The 2023 BMW X6 M Competition, with its 4.4L 8-cylinder engine, gets 15 MPG combined. To be clear, this vehicle isn’t about saving gas. It’s for those who want a coupe-styled SUV with a powerful engine and extreme performance. The X6 M Competition makes a statement, and that statement is “I want a fast, luxurious, and visually aggressive SUV, and I’m willing to pay the price at the pump.” This car prioritizes power, prestige, and presence.

City and highway performance

The EPA estimates the X6 M Competition gets 13 MPG in the city and 18 MPG on the highway. These numbers show the vehicle’s need for premium fuel. The city MPG reflects the demands of stop-and-go traffic, where the powerful 4.4L V8 engine works to move the vehicle’s weight. The highway mileage is slightly better, but the engine’s power and the vehicle’s aerodynamics mean constant low fuel consumption isn’t possible. You’ll get exciting performance, but expect frequent visits to the gas station.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 BMW X6 M Competition is $3,850. This is based on driving 15,000 miles per year and current national average fuel prices, which change. It’s a significant expense, reinforcing that owners usually aren’t looking for savings. Many other luxury cars have lower fuel costs, but the X6 M Competition buyer wants a specific combination of performance and style. You can see all Bmw fuel economy data on our site.

Real-world expectations

The official EPA numbers are a best-case scenario. Driving hard, often using Sport and Sport+ modes, or even enjoying the V8 engine sound will lower real-world MPG. Expect numbers closer to the low end of the EPA range in mixed driving, and perhaps even lower if you often use the engine’s full power. If you drive the X6 M Competition as designed, the annual fuel bill will likely be much higher.

How it compares

Compared to rivals, the X6 M Competition’s fuel economy is on the low side. The Porsche Cayenne Turbo Coupe, another performance SUV coupe, gets about 17 MPG combined. The Mercedes-AMG GLE 63 S Coupe offers similar performance and styling but gets a slightly better 16 MPG combined. The 1-2 MPG difference might seem small, but it adds up over time in cost and environmental impact. However, the choice is about the total package. Owners of these vehicles are trading maximum performance for efficiency. If you want to compare X6 MPG across all years, we have that information available.

Tips to maximize efficiency

While fuel efficiency might not be the main worry of an X6 M Competition owner, some things can reduce the impact. Avoid quick acceleration and hard braking, since the engine uses the most fuel when quickly changing speed. Smooth, controlled driving can help.

Also, using adaptive cruise control on highways can help keep a steady speed, reducing fuel use.

Make sure your tires are inflated correctly. Low tires increase rolling resistance, making the engine work harder. Check and set your tire pressure to the recommended levels, found on the driver’s side doorjamb. This simple action can affect fuel economy.

Avoid idling. Letting the engine run when not needed wastes fuel. If you’re stopped for more than a minute or two, turn off the engine. Modern cars, like the X6 M Competition, start fast and reliably, so there’s no need to idle. It also cuts emissions and helps the environment.

The BMW has selectable driving modes. While “Sport” and “Sport+” modes are tempting for performance, using “Comfort” or “Eco Pro” modes when possible will improve fuel efficiency. These modes change the engine and transmission to focus on fuel economy over quick acceleration. You’ll still have a lot of power, but the vehicle will use less fuel.

Regular maintenance is important. A well-maintained engine runs better. Change your oil, spark plugs, and air filter regularly as BMW recommends. Fixing small problems quickly can stop them from becoming big problems that affect fuel economy.