24 MPG combined isn’t going to win any hypermiling contests, but for the 2017 BMW 440i Convertible, it’s a perfectly acceptable trade-off for the performance and top-down driving experience it offers. This isn’t a car bought for maximizing fuel efficiency, it’s bought for enjoying a potent engine, responsive handling, and the open road. The fuel economy simply needs to be reasonable enough not to be a constant source of annoyance.

City and highway performance

The EPA estimates suggest 21 MPG in the city and 29 MPG on the highway. These figures reflect the dual nature of the 440i. City driving, characterized by frequent stops and starts, naturally takes a toll, but even then, 21 MPG is respectable for a car with this level of power. On the open highway, the efficient eight-speed automatic transmission allows the engine to cruise at lower RPMs, squeezing out closer to 30 MPG if you resist the urge to constantly dip into the throttle. A reasonable driver will see numbers very close to these EPA ratings, depending on driving style.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2017 BMW 440i Convertible is $2,400. This calculation is based on driving 15,000 miles per year and uses the national average fuel price at the time of the EPA’s testing. Naturally, your actual fuel cost will vary depending on how much you drive and the price of gasoline in your area. However, the $2,400 figure provides a useful benchmark for comparing the 440i’s running costs to those of other vehicles. For the typical 440i Convertible buyer, this number will be less important than other considerations when compared to the fuel efficiency numbers of other vehicles.

Real-world expectations

While the EPA estimates provide a standardized measure, real-world fuel economy depends heavily on individual driving habits and conditions. Owners who primarily drive in stop-and-go traffic or have a penchant for aggressive acceleration will likely see figures closer to the lower end of the EPA’s range, perhaps even dipping below 20 MPG in the city. Conversely, those who primarily drive on the highway with a gentle foot can comfortably achieve, or even slightly exceed, the EPA’s 29 MPG estimate. The key to maximizing fuel efficiency in the 440i Convertible is to adopt a smooth, consistent driving style, avoiding sudden acceleration and braking.

How it compares

Compared to its competitors, the 2017 BMW 440i Convertible’s fuel economy is competitive, though not class-leading. For example, the Audi A5 Cabriolet with its 2.0-liter turbo engine achieves around 24 MPG combined, similar to the BMW. The Mercedes-Benz C300 Cabrio achieves around 25 MPG combined, slightly better. These differences reflect the trade-offs between performance and efficiency. Buyers should consider which of these is more important to them. For someone prioritizing ultimate fuel economy, the Mercedes C300 Convertible might be the better choice. However, for those seeking a balance of performance and reasonable efficiency, the 440i, which has a more powerful engine than both, makes a strong case against the 440I MPG across all years.

Tips to maximize efficiency

Take advantage of the 440i’s driving modes. Selecting “Eco Pro” mode optimizes the engine and transmission settings for maximum fuel efficiency. This mode reduces throttle response and adjusts shift points to keep the engine operating in its most efficient range. It’s perfect for longer highway drives or city commutes when performance isn’t a top priority.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the recommended pressure specified on the doorjamb sticker. This small adjustment can make a noticeable difference over time.

Avoid unnecessary weight. Carrying extra cargo in your trunk adds weight to the vehicle, which increases fuel consumption. Remove any unnecessary items to reduce the load on the engine. Even a few extra pounds can impact fuel efficiency, especially in city driving.

Anticipate traffic flow. By looking ahead and anticipating changes in traffic speed, you can avoid unnecessary acceleration and braking. Maintaining a consistent speed reduces fuel consumption. Practice smooth, progressive acceleration as you begin from stops.

Consider the 440i’s maintenance schedule carefully. Regular maintenance, like proper oil changes and air filter replacements, ensures that all car components are in good running order. If the car is not running as it was originally intended, this will surely impact fuel economy over time. See all Bmw fuel economy data if you are curious about other BMW models.