18 MPG combined. Let’s be honest, that’s not why anyone buys a 2023 Ford Mustang Mach 1 with the 5.0L V8. This isn’t about squeezing every last mile out of a gallon; it’s about experiencing a visceral connection to a powerful, naturally aspirated engine. Mach 1 buyers want old-school Mustang character blended with modern performance, and they are fully aware of the fuel consumption trade-offs inherent in that choice. It’s the price of admission to a unique blend of track-ready capability and daily-drivable fun.

City and highway performance

The EPA estimates 15 MPG in the city and 23 MPG on the highway for the automatic-equipped Mach 1. The manual transmission version shows slightly less efficiency, which shows why this performance model can still achieve such numbers. In city driving, the thirsty 5.0L V8 is constantly working against stop-and-go traffic, heavy throttle inputs, and extended idling. The relatively low gearing in the transmission doesn’t help either. However, on the open road, where the engine can settle into a more efficient cruising speed, the Mach 1 can achieve those highway estimates, provided you resist the urge to dip into the throttle every few miles. The S10 automatic transmission features more closely spaced gears than previous generations, enhancing acceleration, yet also providing smoother shifts on the highway.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Ford Mustang Mach 1 at $2,450. This calculation is based on the EPA’s assumption of 15,000 miles driven per year, using national average fuel prices. Of course, your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and the fluctuating prices at the pump. Those with heavy traffic commutes or an enthusiastic right foot should expect to exceed this figure. You can view MUSTANG MPG across all years to get a different perspective.

Real-world expectations

While the EPA provides a standardized testing methodology, real-world fuel economy depends heavily on driving style and conditions. Mach 1 ownership often involves spirited driving, track days, and weekend cruises, all of which drastically lower fuel efficiency compared to the EPA test cycle. Owners who prioritize smooth acceleration, consistent speeds, and minimal idling will stay closer to the EPA estimates, but that’s not why people buy a Mach 1. Most drivers will see a combined MPG figure closer to the low teens if they really press the car. You can review all Ford fuel economy data to compare against other vehicles.

How it compares

When considering alternatives, the fuel economy picture becomes clearer. The Chevrolet Camaro SS with the 6.2L V8 is rated at 16 MPG combined with an automatic transmission, making it slightly less efficient. The Dodge Challenger R/T Scat Pack with the 6.4L Hemi V8 manages around 18 MPG combined, similar numbers, though with a bigger, less high-strung engine. The BMW M240i, although not a direct competitor in terms of character, offers significantly better fuel economy at 26 MPG combined, thanks to its turbocharged inline-six engine and lighter curb weight, but lacks that raw V8 punch. These comparisons highlight the trade-off inherent in choosing a high-performance V8 muscle car like the Mach 1.

Tips to maximize efficiency

Resist the urge to constantly explore the upper reaches of the Mach 1’s tachometer. The 5.0L V8 is inherently responsive, and it’s easy to get caught up in the exhilarating acceleration, but disciplined throttle control will noticeably improve fuel consumption. Maintaining a steady speed and avoiding sudden braking are key.

Consider the fuel grade you are using. While the Mach 1 can technically run on regular unleaded fuel, it is designed to perform optimally with premium fuel. Using premium fuel, as Ford recommends, not only ensures peak performance, but may also contribute to slightly improved fuel economy by allowing the engine to run more efficiently, especially under heavy load.

Ensure your tires are properly inflated. 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 specified on the doorjamb sticker. This is a simple step that can make a noticeable difference.

Minimize idling time. Letting the engine idle for extended periods, especially in stop-and-go traffic or while waiting, wastes fuel. If you anticipate being stationary for more than a minute or two, it’s more efficient to turn off the engine and restart it when you’re ready to go.