28 MPG combined is respectable for the 2025 BMW 540i xDrive Sedan, especially when you consider what the car is designed for. This isn’t a hybrid designed for maximum fuel sipping; it’s a luxury performance sedan engineered to deliver effortless power and all-weather confidence. The buyer for this car prioritizes a smooth, responsive engine, a refined driving experience, and the security of all-wheel drive. Fuel economy is a consideration, but it tends to be less important than ultimate performance or advanced tech features.

City and highway performance

The EPA estimates for the 540i xDrive break down to 26 MPG in the city and 33 MPG on the highway. The city figure reflects the efficiency of the 3.0L inline-six engine with mild-hybrid technology during stop-and-go driving, while the highway number showcases its ability to cruise efficiently at higher speeds. The eight-speed automatic transmission also plays a role, keeping the engine in its optimal power band regardless of driving conditions.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2025 BMW 540i xDrive is $2,050. This figure is based on driving 15,000 miles per year and using national average fuel prices. Remember that actual fuel costs will vary depending on your individual driving habits, local fuel prices, and the type of fuel you use. While premium fuel is recommended for optimal performance, the impact of this on overall cost should be factored in and balanced with fuel economy expectations.

Real-world expectations

While the EPA estimates provide a benchmark, real-world fuel economy can vary. Drivers with a heavier foot or those who frequently use the car’s Sport mode may see figures closer to the lower end of the scale. However, those who prioritize fuel efficiency and spend more time on the highway might achieve results that exceed the EPA’s estimates. Aggressive acceleration and frequent short trips will always take a toll on fuel economy.

How it compares

The 540i xDrive holds its own against key competitors. The Mercedes-Benz E450 4MATIC sedan, for example, achieves a similar combined MPG of around 25-26 MPG with its turbocharged six-cylinder engine and all-wheel drive. The Audi A6 55 TFSI quattro offers similar performance and size and roughly matches the 540i’s MPG. Looking outside the German brands, the Genesis G80 3.5T AWD sits in a comparable range. The 540i xDrive owner may be cross-shopping these vehicles. The subtle differences in MPG are unlikely to sway a decision driven by brand loyalty, feature preference, or driving dynamics.

Tips to maximize efficiency

Take advantage of the 540i’s driving modes. Select the “Eco Pro” mode for everyday commuting to optimize fuel consumption. This mode adjusts throttle response, shift points, and climate control settings to prioritize efficiency without drastically impacting performance.

Gentle acceleration and consistent speeds are key. Avoid hard acceleration and sudden braking, as these can significantly reduce fuel economy. Anticipate traffic flow and maintain a steady pace whenever possible.

Ensure proper tire inflation. Check your tire pressure regularly and inflate your tires to the recommended pressure listed on the doorjamb. Underinflated tires create more rolling resistance, which can reduce fuel economy.

Minimize idling. Idling consumes fuel without covering any distance. If you anticipate being stopped for more than a minute, turn off the engine. Modern cars restart quickly and reliably, making this an easy way to save fuel.

Consider using cruise control on the highway. Engaging cruise control can help maintain a consistent speed, which improves fuel economy, especially on long drives. All Bmw fuel economy data is easily accessible online, but employing these driving habits will net the most significant real-world improvements.