20 MPG combined from the 2015 BMW 750i’s 4.4L V8 isn’t going to win any awards, but it’s a figure most owners readily accept as the cost of entry into a truly luxurious and effortlessly powerful sedan. This isn’t a car purchased by those focused on minimizing their gas consumption; it’s for executives, entrepreneurs, and drivers who value performance, comfort, and prestige above all else. Fuel efficiency is secondary to the driving experience, but it’s still important to understand the car’s fuel consumption.

City and highway performance

The EPA estimates 17 MPG in city driving and 25 MPG on the highway. This difference highlights the 750i’s fuel efficiency strengths and weaknesses. Stop-and-go city traffic is hard on the twin-turbocharged 4.4L V8. Its weight, combined with frequent acceleration, increases fuel use. The highway figure, however, is more appealing. The smooth-shifting 8-speed automatic transmission helps the engine settle into a comfortable cruising rpm, allowing for respectable fuel economy during long journeys. Reaching that 25 MPG figure requires a light touch on the accelerator and consistent speeds.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2015 BMW 750i at $2,900, or $241.67 per month. This is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, with average fuel prices at the time of testing. Your personal fuel costs will vary depending on how and where you drive, and the prevailing gasoline prices in your area. Drivers who primarily use the 750i for short commutes in congested urban environments will likely exceed this estimate. Those who frequently embark on long road trips may find themselves spending less. The EPA provides a standardized benchmark for comparison.

Real-world expectations

While the EPA provides a standardized test, real-world MPG for the 750i often is a bit lower. Aggressive driving, a heavy foot, and frequent use of the car’s impressive acceleration will reduce fuel economy. Many owners see averages closer to 15 MPG in the city and perhaps 23 MPG on the highway if they frequently enjoy the car’s performance. Disciplined drivers who prioritize smooth acceleration and consistent speeds can often match or even slightly exceed the EPA estimates. The 750I MPG across all years showcases a range of experiences demonstrating this fact.

How it compares

The 2015 BMW 750i exists in a competitive segment of luxury sedans where fuel economy is rarely the primary selling point. The Mercedes-Benz S550 from the same year, also featuring a turbocharged V8, gets a similar 17 MPG city and 26 MPG highway. The Audi A8 4.0T offers comparable performance and fuel economy, hovering around 18 MPG city and 28 MPG highway. These figures are not dramatically different; for buyers in this class, the nuances of driving dynamics, interior appointments, and brand prestige often outweigh minor variations in fuel efficiency. Even BMW’s own offerings show how similar competing models are; viewing all Bmw fuel economy data shows only slight differences in fuel economy in the luxury segment.

Tips to maximize efficiency

Take advantage of the “Eco Pro” driving mode. This mode adjusts throttle response, transmission shift points, and climate control settings to prioritize fuel efficiency. Even though this may reduce the car’s responsiveness, it can noticeably improve MPG, especially on longer journeys.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate tires to the recommended level, typically found on a sticker inside the driver’s side doorjamb. Consult your owner’s manual regarding proper tire maintenance.

Anticipate traffic flow and avoid hard braking. Quick acceleration and hard stopping wastes fuel. By anticipating traffic conditions and maintaining a smooth, consistent speed, you can minimize unnecessary fuel consumption. Look far ahead, and plan your route to avoid stop-and-go traffic whenever possible.

Minimize idling. Letting the engine idle for extended periods wastes fuel unnecessarily. If you’re stopped for more than a minute, consider turning off the engine, especially in city traffic. Restarting the modern BMW engine consumes minimal fuel compared to prolonged idling. The automatic start/stop feature handles this in some cases.

Keep up with scheduled maintenance. A properly maintained engine runs more efficiently. Ensure you follow the recommended maintenance schedule, including regular oil changes, air cleaner replacements, and spark plug inspections. Clean or replace the air filter to ensure the engine has access to clean airflow.