20 MPG combined isn’t likely to be the headline figure attracting buyers to the 2015 BMW 550i. This isn’t a car designed to deliver Prius-rivalling efficiency; instead, it wraps a potent 4.4L V8 engine in a package of luxury, performance, and technology that appeals to a specific type of driver: one who prioritizes power and a dynamic driving experience, and who is willing to accept middling fuel economy as part of the deal. These owners are often more concerned with what the car *can* do than with absolute frugality.

City and highway performance

The EPA estimates peg the 550i at 17 MPG in the city and 25 MPG on the highway. The city rating reflects the realities of stop-and-go traffic, where the 4.4L V8’s thirst becomes more apparent. The smooth and responsive nature of the engine, combined with the smart programming of the 8-speed automatic transmission (S8), allows drivers to make the most of each gallon, even in urban environments. The 25 MPG highway rating, while not stellar, is achievable during steady-state cruising. The car’s aerodynamic profile and efficient transmission help to keep fuel consumption in check on longer journeys, although enthusiastic use of the throttle will certainly erode that figure.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 BMW 550i at $2,900. This figure is based on driving 15,000 miles per year and using the EPA’s projected national average fuel prices. Keep in mind that actual fuel costs can vary significantly depending on individual driving habits, local fuel prices, and the specific type of fuel used. Those who frequently engage in spirited driving or spend a significant amount of time in congested traffic will likely exceed this estimate. It is also important to note that premium fuel is recommended, or even required, for optimal performance, further contributing to the overall cost.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world fuel economy often differs. Aggressive acceleration, frequent short trips, and driving in hilly terrain can all negatively impact fuel consumption. Drivers who adopt fuel-efficient driving techniques and spend more time on the highway may see figures that approach or even slightly exceed the EPA estimates. Also consider that variations in fuel quality and seasonal changes in fuel blends can influence MPG. A realistic expectation for most owners of the 2015 BMW 550i is likely to be somewhere in the range of 18-23 MPG combined, depending on driving style and conditions. You can also research 550I MPG across all years to get an idea of how past and future models compare.

How it compares

The 2015 BMW 550i exists in a competitive segment, and its fuel economy must be viewed in that context. The Mercedes-Benz E550 (from the same era) with its twin-turbo V8 offers similar performance but achieves about 18 MPG combined. The Audi S6, with its turbocharged V8, lands around 21 MPG combined. Even the V6 versions of some of these competitors, like the BMW 535i, don’t offer dramatically better fuel economy, typically achieving around 24 MPG combined, a relatively small gain for a significant step down in performance. This highlights the compromise inherent in this segment; buyers are typically willing to sacrifice some fuel efficiency for the power and prestige that these vehicles offer. For access to all Bmw fuel economy data visit the fuel economy hub.

Tips to maximize efficiency

Lighten the load. The 2015 550i is a substantial car, and carrying unnecessary weight only exacerbates its fuel consumption. Remove any items from the trunk or cabin that aren’t essential for daily driving. This small change can incrementally improve fuel economy over time.

Monitor tire pressure regularly. Underinflated tires increase rolling resistance, making the engine work harder and reducing fuel efficiency. Check the tire pressure at least once a month and inflate the tires to the recommended pressure listed on the sticker inside the driver’s side door jamb.

Anticipate traffic conditions and avoid aggressive acceleration and braking. Smooth, gradual acceleration and anticipating traffic flow can significantly improve fuel economy. Avoid sudden bursts of speed and hard braking, as these actions consume more fuel.

Consider using the car’s driving modes. The 550i typically offers different driving modes, such as “Eco Pro” or “Comfort,” which optimize various vehicle settings for greater fuel efficiency. Experiment with these modes to see if they suit your driving style and commute.

Service your vehicle regularly. Proper maintenance, including regular oil changes, air filter replacements, and spark plug maintenance, ensures that the engine is running at peak efficiency, which can positively impact fuel economy. Follow the manufacturer’s recommended maintenance schedule.