The 2017 BMW X4 M40i’s 21 MPG combined fuel economy rating isn’t a highlight, and it’s probably not why people buy this car. The X4 M40i occupies a unique niche: a stylish, coupe-like crossover that prioritizes looks and performance over practicality. Buyers looking at this car know that higher fuel consumption comes with the territory when you want an M-tuned suspension, a potent turbocharged inline-six, and the striking visual the X4 M40i offers.

City and highway performance

EPA estimates of 19 MPG in the city and 26 MPG on the highway show the X4 M40i’s conflicting traits. In the city, the enthusiastic turbocharged engine and the automatic transmission’s responsiveness lower the city MPG. The X4 M40i invites spirited driving, which hurts fuel consumption. However, out on the highway, the inline-six’s efficiency and the eight-speed automatic’s high-gear cruising deliver fairly decent mileage. Still, you might find yourself using the engine’s power and sacrificing fuel savings.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 BMW X4 M40i at $2,750. This includes driving 15,000 miles per year and using the EPA’s estimate of national average fuel prices. Because the X4 M40i requires premium fuel, this annual cost could increase if gas prices rise. This is a significant cost that potential buyers should consider. The need for premium fuel increases the cost at the pump.

Real-world expectations

The EPA provides standardized figures, but real-world fuel economy changes based on driving habits, traffic, and the season. Expect slightly lower numbers than the EPA estimates if you often use the engine’s full power or drive in stop-and-go traffic. On the other hand, careful highway driving may produce numbers close to, or even above, the 26 MPG highway figure. As always, driving style matters.

How it compares

The X4 M40i’s fuel economy is about average for performance crossovers. The Porsche Macan S, with its turbocharged V6, gets similar numbers, around 17 MPG city and 23 MPG highway. The Mercedes-AMG GLC 43 Coupe, a direct competitor, is in the same range. For those wanting efficiency without giving up luxury, the Lexus NX 300h hybrid achieves 31 MPG combined, but performance suffers. Even X4 MPG across all years has stayed relatively similar. Buyers in this niche often accept fuel economy compromises for the X4 M40i’s performance and styling. You can compare to other BMWs on all Bmw fuel economy data.

Tips to maximize efficiency

Use the X4 M40i’s driving modes. “Eco Pro” mode adjusts the throttle response and shift points to save fuel. It may reduce the driving excitement, but it can noticeably improve fuel consumption, especially on long highway drives.

Drive smoothly and consistently. Avoid fast acceleration and hard braking, which waste fuel. Look ahead and try to keep a steady speed. This is hard when you want to hear the engine, but being mindful can help.

Keep tires properly inflated. Underinflated tires increase rolling resistance, reducing fuel economy. Check tire pressures regularly and inflate them to the recommended levels on the driver’s side doorjamb sticker.

Reduce weight. Extra cargo in the X4 M40i adds weight, making the engine work harder and use more fuel. Remove unnecessary items from the vehicle to improve efficiency.