If you’re considering a 2019 BMW X4 M40i, the combined fuel economy to remember is 23 MPG. This MPG acknowledges that the X4 M40i is more than just a practical crossover, it’s a performance machine with a coupe-like design. This isn’t a vehicle for those trying to save every penny; it appeals to drivers who value dynamic performance, a premium experience, and unique styling and are willing to compromise on fuel economy.

City and highway performance

The EPA estimates for the 2019 X4 M40i are 20 MPG in the city and 27 MPG on the highway. Consider these figures benchmarks. City driving, with frequent stops and starts that require tapping into the M40i’s strong power, will likely result in fuel economy closer to the low end of the estimate. Highway cruising, especially with adaptive cruise control, might meet or slightly exceed the 27 MPG figure, if you avoid using the engine’s quick response for passing or spirited driving.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2019 BMW X4 M40i to be $2,500. This assumes 15,000 miles of driving per year and national average fuel prices. Remember this is an estimate. Your actual fuel expenses will vary based on your driving habits, the type of fuel you purchase, and changes in fuel prices.

Real-world expectations

Drivers of the 2019 BMW X4 M40i can expect mileage to vary depending on driving style. Expect slightly less on the highway and slightly more in the city because of the vehicle’s stop/start system at red lights. Keep in mind that the turbocharged engine responds to aggressive driving, so heavy acceleration will reduce MPG.

How it compares

The 2019 X4 M40i is in a segment where fuel economy is less important than performance and luxury. The Porsche Macan S, another performance crossover, achieves a similar 20 MPG combined, showing that power has a cost. The Audi SQ5 offers comparable performance and luxury, and achieves around 21 MPG combined. These small differences show that focusing too much on MPG gains in this segment probably won’t sway most buyers. Shoppers might also compare against BMW’s own alternatives; see X4 MPG across all years on our site or all Bmw fuel economy data to explore the wider model range.

Tips to maximize efficiency

Use the Driving Experience Control modes. Selecting “Eco Pro” improves fuel efficiency by changing throttle response, shift points, and climate control. This mode is useful for long highway drives or in heavy city traffic where performance isn’t important.

Pay attention to tire pressure. Keep your tires inflated to the recommended pressure on the driver’s side doorjamb. Underinflated tires increase rolling resistance, which hurts fuel economy. Check and adjust tire pressure regularly, especially when the temperature changes.

Avoid idling. Modern vehicles, including the X4 M40i, have stop/start systems. Allow the system to work, shutting off the engine at stoplights and in traffic. Idling wastes fuel.

Anticipate traffic. Smooth driving improves fuel efficiency. Look ahead and anticipate traffic changes to avoid unnecessary braking and acceleration. Keep a safe following distance to allow for gradual speed adjustments.

Limit aggressive driving. The X4 M40i is fun to drive, but frequent hard acceleration and high-speed driving use fuel quickly. Enjoy the performance sometimes, but drive more calmly during daily commutes to improve fuel economy.