86 MPG combined is a head-turning figure, meaning very low running costs for the 2025 BMW iX xDrive40 with 20-inch wheels. This isn’t your average economy car; it’s a luxury electric SUV made for someone who wants both lower fuel costs and BMW’s driving experience. Acceptable range is expected, but efficiency completes the picture for the customer.

City and highway performance

The iX xDrive40 excels in cities, achieving an EPA-estimated 87 MPG. Regenerative braking is largely responsible, allowing the iX to recoup energy during stops and starts. Highway driving yields a slightly lower, but still remarkable, 85 MPG. Even at higher speeds, the iX maintains its efficiency, thanks to aerodynamic design and a carefully calibrated electric powertrain. This near-identical city/highway split shows the vehicle’s inherent energy efficiency, not relying solely on low-speed regen.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 BMW iX xDrive40 at $900. This figure is based on driving 15,000 miles per year, with a percentage of those miles driven in city versus highway conditions, and relies on national average electricity prices. Individual costs may vary based on electricity rates and driving habits, the $900 provides a solid benchmark for understanding the potential savings of driving an electric vehicle.

Real-world expectations

While EPA ratings provide a standardized benchmark, real-world MPG for the iX xDrive40 can change. Hard acceleration, frequent climate control, and high-speed driving will impact efficiency. However, drivers who accelerate smoothly, pre-condition the cabin while plugged in, and maximize regenerative braking can often meet or exceed the EPA estimates. The iX is user-friendly, drivers can actively participate in optimizing their energy consumption.

How it compares

The luxury electric SUV segment is growing more competitive. The Audi e-tron, for example, achieves a combined MPG of 78. While providing a similar premium experience, the e-tron isn’t as efficient as the iX. The Tesla Model X achieves a combined MPG of 102, a more efficient vehicle, but the BMW’s interior and build quality gives the iX xDrive40 an advantage to some buyers. When considering the Cadillac LYRIQ, with its EPA rating of 92 MPG, the competition is close. The iX xDrive40 appeals to drivers seeking a “BMW” driving experience than the LYRIQ offers. Buyers should evaluate IX MPG across all years to get a sense of powertrain developments.

Tips to maximize efficiency

Take advantage of regenerative braking settings. The iX offers adjustable regenerative braking levels, from coasting to one-pedal driving. Experiment to find the setting that best suits your driving style and maximizes energy recuperation. The “B” mode on the gear selector provides maximum regen.

Pre-condition the cabin while plugged in. Using the BMW Connected app, you can pre-heat or pre-cool the cabin while the vehicle is still connected to the charger. This uses grid electricity rather than battery power, saving energy during your drive.

Drive smoothly and anticipate traffic. Avoiding sudden acceleration and braking enhances safety and improves efficiency. Look ahead, anticipate traffic flow, and maintain a consistent speed whenever possible.

Monitor energy consumption. The iX provides real-time energy consumption data on the infotainment screen. Pay attention to these readings to identify driving habits that negatively impact efficiency and adjust accordingly. All Bmw fuel economy data shows that electric vehicles tend to be very sensitive to driving behavior.

Keep tires properly inflated. Underinflated tires increase rolling resistance, reducing efficiency. Check your tire pressure regularly and maintain the recommended pressure specified on the doorjamb label.