15 MPG combined. That’s what you can expect if you’re considering a 2015 Mercedes-Benz ML63 AMG. It’s a low number for modern fuel efficiency, but expected when you understand what this vehicle is: a 518-horsepower, hand-built AMG SUV designed for acceleration and a visceral driving experience, not hypermiling. The ML63 AMG isn’t bought by those who prioritize fuel savings; it’s purchased by individuals who demand performance and are willing to pay the price at the dealership and at the pump.

City and highway performance

The split between city and highway MPG figures reveals more about the ML63 AMG’s fuel consumption. The EPA estimates 13 MPG in the city, reflecting the engine’s thirst during stop-and-go traffic and bursts of acceleration. On the open road, the ML63 AMG manages 17 MPG. This improvement shows the engine’s efficiency, or lack of, when cruising at a steady speed. The large V8 engine, twin turbos, and the vehicle’s weight (over 5,000 pounds) means that fuel consumption will always be a major factor.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Mercedes-Benz ML63 AMG at $3,850. This figure is calculated based on driving 15,000 miles per year, with a percentage split between city and highway driving, and using the national average fuel price for premium gasoline. It’s a sobering number when compared to more fuel-efficient SUVs or the non-AMG versions of the ML-Class. Consider this cost as part of the ownership experience, a necessary expense for the performance potential of this machine. Recall that your actual fuel costs may vary depending on your driving habits and local fuel prices. Check all Mercedes Benz fuel economy data for more models.

Real-world expectations

The EPA estimates are a benchmark, but real-world fuel economy is often lower, especially in the ML63 AMG. Aggressive driving, short trips with cold engine starts, and extended idling can worsen fuel consumption. Owners who frequently use the engine’s power will likely see numbers closer to the low end of the EPA range, or below it. However, those who drive more conservatively and prioritize steady highway cruising might approach the 17 MPG highway rating. It’s safe to assume that achieving the EPA combined rating consistently will require conscious effort.

How it compares

Compared to other performance SUVs, the 2015 ML63 AMG’s fuel economy is poor. A 2015 BMW X5 M, with its 567-hp twin-turbo V8, is rated at 16 MPG combined, only slightly better. A Porsche Cayenne Turbo of the same year achieves 17 MPG combined. A Range Rover Sport Supercharged, with its 5.0-liter V8, is rated at 16 MPG combined. These comparisons show that performance costs fuel efficiency. For the ML63 AMG buyer, the similar figures between these SUVs suggest that fuel economy isn’t the primary decision-making factor. Explore ML63 MPG across all years to see how efficiency changes over time.

Tips to maximize efficiency

While the ML63 AMG is not designed for fuel sipping, owners can still take steps to improve gas mileage. Avoid aggressive acceleration and hard braking, as these habits affect fuel consumption. The engine’s twin turbos are responsive, so ease into the throttle to conserve fuel.

Proper tire inflation is important for safety and handling and for fuel efficiency. Check your tire pressures regularly and inflate them to the recommended levels. Underinflated tires increase rolling resistance, which requires the engine to work harder and consume more fuel.

Minimize idling time. Modern engines, including the AMG’s hand-built V8, consume fuel even when stationary. Avoid prolonged idling, especially in cold weather, and turn off the engine when stopped for more than a minute or two.

Service the vehicle according to the manufacturer’s recommendations. Regular maintenance, including oil changes, air filter replacements, and spark plug inspections, ensures that the engine is running optimally. A neglected engine will consume more fuel.

Consider using cruise control on the highway. Maintaining a consistent speed can help improve fuel economy by reducing unnecessary acceleration and deceleration. The ML63 AMG’s adaptive cruise control system is useful for maintaining a safe distance from other vehicles while optimizing fuel efficiency.