While the 2015 BMW 740i 3.0L 6-cyl gets 22 MPG combined, that’s likely not the primary reason people buy it. Instead, they choose this full-size luxury sedan for its driving experience, luxurious features, and advanced technology. The 740i appeals to buyers who value a premium experience and are willing to accept decent fuel economy as a result.

City and highway performance

The EPA estimates the 2015 BMW 740i 3.0L 6-cyl gets 19 MPG in the city and 28 MPG on the highway. This difference shows the engine performs better at consistent speeds with fewer stops. In stop-and-go city driving, the 740i’s weight and frequent acceleration reduce fuel efficiency. However, on the highway, the efficient 8-speed automatic transmission and the engine’s ability to run at low RPMs at cruising speeds allow it to get close to the EPA’s highway estimate, providing genuinely acceptable fuel consumption on long trips.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 BMW 740i is $2,650. This is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that changing fuel costs and individual driving habits can change this amount. Drivers who are more aggressive or spend more time in heavy traffic will likely spend more on fuel per year. The $2,650 figure provides a useful comparison against other vehicles but is not a guaranteed cost.

Real-world expectations

While the EPA ratings provide a standard, real-world fuel economy often varies. Plenty of 740i drivers report numbers close to the EPA estimates, especially those who focus on fuel-efficient driving. However, drivers who want quick acceleration and often drive in congested areas may see their combined MPG drop closer to the city rating. The selected driving mode also matters; “Eco Pro” mode can improve fuel efficiency, while “Sport” mode prioritizes performance.

How it compares

The 2015 BMW 740i’s fuel economy is about average compared to its competitors. The 2015 Mercedes-Benz S550, with its more powerful V8 engine, achieves a similar 17 city / 26 highway MPG rating. The Audi A8 3.0T, another competitor, has comparable MPG to the 740i. The Lexus LS 460, known for its reliability, gets slightly worse fuel economy. For better MPG in this class, consider a hybrid model, though none were available that year. Before deciding, check 740I MPG across all years to see if different model years may get better gas mileage.

Tips to maximize efficiency

Make good use of the 740i’s selectable driving modes. “Eco Pro” mode changes vehicle settings, like throttle response and shift points, to help you drive fuel-efficiently. This mode works especially well during city driving, helping to reduce how much gas you use when stopping and starting.

Make sure your tires have the correct air pressure. Tires with low pressure increase rolling resistance, making the engine work harder and use more fuel. Check your tire pressure regularly and keep it at the manufacturer’s recommended level, which you can find on a sticker inside the driver’s side doorjamb.

Don’t carry extra weight. Extra weight in the trunk or passenger area reduces fuel efficiency. Take out things you don’t need regularly to lighten the car and improve your MPG. Placing a heavy load in the truck of the 740i sedan will also reduce fuel efficiency even more.

Accelerate smoothly and gradually. Avoiding sudden acceleration and braking can improve fuel economy. Look ahead and maintain a consistent speed when possible to reduce fuel waste. Remember to see all Bmw fuel economy data to see how different driving styles affect MPG.

Consider using cruise control on long highway drives. Cruise control helps keep a steady speed, which can improve fuel efficiency, especially on flat roads. Cruise control may not help as much in hilly areas, but it can still help you save gas on long trips.