BMW M340i xDrive Sedan: MPG and fuel economy by year
The EPA has rated the BMW M340i xDrive Sedan across 5 model years, from the 2022 BMW M340i xDrive Sedan through the 2026 BMW M340i xDrive Sedan. The most recent 2026 BMW M340i xDrive Sedan returns 29 combined MPG.
Pick a year below to open the full BMW M340i xDrive Sedan 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 M340i xDrive Sedan. 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 |
|---|---|---|---|---|---|
| 2026 | 2026 BMW M340i xDrive Sedan | 29 MPG | 26 MPG | 33 MPG | $2,400 |
| 2025 | 2025 BMW M340i xDrive Sedan | 29 MPG | 26 MPG | 33 MPG | $2,400 |
| 2024 | 2024 BMW M340i xDrive Sedan | 26 MPG | 23 MPG | 31 MPG | $2,650 |
| 2023 | 2023 BMW M340i xDrive Sedan | 26 MPG | 23 MPG | 32 MPG | $2,650 |
| 2022 | 2022 BMW M340i xDrive Sedan | 26 MPG | 23 MPG | 32 MPG | $2,650 |
How the BMW M340i xDrive Sedan compares against the Compact Cars class
Buyers usually compare the BMW M340i xDrive Sedan against other cars in the same EPA class. The list below shows the most efficient cars in the Compact Cars class for the 2026 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.