broad range of vehicles.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The 2.3L EcoBoost engine delivers ample power, but using it liberally will impact fuel consumption. Feather the throttle and anticipate traffic flow for smoother, more efficient driving.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels, usually found on a sticker inside the driver’s side door.

Minimize idling. Excessive idling wastes fuel and contributes to emissions. If you anticipate being stopped for more than a minute, turn off the engine. This simple step can improve your overall fuel economy.

Use cruise control on the highway. Maintaining a consistent speed on the highway helps the engine operate efficiently. Cruise control minimizes unnecessary acceleration and deceleration, leading to better fuel economy, especially on long journeys.

Keep up with regular maintenance. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug replacements. A healthy engine is a fuel-efficient engine.