26 MPG combined isn’t going to win any awards for less gas, but it’s a perfectly defensible figure for the 2022 BMW M440i xDrive Convertible. This isn’t a car purchased for hypermiling. It’s bought by people who want open-air thrills, rapid acceleration from its turbocharged inline-six, and the prestige of the BMW badge. Fuel economy, while considered, is secondary to the driving experience.

City and highway performance

The EPA estimates the M440i xDrive Convertible achieves 23 MPG in the city and 31 MPG on the highway. The city figure reflects stop-and-go traffic and the temptations to use the engine’s abundant torque, while the highway number is attainable during steady-state cruising. The 8-speed automatic transmission (S8) is a key component here, offering quick shifts and efficient gear ratios. However, aggressive acceleration will quickly drop both city and highway figures, as will consistently exceeding posted speed limits.

The xDrive all-wheel-drive system provides enhanced grip and stability, but it subtly adds weight and complexity, impacting fuel consumption compared to a rear-wheel-drive variant.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2022 BMW M440i xDrive Convertible at $2,250. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that premium fuel is recommended for optimal performance, and its higher cost is factored into this estimate. Your personal fuel expenses may vary depending on your driving habits, local fuel prices, and the number of miles you drive annually.

Real-world expectations

Expect the 26 MPG combined rating to be realistically achievable for most owners, but individual results will vary. A driver primarily using the vehicle for short city commutes with a heavy foot will likely see numbers in the low 20s. Conversely, someone who does mainly highway driving with gentle acceleration can potentially exceed the 31 MPG highway rating.

The M440i’s driving modes also influence fuel consumption. Sport and Sport+ prioritize performance, while Comfort and Eco Pro modes are designed to maximize efficiency by adjusting throttle response, transmission mapping, and other vehicle settings. Pay attention to all Bmw fuel economy data.

How it compares

The M440i xDrive Convertible occupies a competitive space, and its fuel economy is on par with similar vehicles. The Audi S5 Cabriolet, for example, boasts a similar turbocharged V6 engine and all-wheel drive, achieving an EPA-estimated 21 MPG city and 30 MPG highway. The Mercedes-AMG C43 Cabriolet, with its AMG-enhanced V6, delivers comparable fuel economy. The Porsche 718 Boxster, while not directly comparable in seating or drivetrain layout, offers a sportier experience with a slightly lower fuel economy, around 24 MPG combined for the base model. For buyers considering the M440I MPG across all years, this generation offers a good balance of performance and relative efficiency compared to older, less technologically advanced models. These comparisons matter to the target buyer because they are likely cross-shopping these models, weighing performance, luxury, and overall ownership costs.

Tips to maximize efficiency

Take advantage of the M440i’s Eco Pro mode. This setting optimizes various vehicle systems for improved fuel economy. It adjusts throttle response, transmission shift points, and even climate control settings to conserve fuel. While it might slightly dull the driving experience, it’s effective for maximizing efficiency during mundane commutes.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, which directly impacts fuel consumption. Keep your tires inflated to the recommended pressure listed on the doorjamb sticker. This simple step can noticeably improve your MPG and also extend tire life.

Avoid excessive idling. If you’re stopped for more than a minute, turn off the engine. Modern vehicles are designed to restart quickly and efficiently, and idling wastes a significant amount of fuel, especially in a turbocharged engine.

Plan your routes efficiently. Avoid congested areas and prioritize routes with fewer stop-and-go situations. Smooth, consistent driving habits are key to maximizing fuel economy, and avoiding traffic jams prevents unnecessary fuel consumption.

Resist the urge to constantly accelerate aggressively. While the M440i’s engine is undeniably potent, frequent hard acceleration dramatically decreases fuel economy. Smooth, gradual acceleration not only saves fuel but also contributes to a more comfortable and relaxed driving experience.