26 MPG combined. That’s what you get with the 2023 BMW M440i Convertible, and while it won’t win any hypermiling awards, it’s perfectly acceptable for a stylish, performance-oriented drop-top. People who buy an M440i Convertible aren’t hyper-focused on fuel consumption. They’re after open-air thrills, BMW’s signature driving dynamics, and luxury. The slight compromise in efficiency is a price they’re willing to pay for the experience this car delivers.

City and highway performance

The EPA estimates the M440i Convertible achieves 23 MPG in the city and 31 MPG on the highway. The lower city figure reflects the stop-and-go driving conditions that force the engine to work harder. The smooth, responsive nature of the turbocharged inline-six engine, however, reduces some of the fuel economy hit in urban environments. On the open road, the M440i Convertible settles into a comfortable cruise, allowing the engine to operate more efficiently. The eight-speed automatic transmission also plays an important role, keeping the engine in its optimal power band and maximizing fuel economy at higher speeds.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 BMW M440i Convertible at $2,250. This figure is calculated based on driving 15,000 miles per year, with a mix of city and highway driving, using national average fuel prices. Keep in mind that this is just an estimate, and your actual fuel costs may vary depending on your driving habits, location, and fuel prices in your area. Drivers who primarily drive in the city or have a heavier foot will likely spend more than the estimated $2,250 annually. Those who do more highway driving and practice fuel-efficient driving techniques could potentially spend less. If you’re interested in learning more, check out M440I MPG across all years.

Real-world expectations

While the EPA estimates provide a useful benchmark, your real-world fuel economy with the M440i Convertible will depend on factors such as driving style, traffic conditions, and maintenance. Expect to see figures hovering around the EPA estimates if you drive carefully and prioritize fuel efficiency. However, if you frequently exploit the engine’s performance capabilities and spend most of your time in congested areas, expect lower numbers. Drivers often report averaging around 24-28 MPG in mixed driving conditions.

How it compares

In the realm of sporty convertibles, the M440i’s fuel economy is competitive. The Audi S5 Convertible, with its turbocharged V6, achieves an EPA-estimated 21 MPG city and 30 MPG highway. The Mercedes-Benz C300 Cabriolet, powered by a turbocharged four-cylinder, offers slightly better numbers at 24 MPG city and 33 MPG highway, but it doesn’t deliver the same level of performance or exhilarating driving feel as the M440i. These are important distinctions. The M440i buyer wants a certain level of power and refinement which outweighs a marginal gain in MPG. Those looking for maximum efficiency may consider a less powerful engine option or a different type of vehicle altogether. To see all Bmw fuel economy data, check here.

Tips to maximize efficiency

Engage Eco Pro mode when cruising. The BMW’s driving modes allow you to tailor the car’s performance, and Eco Pro optimizes fuel efficiency by adjusting throttle response, transmission settings, and climate control. When you don’t need immediate power, let the car manage consumption for you.

Maintain consistent speeds on the highway. Frequent acceleration and braking consume more fuel. Using cruise control on long highway stretches can help you maintain a steady speed and improve your MPG. The M440i’s adaptive cruise control system makes this even easier.

Ensure your tires are properly inflated. Underinflated tires create more rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the manufacturer’s recommended levels, typically found on a sticker in the driver’s side door jamb.

Avoid unnecessary idling. If you’re going to be stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart easily, and restarting consumes less fuel than idling for extended periods.

Keep up with routine maintenance. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug replacements.