The 2025 BMW i5 xDrive40 Sedan, with the optional 21-inch wheels, gets 87 MPG combined. This isn’t a hybrid achieving this number. Instead, it represents the electric equivalent of a highly efficient gasoline engine, translating to considerable savings and a guilt-free conscience for those who prioritize electrification in their luxury sedan. The i5 xDrive40 delivers its efficiency without sacrificing the driving dynamics expected from BMW.

City and highway performance

The EPA estimates the i5 xDrive40 with 21-inch wheels at 86 MPG in the city and 87 MPG on the highway. These figures highlight a key characteristic of electric vehicles: Their efficiency tends to be more consistent across different driving environments compared to gasoline cars. Stop-and-go city driving, which often penalizes traditional internal combustion engines, allows the i5 to recover energy through regenerative braking, boosting its city MPG. The 87 MPG highway figure is equally impressive and demonstrates the car’s ability to maintain efficiency at higher speeds, making it a suitable choice for both daily commutes and longer road trips.

Annual fuel cost

The EPA estimates the annual “fuel” cost for the 2025 BMW i5 xDrive40 Sedan (21 inch Wheels) at exactly $850. This calculation is based on driving 15,000 miles per year and using the national average electricity prices. It’s crucial to understand that this figure is an estimate, and your actual costs will vary depending on your electricity rates, driving habits, and the percentage of charging you do at home versus at public charging stations. However, the $850 provides a valuable benchmark for comparing the i5’s running costs to those of gasoline-powered vehicles and other EVs. Many owners will find their actual costs even lower if they use off-peak charging rates or have access to free charging at work.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world fuel economy can vary. The 87 MPG combined figure is achievable with mindful driving habits and optimal conditions. However, aggressive acceleration, frequent use of climate control, and consistently high speeds can reduce the i5’s efficiency. The impact of temperature is also a factor; colder weather typically reduces the range of EVs. The 21-inch wheels, while aesthetically appealing, may slightly impact efficiency compared to smaller wheel options. The BMW’s energy management system provides feedback on driving efficiency and offers suggestions for optimizing energy consumption.

How it compares

The electric luxury sedan segment offers several alternatives, each with its own strengths and weaknesses in efficiency. The Tesla Model S Long Range, for example, boasts an EPA-estimated 120 MPGe combined, positioning it as a more efficient option on paper, but its price point is significantly higher. The Mercedes-Benz EQE 350+ Sedan achieves around 103 MPGe combined, slightly edging out the i5. However, the i5 delivers BMW’s signature driving dynamics and interior quality, which are primary considerations for many buyers in this segment. When compared to gasoline-powered luxury sedans, the i5’s 87 MPG is a game-changer. A BMW 540i, for instance, achieves around 27 MPG combined. This difference highlights the significant fuel savings provided by the i5, making it an appealing choice for those who want less gas in a luxury car. You can find all Bmw fuel economy data on this site. Also be sure to research the I5 MPG across all years.

Tips to maximize efficiency

Take advantage of regenerative braking. The i5 allows you to adjust the level of regenerative braking. Set it to a higher setting, especially in city driving, to maximize energy recovery and reduce wear on your brake pads.

Precondition the cabin while plugged in. Heating or cooling the cabin while the car is still plugged into the charger uses grid electricity instead of drawing power from the battery, preserving your driving range. This is especially useful in extreme temperatures.

Optimize your driving style. Smooth acceleration and steady speeds are key to maximizing efficiency in any vehicle, but even more so in an EV. Avoid aggressive acceleration and hard braking whenever possible. Use cruise control on the highway to maintain a consistent speed.

Monitor tire pressure. Properly inflated tires reduce rolling resistance and improve fuel efficiency. Check your tire pressure regularly and inflate them to the recommended level, which can be found on the doorjamb sticker.

Minimize unnecessary weight. Carrying excessive weight in your vehicle decreases efficiency. Remove any unnecessary items from the trunk or backseat to reduce the load on the powertrain.