24 MPG combined won’t win any hypermiling contests, but it’s the price of admission for open-top motoring with all-weather confidence and a smooth inline-six. The 2017 BMW 440i xDrive Convertible isn’t bought by penny-pinchers. It’s acquired by those who appreciate a blend of performance, luxury, and the ability to drop the top on a whim. The fuel economy, while not stellar, is simply a background consideration for the driving experience it delivers.

City and highway performance

The EPA estimates for the 440i xDrive Convertible break down to 20 MPG in the city and 30 MPG on the highway. The city figure reflects the stop-and-go reality where the engine labors more, the turbocharger is less frequently engaged, and the inherent inefficiencies of urban driving take their toll. The highway rating shines brighter, benefiting from the engine’s ability to cruise efficiently. The eight-speed automatic transmission plays a critical role, ensuring the engine remains in its sweet spot for fuel conservation. Achieving those numbers is dependent on a driver who remembers that efficiency is even possible in such a sporty vehicle.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 BMW 440i xDrive Convertible at $2,400. This calculation is based on driving 15,000 miles per year and using national average fuel prices. This number offers a standardized benchmark for comparing the fuel expenses of different vehicles. Of course, your actual fuel costs will vary based on your driving habits, the type of fuel you purchase, and local fuel prices. The $2,400 figure provides a reasonable starting point for budgeting.

Real-world expectations

While the EPA estimates are a good starting point, real-world MPG for the 440i xDrive Convertible is highly variable. Drivers who frequently exploit the engine’s power will likely see numbers closer to the city rating, even on the highway. Those with a lighter foot and a focus on smooth, consistent driving might achieve results closer to or even slightly exceeding the highway estimate. Cold weather and the use of winter tires can noticeably reduce fuel economy, especially in a car with all-wheel drive. Drivers who check out 440I MPG across all years often say the EPA number is optimistic.

How it compares

Compared to its rivals, the 440i xDrive Convertible lands in the middle of the pack. The Mercedes-Benz C300 Cabriolet, with its turbocharged four-cylinder engine, achieves slightly better fuel economy around 25 MPG combined. Meanwhile, the Audi S5 Cabriolet, boasting a more potent turbocharged V6, delivers similar fuel economy near the 440i’s 24 MPG, but with a noticeable bump in performance. A Lexus RC 350C comes in close to the 440i numbers. The 440i buyer often prioritizes the balance of power, handling, and prestige that the BMW badge carries, understanding that it comes with a certain fuel cost. These buyers might check all Bmw fuel economy data to confirm this.

Tips to maximize efficiency

Use the “Eco Pro” driving mode whenever possible. This mode adjusts throttle response, shift patterns, and even climate control settings to prioritize fuel efficiency. While it might slightly dampen the driving experience, it can make a noticeable difference over time, especially during longer highway drives.

Avoid aggressive acceleration and braking. The 440i’s turbocharger delivers a satisfying surge of power, but each burst of acceleration guzzles fuel. Smooth, gradual acceleration and anticipating traffic patterns will help keep fuel consumption in check.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more gas. Check your tire pressures regularly and inflate them to the recommended levels, found on the driver’s side doorjamb.

Minimize idling. Letting the engine idle for extended periods wastes fuel. If you’re stopped for more than a minute, turn off the engine. The 440i’s engine start/stop system can aid in this, but be mindful of its engagement in heavy traffic.

Consider the effects of premium fuel. While the 440i is designed to run on premium fuel, using a lower octane fuel could theoretically impact fuel economy, though perhaps negligibly. Sticking with the manufacturer’s recommendation of premium fuel ensures optimal engine performance and efficiency.