23 MPG combined should not be the primary selling point for the 2020 BMW X4 M40i. This vehicle exists to deliver a specific blend of performance and style. Its unconventional coupe-like roofline carves a distinct silhouette on roadways, and the M40i trim unleashes a potent 382-horsepower turbocharged inline-six engine. Buyers drawn to this particular X4 variant aren’t prioritizing ultimate fuel efficiency; they seek invigorating acceleration and confident handling, wrapped in a package that stands out from the ubiquitous luxury SUV crowd. They accept the fuel consumption as a trade-off for the driving experience.

City and highway performance

The EPA estimates the X4 M40i will achieve 21 MPG in the city and 27 MPG on the highway. These figures reflect the realities of stop-and-go traffic and sustained high-speed cruising, respectively. The city number reflects the engine working harder to accelerate the vehicle from a standstill, while the highway number benefits from more consistent speeds and the engine operating within its most efficient range. The eight-speed automatic transmission (S8) also contributes to maximizing fuel economy on the open road. This transmission keeps the engine in its sweet spot, optimizing power delivery and efficiency as needed.

Annual fuel cost

Based on the EPA’s estimates, the annual fuel cost for the 2020 BMW X4 M40i is $2,500. This calculation assumes 15,000 miles driven per year, using national average fuel prices. Keep in mind that this is merely an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use (premium fuel is recommended for optimal performance), and prevailing fuel prices in your area. Aggressive driving with frequent bursts of acceleration will inflate this number; gentle, consistent driving will lower it.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy often deviates. The X4 M40i’s performance-oriented character makes it particularly susceptible to variations based on driving style. Someone who frequently uses the engine’s power will likely see figures closer to the lower end of the EPA range, or even slightly below. Conversely, drivers who adopt a more measured approach can expect to achieve numbers near or even slightly above the EPA estimates. Terrain also plays a role; hilly or mountainous areas will generally decrease fuel economy.

How it compares

Compared to other vehicles in its class, the X4 M40i’s fuel economy lands somewhere in the middle. The Porsche Macan S, another performance-oriented compact SUV, achieves a similar 22 MPG combined. Opting for a more practical, but less sporty, SUV like the Acura RDX returns a slightly better 24 MPG combined. Even the more pedestrian BMW X3 with the base engine manages 25 MPG combined. For those prioritizing efficiency, a hybrid option like the Lexus NX 300h achieves a significantly better 31 MPG combined, although sacrificing a good deal of performance in the process. Ultimately, the X4 M40i’s target buyer knows they’re choosing performance over outright efficiency. Find all Bmw fuel economy data here and compare X4 MPG across all years.

Tips to maximize efficiency

While the X4 M40i prioritizes performance, there are still ways to optimize fuel consumption without sacrificing too much driving enjoyment. Avoid aggressive acceleration and braking. The turbocharged engine responds readily to even slight throttle inputs, so modulate your acceleration smoothly to minimize fuel wastage during those initial bursts.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressures regularly and inflate them to the recommended levels listed on the sticker inside the driver’s side doorjamb.

Take advantage of the driving modes. The X4 M40i offers various drive modes, including an “Eco Pro” mode designed to maximize fuel efficiency. This mode adjusts engine mapping and throttle response to encourage more economical driving habits.

Reduce unnecessary weight. Carrying extra cargo adds weight and increases fuel consumption. Remove any unnecessary items from the vehicle to minimize the load on the engine. Even small reductions in weight can contribute to improved fuel efficiency over time.

Plan your trips strategically. Combining errands into a single trip minimizes cold starts, which consume more fuel. Also, avoid peak traffic times whenever possible, as stop-and-go driving is detrimental to fuel economy.