17 MPG combined is what you get with the 2020 BMW M8 Gran Coupe 4.4L. Let’s be clear: nobody considering this car is prioritizing fuel efficiency above all else. This isn’t a commuter appliance; it’s a statement, a four-door coupe that prioritizes ferocious performance and undeniable presence over using less gas. This car exists to deliver exhilarating straight-line speed and surprisingly agile handling, things for which its owners are willing to pay, both at the dealership and at the pump.

City and highway performance

The EPA estimates for the M8 Gran Coupe are 15 MPG in the city and 21 MPG on the highway. These numbers show a car that’s happiest stretching its legs on the open road. Stop-and-go traffic exposes the thirst of the twin-turbocharged V8, while longer, less interrupted journeys allow it to settle into a more economical rhythm. In reality, many owners will likely see numbers slightly below these, especially those who frequently use the engine’s considerable reserves of power. But again, that’s by design. This car is not about hypermiling; it’s about unleashing controlled fury.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 BMW M8 Gran Coupe at exactly $3,400. This figure is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway. It also assumes the use of premium fuel, which is a requirement for optimal performance in this engine. Remember that your individual fuel costs could vary significantly depending on your driving habits, local fuel prices, and the actual number of miles you drive each year. But for the average driver, $3,400 gives a realistic picture of what it costs to keep this beast fed.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy can change. Aggressive driving, frequent short trips, and even factors like tire pressure and weather conditions can impact the numbers. Expect to see closer to the city figure if your daily commute is mostly urban congestion. Highway numbers might exceed the EPA estimate on long road trips where a steady speed can be maintained. But it’s safe to say that achieving consistently better fuel economy than the EPA estimates will require conscious effort and a light foot, which, admittedly, goes against the very nature of this car.

How it compares

The M8 Gran Coupe occupies a unique space, blurring the lines between sports car and luxury sedan. The Mercedes-AMG GT 63 S 4-Door Coupe, a direct competitor, achieves similar numbers, hovering around 15 MPG city and 21 MPG highway. A Porsche Panamera Turbo S might manage marginally better highway fuel economy, perhaps around 23 MPG, but its city MPG will likely mirror the M8. Even the considerably more pedestrian BMW M5 Competition, while boasting a slightly more practical demeanor, only manages around 17 MPG city and 24 MPG highway, illustrating that high-performance engineering often leads to similar consumption figures within a shared product ecosystem. See all Bmw fuel economy data here.

Tips to maximize efficiency

While squeezing every last mile out of a gallon might not be top of mind for M8 Gran Coupe owners, there are still steps to take. Gentle acceleration makes a difference. This car has immense power readily available, but using only what’s needed for the situation will conserve fuel.

Use the car’s driving modes. Select “Comfort” or “Eco Pro” mode when simply cruising. These modes adjust throttle response and transmission mapping to prioritize efficiency over outright performance. However, don’t be afraid to engage “Sport” or “Sport Plus” when the occasion calls for it, this car was built to be driven with passion. Considering the M8 MPG across all years it’s possible to find a vehicle that will meet your personal fuel requirements.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, leading to reduced fuel economy. Check your tire pressures regularly and maintain them at the recommended levels specified on the door jamb sticker.

Avoid extended idling. Modern engines are designed to be more efficient when running than when idling. If you’re going to be stopped for more than a minute or two, it’s better to turn off the engine.

Consider the weight you’re carrying. Excessive cargo adds weight, increasing fuel consumption. Remove any unnecessary items from the trunk and rear seats to reduce the load on the engine.