23 MPG combined might not excite 2020 BMW 440i xDrive Convertible owners, but it comes with open-air driving, a smooth 3.0L inline-six, all-wheel drive, and classic BMW handling, a package for drivers who value the driving experience over saving gas.

City and highway performance

The EPA estimates the 2020 BMW 440i xDrive Convertible at 20 MPG in the city and 28 MPG on the highway. These figures are from controlled tests with moderately conservative driving. Expect lower city MPG, especially in stop-and-go traffic. The highway MPG is possible if you drive calmly. The all-wheel-drive system results in lower fuel economy than a rear-wheel-drive model in similar conditions. The S8 Steptronic automatic transmission, while smooth and responsive, prioritizes quick shifts and power delivery over fuel conservation.

Annual fuel cost

Expect to spend about $2,500 per year on fuel for the 2020 BMW 440i xDrive Convertible, based on EPA estimates. This assumes 15,000 miles driven per year with mixed city and highway driving, using the EPA’s national average fuel price projection. Your actual cost will depend on your driving, local fuel prices, and fuel type. Premium fuel is recommended, maximizing engine performance.

Real-world expectations

The 2020 BMW 440i xDrive Convertible encourages enthusiastic driving. Owners often report real-world fuel economy below the EPA’s combined number, closer to 20 MPG in mixed driving. Highway MPG rarely exceeds 26, especially at higher speeds. Drivers who frequently use the car’s power and acceleration will see lower numbers. This car isn’t bought for fuel efficiency. Buyers who want all Bmw fuel economy data will choose between performance and efficiency when selecting a model.

How it compares

The 440i’s fuel economy is average compared to competitors. The Audi S5 Cabriolet, with its turbocharged V6, has similar performance and slightly better real-world MPG, around 24 combined. A Mercedes-Benz C43 AMG Cabriolet, with more power, gets around 22 MPG combined. The Porsche 718 Boxster, mid-engine and two-seater, offers sporty open-air driving but better fuel economy, exceeding 25 MPG combined in its base four-cylinder form. However, those looking for 440I MPG across all years might be loyal BMW customers.

Tips to maximize efficiency

Keep tires properly inflated. The correct tire pressure, listed on the door jamb, minimizes rolling resistance and can improve fuel economy. Check them regularly, especially when the temperature changes.

Avoid idling. Modern BMW engines warm up quickly, so idling wastes fuel. Turn off the engine if you’re stopped for more than a minute.

Use cruise control on the highway. Consistent speed minimizes acceleration and deceleration, improving fuel economy. The 440i’s adaptive cruise control helps maintain smooth progress in traffic.

Drive carefully. Aggressive acceleration and braking consume fuel. Smooth inputs yield better results. Use the engine’s torque to maintain momentum without excessive throttle.

Follow scheduled maintenance. A well-maintained engine operates more efficiently. Follow BMW’s service intervals for oil changes, air filters, and other tasks to ensure the best performance and fuel economy.