15 MPG combined. That’s what you can expect if you’re considering the 2021 BMW X5 M. It’s not an economical SUV, it’s a high-performance vehicle wrapped in luxury, designed for blistering acceleration and dynamic handling. Buyers accept the fuel consumption as the cost of entry to a very exclusive club.

city and highway performance

The X5 M’s official EPA ratings explain the 15 MPG figure. City driving yields a measly 13 MPG, which reflects the demands of stop-and-go traffic on a high-output engine. The highway number improves to 18 MPG, a more respectable figure when the twin-turbo 4.4L V8 can settle into a cruising speed. However, even that highway number can drop quickly when you tap into the engine’s power for overtaking. The S8 automatic transmission offers fast shifts but prioritizes performance over fuel efficiency, further contributing to consumption.

annual fuel cost

Expect a significant line item in your annual budget: fuel. The EPA estimates the annual fuel cost for the 2021 BMW X5 M at $3,850. This figure assumes 15,000 miles per year, with a mix of city and highway driving, using the national average fuel price. The X5 M’s high-performance engine requires premium fuel, so expect that cost to be higher than if you drove a vehicle that runs on regular gasoline. It’s a hefty sum, one that underscores the cost required to own a vehicle in this category. Drivers can track their actual fuel costs to compare with this estimate.

real-world expectations

The EPA estimates are a good starting point, but your real-world mileage will vary. Driving habits, frequent short trips, and even tire pressure can impact fuel consumption. Expect that 15 MPG number to dip lower if you frequently indulge in the X5 M’s performance. However, if you primarily use the vehicle for longer highway journeys and drive conservatively, you might see figures closer to the EPA estimates. Keep in mind the X5 M’s weight, it is a large SUV, and that mass requires considerable energy to move and stop.

how it compares

The X5 M competes with other high-performance SUVs where fuel economy is rarely a selling point. The Mercedes-AMG GLE 63 S achieves a similar 15 MPG combined, highlighting the inefficiency of high-output engines. The Porsche Cayenne Turbo fares slightly better at 17 MPG combined, which shows Porsche’s engineering. All Bmw fuel economy data can be found on this site. These vehicles are purchased for their performance and prestige, with fuel economy taking a backseat to capability. Even within the X5 range, the X5 M sits at the extreme end, you’ll find superior X5 MPG across all years in less potent offerings.

tips to maximize efficiency

The X5 M is not designed for fuel efficiency, but some strategies can help minimize consumption. Avoid aggressive acceleration and hard braking. The X5 M’s power is addictive, but resist the urge to exploit it. Gradual acceleration will reduce fuel wasted during rapid speed changes.

Ensure that your tires are properly inflated to the recommended pressure. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. This is important for efficiency and handling on such a powerful vehicle.

Minimize idling, as letting the engine idle for extended periods wastes fuel unnecessarily. If you anticipate a long wait, turn off the engine. Modern engines warm up quickly under load, so there’s no need to idle before driving.

Plan your routes effectively. Avoid congested areas and routes with frequent stop-and-go traffic. Smooth driving at moderate speeds will always yield better fuel economy than navigating through traffic jams.

Consider using the X5 M’s driving modes. Designed for performance, these modes can adjust throttle response and transmission mapping, potentially improving fuel economy in certain driving situations. Experiment to see if any particular mode suits your needs.