16 MPG combined. That’s the figure for the 2020 BMW X4 M. For those drawn to the X4 M’s aggressively sloped roofline, snarling exhaust note, and wildly fun driving experience, it represents a necessary cost for the performance and exclusivity it offers. This isn’t a vehicle bought by people prioritizing fuel savings. It’s about making a statement, and that statement often comes with a price.

City and highway performance

The EPA estimates the X4 M achieves 14 MPG in the city and 19 MPG on the highway. The reality, of course, depends heavily on driving style. If you use the throttle frequently, you will see numbers significantly lower than the EPA’s city estimate. Drive with unusual restraint on the highway, and you might just crack the 20 MPG mark. These figures reflect the nature of the X4 M’s powerplant, a potent, turbocharged 3.0-liter inline-six engine that prioritizes power delivery over fuel efficiency. The automatic (S8) transmission shifts quickly and effectively, but it’s geared toward maximizing performance, which contributes to the less-than-stellar fuel economy.

Annual fuel cost

The estimated annual fuel cost for the 2020 BMW X4 M is $3,600. This figure is calculated by the EPA based on driving 15,000 miles per year, with a 55% city / 45% highway driving split, using national average fuel prices. This puts the X4 M firmly in the “gas guzzler” category and is a significant expense to factor into the ownership experience. While those wealthy enough to afford the X4 M’s considerable price tag might not worry about this expense a great deal, it is still a factor worth considering.

Real-world expectations

Don’t expect to consistently match the 16 MPG combined rating. The X4 M’s intoxicating power encourages aggressive driving, and the vehicle’s weight and aerodynamic compromises associated with its coupe-like roofline don’t help. If you live in a congested urban environment with frequent stop-and-go traffic, expect your fuel economy to be much closer to the 14 MPG city rating, or even lower. Conversely, if you primarily drive on open highways with minimal traffic, you might see fuel economy closer to the 19 MPG highway estimate, though even that figure may be optimistic.

How it compares

The X4 M’s fuel economy lags behind many of its competitors. The Mercedes-AMG GLC 43 Coupe, for example, manages a slightly better 19 MPG combined. Even the Alfa Romeo Stelvio Quadrifoglio, known for its exhilarating performance, achieves a similar 17 MPG combined. The Porsche Macan S, a more practical choice for some, delivers around 20 MPG combined. These comparisons matter because they highlight the trade-offs in the X4 M’s design: while other performance SUVs offer similar levels of power and handling with better efficiency, the X4 M caters to buyers who prioritize a distinctive visual identity and a fun driving experience above all else. See X4 MPG across all years to contrast to less powerful trims.

Tips to maximize efficiency

Use the “Eco Pro” driving mode when possible. This setting remaps the throttle response and shift points to prioritize fuel economy over performance. While it does diminish the X4 M’s engaging character, it can noticeably improve fuel consumption, especially during highway driving.

Avoid excessive idling. The X4 M’s engine consumes a surprising amount of fuel at idle. If you anticipate waiting for more than a minute or two, it’s best to shut off the engine. Modern engine start/stop systems are built to handle frequent restarts without causing undue wear and tear.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which directly impacts fuel economy. Check your tire pressure regularly and ensure it matches the recommended pressure listed on the driver’s side doorjamb. You could also consider using tires designed to have low rolling resistance should you decide or need to replace them.

Reduce unnecessary weight. Carrying excess cargo in the X4 M adds to its overall weight, which reduces fuel efficiency. Remove any unnecessary items from the vehicle to minimize the load on the engine. Every bit helps, especially with a thirsty vehicle.

The X4 M buyer is willing to sacrifice in the fuel economy department for what the vehicle *is*. The tradeoff exists between a showy exterior appearance, a strong powerplant, and high fuel costs. To see all BMW fuel economy data, check out our other pages.