26 MPG combined isn’t going to win any efficiency awards, but it’s perfectly acceptable for what the 2024 BMW M440i Convertible is: a stylish, high-performance drop-top designed to thrill more than conserve. This isn’t a car bought by penny-pinchers, but rather by people who appreciate a potent inline-six and the open-air experience, and who are willing to pay a premium for both.

City and highway performance

The M440i Convertible achieves an EPA-rated 23 MPG in the city. Expect this number to change based on driving style. A heavy foot will drop it noticeably, while a more relaxed approach, using the automatic transmission’s higher gears, can bring it closer to the estimate.

On the highway, the M440i fares better, achieving 31 MPG. This is where the smooth-revving six cylinder excels, effortlessly cruising at higher speeds. Long distance road-trips with the top down are a possibility, although be aware that increased wind resistance at highway speed can also impact fuel consumption.

Annual fuel cost

The EPA estimates that the 2024 BMW M440i Convertible will cost $2,250 per year to fuel. This figure is calculated based on driving 15,000 miles annually, using the EPA’s combined MPG rating and assuming national average fuel prices which change daily. Your own fuel expenses will vary depending on your individual driving habits, the type of fuel used (premium is recommended), and local fuel costs.

Real-world expectations

Drivers who want spirited driving and frequently use the M440i’s performance capabilities will likely see fuel economy figures closer to the low end of the EPA range, or even slightly below. However, those who primarily use the car for commutes and want fuel efficiency can achieve figures closer to, or slightly better than, the EPA’s estimates. The M440i has multiple driving modes, and ECO PRO can subtly remap engine and transmission settings for better MPG, but this car is bought for dynamic driving, and most owners will rarely select it.

How it compares

The Audi S5 Cabriolet, a close competitor, achieves a similar 24 MPG combined. The Mercedes-AMG C43 Cabriolet, another German rival, lands around 22 MPG combined. Looking outside Germany, the Ford Mustang GT Convertible delivers around 18 MPG combined, reflecting its focus on raw power; the Mustang Dark Horse is even less frugal. Buyers cross-shopping these cars with the M440i are generally willing to accept a degree of compromise in fuel economy for the specific performance characteristics and brand cachet offered by each model. A buyer looking specifically for efficiency may consider a Lexus RC 300 which reaches 24 MPG combined, but gives up horsepower for that economy. Comparison shopping gives the consumer the ability to find all all Bmw fuel economy data.

Tips to maximize efficiency

Avoid aggressive acceleration and hard braking. The M440i’s responsive engine encourages spirited driving, but smooth and gradual inputs are significantly more fuel-efficient. Anticipate traffic flow and maintain a consistent speed whenever possible. This reduces the need for frequent acceleration and deceleration, which consumes extra fuel.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications, usually found on a sticker inside the driver’s side door jamb. This simple step can improve fuel efficiency.

Minimize idling time. If you’re stopped for more than a minute or two, such as waiting in a parking lot, turn off the engine. Modern engines are designed to restart quickly and efficiently, and prolonged idling wastes fuel unnecessarily. This is especially easy with the M440i’s responsive starter motor.

Take advantage of the automatic transmission. The M440i’s eight-speed automatic is engineered to optimize fuel efficiency while providing quick and smooth shifts. Allow the transmission to handle gear selection, especially during city driving, to maximize MPG; don’t fixate on using the paddle shifters unless you need to select a specific gear for performance.

Keep up with scheduled maintenance. A well-maintained engine runs more efficiently. Regular oil changes, air filter replacements, and tune-ups help ensure that your M440i is operating at peak performance and consuming fuel optimally. If you like the M440i, you can review M440I MPG across all years.