BMW X4 M40i: MPG and fuel economy by year
The EPA has rated the BMW X4 M40i across 10 model years, from the 2016 BMW X4 M40i through the 2025 BMW X4 M40i. The most recent 2025 BMW X4 M40i returns 23 combined MPG.
Pick a year below to open the full BMW X4 M40i page for that model year. Each year page covers combined, city, and highway MPG, the trim variants the EPA rates separately, the annual fuel cost across three driving patterns, and a year-over-year comparison so you can see whether the car has improved.
Fuel economy by model year
Combined MPG, city MPG, highway MPG, and the EPA's estimated annual fuel cost for every model year of the BMW X4 M40i. Click any year to see the full breakdown for that model year, including trim variants, the drivetrain, and a comparison against other vehicles in its segment.
| Year | Model | Combined MPG | City | Highway | Annual fuel cost |
|---|---|---|---|---|---|
| 2025 | 2025 BMW X4 M40i | 23 MPG | 22 MPG | 26 MPG | $3,000 |
| 2024 | 2024 BMW X4 M40i | 23 MPG | 21 MPG | 26 MPG | $3,000 |
| 2023 | 2023 BMW X4 M40i | 23 MPG | 21 MPG | 26 MPG | $3,000 |
| 2022 | 2022 BMW X4 M40i | 23 MPG | 21 MPG | 26 MPG | $3,000 |
| 2021 | 2021 BMW X4 M40i | 23 MPG | 21 MPG | 27 MPG | $3,000 |
| 2020 | 2020 BMW X4 M40i | 23 MPG | 21 MPG | 27 MPG | $3,000 |
| 2019 | 2019 BMW X4 M40i | 23 MPG | 20 MPG | 27 MPG | $3,000 |
| 2018 | 2018 BMW X4 M40i | 21 MPG | 18 MPG | 25 MPG | $3,300 |
| 2017 | 2017 BMW X4 M40i | 21 MPG | 19 MPG | 26 MPG | $3,300 |
| 2016 | 2016 BMW X4 M40i | 21 MPG | 18 MPG | 25 MPG | $3,300 |
How the BMW X4 M40i compares against the Small Sport Utility Vehicle 4WD class
Buyers usually compare the BMW X4 M40i against other cars in the same EPA class. The list below shows the most efficient cars in the Small Sport Utility Vehicle 4WD class for the 2025 model year, the latest year on this page. Each link opens the full page for that car.
Source: U.S. EPA fuel economy dataset. Annual fuel cost assumes 15,000 miles of driving per year and a 55% city, 45% highway split.