The 2021 BMW X5 M50i, with its twin-turbocharged V8, gets 18 MPG combined. This SUV prioritizes performance and luxury. The M50i offers a thrilling driving experience with fast acceleration, confident handling, and a great sound. Buyers understand the trade-off in fuel economy and may have other, more economical vehicles or simply aren’t concerned about fuel costs when buying a performance vehicle.

City and highway performance

The EPA estimates the X5 M50i achieves 16 MPG in city driving and 22 MPG on the highway. The lower city figure reflects stop-and-go traffic, where the M50i’s engine works harder. The highway figure shows the engine can be efficient at consistent speeds, aided by the eight-speed automatic transmission, which allows the engine to cruise at low RPMs.

Annual fuel cost

Based on driving 15,000 miles annually and using national average fuel prices, the EPA estimates the 2021 BMW X5 M50i will cost $3,200 per year to fuel. This assumes a fairly even mix of city and highway driving. Individual driving habits, local fuel prices, and weather can significantly affect real-world fuel costs.

Real-world expectations

While the EPA provides a standardized test, real-world mileage can vary. Aggressive driving, frequent short trips, and heavy loads will negatively impact fuel economy. Owners who prioritize performance and often use the M50i’s power will likely see figures closer to or below the EPA’s city estimate. Drivers who adopt a more conservative driving style, especially on longer highway journeys, could achieve slightly better gas mileage than the EPA highway rating.

How it compares

The X5 M50i’s fuel economy is typical for its performance. You’ll find better efficiency within the BMW lineup if you view all Bmw fuel economy data. For example, the X5 xDrive40i, with its inline-six engine, gets an EPA combined rating of 23 MPG. The performance-oriented Mercedes-AMG GLE 53 Coupe achieves a similar 19 MPG combined. The Audi SQ7, another performance SUV, is rated at 17 MPG combined. These comparisons show the X5 M50i isn’t dramatically different from its direct competitors. Buyers shopping this segment are less likely to cross-shop with Lexus or Acura SUVs, which would be more fuel efficient but with different driving dynamics and performance.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The M50i’s twin-turbo V8 delivers effortless power, making it easy to accelerate quickly; however, each burst consumes extra fuel. Gentle acceleration and anticipating traffic flow can improve fuel economy. The engine is designed for performance, but it doesn’t always need to be used fully.

Use the ECO PRO driving mode. This mode alters the engine mapping, transmission shift points, and throttle response to prioritize fuel efficiency. It does reduce the M50i’s performance but can make a difference, especially in city driving. Experiment to see how it impacts your driving and fuel consumption.

Ensure proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regularly check your tire pressures and inflate them to the recommended levels found on the driver’s side doorjamb. This can improve both fuel economy and tire life.

Minimize idling. Idling wastes fuel, especially in a large engine. If you’re stopped for more than a minute or two, turn off the engine. Modern vehicles start up quickly and efficiently, and restarting the engine consumes less fuel than letting it idle, which matters in city driving with frequent traffic lights.

Keep up with scheduled maintenance. Regular maintenance, including oil changes, air filter replacements, and spark plug replacements, ensures the engine runs well. A well-maintained engine is more efficient. Consult your owner’s manual for the recommended maintenance schedule or check the X5 MPG across all years to monitor for trends as the vehicle ages.