18 MPG combined. Let’s be frank: nobody buys a 2020 BMW X5 M50i for its fuel economy. They buy it for the effortless punch from its twin-turbocharged 4.4L V8, for its confident handling, and for the prestige of owning a vehicle with an M badge. This X5 variant isn’t targeting the hybrid crowd or those prioritizing frugality. It caters to drivers who want serious performance wrapped in a luxurious and practical SUV package, and they’re perfectly aware that fuel consumption will be a secondary consideration.

City and highway performance

The EPA estimates the X5 M50i will achieve 16 MPG in the city and 22 MPG on the highway. These figures reflect the engine’s significant power output and the vehicle’s substantial weight. Stop-and-go traffic will inevitably take a toll, dropping mileage even lower than the official city rating. On the open road, expect to get closer to the 22 MPG figure if you keep your driving style relaxed. However, the readily available power always beckons so resisting the urge to use it is difficult, and that will certainly impact your highway fuel economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 BMW X5 M50i at $3,200. This calculation is based on driving 15,000 miles per year and using national average fuel prices for premium gasoline, which is required for optimal performance. Keep in mind that fluctuating gas prices can dramatically affect this figure, potentially pushing it even higher. If you drive more than 15,000 miles a year, expect to spend considerably more on fuel. Conversely, those with shorter commutes may see lower annual fuel costs.

Real-world expectations

Real-world fuel economy for the X5 M50i can fluctuate substantially based on driving habits, traffic conditions, and terrain. Aggressive acceleration, frequent hard braking, and extended idling will all negatively impact fuel consumption. Those living in hilly areas or frequently towing will also see lower-than-EPA numbers. Expect to see figures slightly below the official ratings during typical daily driving. While some drivers may achieve the EPA estimates, many will likely experience MPG numbers closer to the low teens in mixed driving conditions. Drivers who regularly use the car’s performance will see even lower figures.

How it compares

Compared to other performance SUVs in its class, the X5 M50i’s fuel economy is par for the course. The Mercedes-AMG GLE 53, with its turbocharged inline-6, achieves around 20 MPG combined. A Porsche Cayenne S, with its turbocharged V6, manages similar figures, around 19 MPG combined. The Land Rover Range Rover Sport, with its supercharged V8, sees 17 MPG combined. If fuel economy is a concern, lower trim levels of the X5 or other SUVs with smaller engines or hybrid powertrains offer significantly better efficiency. For example, the X5 xDrive40i achieves 23 MPG combined, but those alternatives don’t provide the same level of performance or visceral experience as the M50i. Shoppers can review X5 MPG across all years to find the best option.

Tips to maximize efficiency

Although fuel economy may not be a top priority, there are methods to improve mileage, even in a performance-oriented SUV like the X5 M50i. Smooth and steady acceleration will minimize fuel consumption compared to aggressive throttle inputs. Anticipate traffic flow and avoid unnecessary braking to maintain momentum. Also, avoid “jackrabbit” starts whenever possible to conserve your fuel levels.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel efficiency. Consult the sticker on your driver’s side doorjamb for the recommended tire pressure or consult your owner’s manual.

Remove any unnecessary weight from the vehicle. Extra cargo increases the engine’s workload, negatively impacting fuel economy. Regularly clear out any items you don’t need, especially heavy objects. This is an easy way to improve your X5 M50i’s fuel economy without sacrificing any of its performance capabilities.

Consider using the vehicle’s Eco Pro drive mode if available and if you’re not in a rush. It adjusts the engine and transmission settings to prioritize fuel efficiency. While it reduces throttle response, it can make a noticeable difference on longer trips.

Regular maintenance is critical. Ensure your engine air filter is clean and that your car is up-to-date on all scheduled maintenance, especially oil changes and spark plug replacements. A well-maintained engine operates more efficiently, maximizing fuel economy. Check all Bmw fuel economy data to compare the X5 50i to other models.