20 MPG combined might not be exciting, but for the 2020 BMW M550i xDrive and its snarling 4.4L twin-turbo V8, it’s acceptable. This isn’t a car for those who prioritize saving every drop of fuel; it’s a high-performance executive sedan designed to conquer autobahns and deliver instant power. The M550i prioritizes performance above all else.

City and highway performance

The EPA estimates 18 MPG in the city and 25 MPG on the highway. The city figure reflects stop-and-go driving, where the V8’s power is frequently used, even briefly. Highway performance is respectable, though still behind some competitors. The eight-speed automatic transmission (specified as S8) helps keep the engine in its optimal range, maximizing efficiency when possible. The sheer power encourages a heavy right foot. This car excels on long, open stretches where effortless cruising at higher speeds is ideal.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 BMW M550i xDrive at $2,900. This is based on driving 15,000 miles per year and assumes fuel prices consistent with national averages at the time of calculation. Individual fuel costs will vary depending on driving habits and local fuel prices, but this provides a baseline. It’s a significant expense, but for buyers in this segment, it’s often the price for this performance and luxury. For those interested in seeing all Bmw fuel economy data, it’s clear this is toward the lower end of the BMW spectrum.

Real-world expectations

The EPA estimates offer a useful comparison point, but real-world MPG will vary. Expect to see figures within a few MPG of the EPA estimates, depending on your driving style and typical routes. Aggressive acceleration, frequent hard braking, and extended idling will all reduce fuel economy. The type of fuel used can also have an impact. The M550i doesn’t require premium fuel, but it is recommended for optimal performance, which increases fuel costs.

How it compares

The M550i’s fuel economy places it in a specific segment of the luxury performance sedan market. The Mercedes-AMG E53 Sedan, with its mild-hybrid inline-6, achieves a slightly better 22 MPG combined. The Audi S6, also powered by a turbocharged V6, posts a similar 21 MPG combined. The Porsche Panamera 4S, with its twin-turbo V6, offers slightly better efficiency, around 21 MPG combined. M550i buyers often desire the V8 experience. They value the instant throttle response, distinctive sound, and raw power that the M550i’s V8 delivers, even with a slight fuel economy penalty. Potential buyers should also view M550I MPG across all years to understand previous models’ fuel efficiency.

Tips to maximize efficiency

Use the M550i’s driving modes. Select “Eco Pro” mode for relaxed cruising, which optimizes throttle response and transmission behavior for maximum fuel efficiency. While it reduces the excitement, it’s beneficial on long highway stretches where performance isn’t important.

Drive smoothly and consistently. Avoid aggressive acceleration and hard braking whenever possible. Anticipate traffic flow and maintain a steady speed to minimize fuel consumption. The M550i encourages spirited driving, but a measured approach will improve MPG.

Ensure your tires are properly inflated to the recommended pressure. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly, especially during seasonal temperature changes.

Minimize idling. Modern engines consume fuel even when stationary. If you anticipate being stopped for more than a minute, it’s more efficient to turn off the engine. The M550i’s automatic start/stop system helps with this, but avoid disabling it unnecessarily.

Keep up with scheduled maintenance. A well-maintained engine runs more efficiently. Ensure regular oil changes, air filter replacements, and spark plug inspections are performed according to BMW’s recommended service intervals.