27 MPG combined is a respectable figure for the 2021 BMW 540i, especially considering the car’s potent 335-horsepower inline-six engine, luxurious interior, and poised handling that defines the BMW brand. The 540i caters to drivers who value a blend of performance and refinement, and for that mission, its fuel economy is a reasonable compromise.

City and highway performance

The EPA estimates return 25 MPG in the city and 32 MPG on the highway for the 2021 BMW 540i. These numbers reflect the efficiency of BMW’s B58 3.0-liter turbocharged inline-six, an engineering achievement that delivers smooth power across the rev range. The eight-speed automatic transmission also plays an important role, offering quick shifts for spirited driving and tall ratios for relaxed highway cruising. Expect the highway figure to hold true on long road trips, while enthusiastic driving in urban environments will naturally reduce the city MPG.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2021 BMW 540i is $2,150. This figure is based on driving 15,000 miles per year and using national average fuel prices. Actual costs will vary depending on individual driving habits and local fuel prices, but $2,150 provides a benchmark for potential owners to consider. Drivers with longer commutes or those who frequently drive in congested areas may see a higher annual fuel expenditure than the EPA estimate.

Real-world expectations

While the EPA provides a standardized measurement, real-world fuel economy can fluctuate based on several factors. Aggressive acceleration, frequent braking, and sustained high speeds can all decrease fuel efficiency. Conversely, smooth and deliberate driving, combined with consistent highway cruising, can help you achieve or even exceed the EPA estimates. The 540i’s driving mode selector allows you to tailor its performance; selecting “Eco Pro” mode can optimize various vehicle settings such as throttle response and shift points to prioritize fuel conservation.

How it compares

The 2021 BMW 540i’s fuel economy places it competitively within its class, but other options offer different levels of efficiency. The Mercedes-Benz E450, another popular choice in the segment, achieves a similar combined MPG figure of 26 MPG with its turbocharged six-cylinder engine. However, the Audi A6 55 TFSI, with its comparable powertrain, also lands around 25 MPG combined. For buyers prioritizing fuel efficiency above all else, the Lexus ES 300h hybrid boasts a significantly higher 44 MPG combined, but it sacrifices the performance and driving dynamics that define the 540i’s appeal. Potential buyers should also consider all Bmw fuel economy data across their model choices.

Tips to maximize efficiency

Use the 540i’s “Eco Pro” driving mode. This setting adjusts the throttle response and shift patterns to prioritize fuel efficiency. It can make a noticeable difference, especially during city driving or stop-and-go traffic. Note that using “Sport” mode will enhance throttle and transmission response, but will predictably lower fuel economy.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, leading to reduced fuel economy. Consult the sticker on the driver’s side doorjamb for the recommended tire pressure, and ensure your tires are properly inflated. This is particularly important on the 540i, as it comes standard with performance tires that are sensitive to pressure changes.

Reduce unnecessary weight in the vehicle. Carrying extra cargo adds to the overall weight, which impacts fuel consumption. Remove any items you don’t need to lighten the load. A few hundred extra pounds can make a noticeable difference, especially in a car known for its performance capabilities like the 540I MPG across all years of production.

Drive smoothly and avoid aggressive acceleration. The 540i’s potent engine easily delivers exhilarating performance, but rapid acceleration consumes more fuel. Gradual acceleration and maintaining a steady speed can significantly improve your fuel efficiency. Use the cruise control on the highway for consistent speeds and optimal fuel economy.