26 MPG combined won’t win any awards for less gas, but for the 2022 BMW M340i xDrive Sedan, it’s acceptable. This isn’t a hybrid or an economy car; it’s a performance sedan with a potent turbocharged inline-six engine and standard all-wheel drive. The typical M340i buyer prioritizes driving dynamics and a premium experience over squeezing every last mile from a gallon of fuel. They understand the trade-off and are willing to accept it for the performance.

City and highway performance

The EPA estimates the M340i xDrive at 23 MPG in the city and 32 MPG on the highway. The city figure reflects the stop-and-go driving and frequent acceleration that this car suits. The responsive throttle and effortless power delivery make navigating urban environments enjoyable, even if it comes at a slight fuel economy penalty. The highway MPG proves that the M340i is still capable of respectable efficiency on longer journeys. The smooth-shifting eight-speed automatic transmission and refined engine contribute to relaxed and relatively economical cruising at higher speeds. Aggressive driving will quickly push that highway number down.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 BMW M340i xDrive at $2,250. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use (premium is recommended), and local fuel prices. This $2,250 benchmark provides a useful reference point for budgeting purposes.

Real-world expectations

While the EPA estimates provide a standardized comparison tool, real-world fuel economy often differs. Some M340i owners report achieving figures close to the EPA estimates, but expect that city MPG can easily dip below 20 with enthusiastic driving. On the highway, disciplined drivers can sometimes exceed the 32 MPG rating, particularly on long trips with minimal stops. The M340i’s fuel economy is driver-dependent. Gentle acceleration and anticipating traffic flow will yield the best results, while frequent bursts of speed will significantly reduce MPG.

How it compares

Compared to its competitors, the M340i xDrive’s fuel economy is competitive. The Audi S4, for example, is EPA-rated at 24 MPG combined, slightly lower than the M340i. The Mercedes-AMG C43 sedan achieves a similar 22 MPG combined. The Genesis G70 3.3T lands near 20MPG combined. These differences contribute to the overall cost of ownership, but the M340i buyer is typically more focused on the driving experience than saving a few dollars at the pump. See all Bmw fuel economy data to see other models. If you need even better fuel economy, consider the BMW 330e plug-in hybrid. You should also check out M340I MPG across all years to see how the model has changed.

Tips to maximize efficiency

The M340i xDrive’s driving mode settings can impact fuel economy. Select “Eco Pro” mode for relaxed driving, which optimizes throttle response and transmission mapping for maximum efficiency. “Comfort” mode offers a good balance of performance and economy, “Sport” mode prioritizes performance and will drastically reduce MPG.

Avoid aggressive acceleration and braking. The M340i’s turbocharged engine is responsive, but using full throttle frequently will consume considerably more fuel. Smooth, gradual acceleration and anticipating traffic conditions to minimize braking will improve your MPG.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb.

Minimize idling. Idling wastes fuel. If you’re stopped for more than a minute, turn off the engine to conserve fuel. Modern engines are designed for frequent starts and stops, so there’s no need to worry about excessive wear and tear.