27 MPG combined isn’t going to win any awards, but it’s a respectable figure for a refined and reasonably powerful mid-size luxury sedan like the 2022 BMW 540i. More importantly, it’s a trade-off most 540i buyers willingly accept. They prioritize the silken smoothness of BMW’s inline-six engine, the executive-class comfort of the cabin, and the car’s overall dynamic excellence over saving fuel.

City and highway performance

The EPA estimates the 2022 BMW 540i at 25 MPG in the city and a more impressive 32 MPG on the highway. That highway number shows the efficiency of the eight-speed automatic transmission and the engine’s ability to cruise effortlessly at higher speeds. The relatively low city figure indicates the engine’s willingness to rev and the temptation to use its responsiveness in urban environments. Driving style has a significant impact on both city and highway MPG; pressing the accelerator enthusiastically will, unsurprisingly, reduce fuel economy.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2022 BMW 540i is $2,150. This figure is based on driving 15,000 miles per year and using national average fuel prices. The actual cost will vary depending on individual driving habits, local fuel prices, and the type of fuel used. While premium fuel is recommended for optimal performance, the 540i can technically run on regular unleaded, but that could affect the engine’s MPG and output. For drivers putting significantly more than 15,000 miles on their 540i each year, the annual fuel cost will be higher.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy often differs. Many 540i owners report figures slightly below the combined EPA estimate in mixed driving because they use the available performance. However, drivers who prioritize gentle acceleration and consistent highway speeds can often match or even exceed the EPA’s highway figure. Understanding your own driving patterns is key to predicting your actual fuel costs and getting the most out of the 540i’s efficiency.

How it compares

The 540i resides in a competitive segment. The Mercedes-Benz E450 Sedan, another inline-six powered competitor, achieves a similar 26 MPG combined rating. The Audi A6 55 TFSI, with its turbocharged V6, also lands in the same ballpark. Stepping up to a more powerful variant, such as the BMW M550i xDrive, sees fuel economy dip to around 20 MPG combined, a clear consequence of its uprated V8 engine. Some buyers might also consider the Acura TLX Type S, which offers similar performance with a slightly less refined driving experience, but delivers 21 MPG combined. These fuel economy figures matter less to some buyers, especially when considering higher performance variants or models with more features they want. But, for other buyers, the 540I MPG across all years could be a deciding factor, one that pushes them toward the inline-six rather than a thirstier V8.

Tips to maximize efficiency

Engage “Eco Pro” mode. The 540i features selectable driving modes, including an “Eco Pro” setting that optimizes various vehicle parameters for fuel efficiency. This mode reduces throttle sensitivity, adjusts shift points in the transmission, and modifies the climate control system to minimize energy consumption. It’s ideal for relaxed highway cruising or daily commuting when performance isn’t a priority.

Maintain proper tire inflation. Check your tire pressures regularly and ensure they are inflated to the recommended levels (found on the driver’s side doorjamb). Under-inflated tires increase rolling resistance, which negatively impacts fuel economy. A simple tire pressure gauge can save you money at the pump.

Anticipate traffic flow. Avoid abrupt acceleration and braking whenever possible. Smooth, gradual inputs not only improve passenger comfort but also conserve fuel. By anticipating traffic signals and changes in speed, you can maintain momentum and reduce the need for hard braking and subsequent acceleration, which are major fuel economy drains. Coasting to decelerate helps boost MPGs.

Minimize accessory use. Air conditioning, especially on hot days, places a significant load on the engine and reduces fuel economy. Use the climate control system carefully, and consider opening the windows or using the sunroof on milder days. Also, limit the use of other power-hungry accessories like heated seats and high-output audio systems when possible.

Schedule regular maintenance. A well-maintained engine is an efficient engine. Follow the manufacturer’s recommended maintenance schedule for the 540i, including oil changes, air filter replacements, and spark plug inspections. A clean air filter ensures optimal airflow to the engine, while fresh spark plugs promote complete combustion, both of which contribute to improved fuel economy. See all Bmw fuel economy data for more specific service intervals.