BMW · 2023
X6 M50i 4.4L 8-cyl
✓ EPA Verified
Premium Gasoline
Standard Sport Utility Vehicle 4WD
All-Wheel Drive
City
16
MPG
Combined
18
MPG
Highway
22
MPG
Annual Fuel Cost
$3,200
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$1,050
more per year
Class Comparison — Standard Sport Utility Vehicle 4WD
Bottom 32%
Better than 32 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 18 MPG
This vehicle
18 MPG
Class average
27 MPG
Class lowest
11 MPG
EPA Energy & Environment Scores
4
Energy Score
Out of 10
4
GHG Score
Out of 10
486 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine4.4L 8-cyl
TransmissionAutomatic (S8)
DriveAll-Wheel Drive
Fuel TypePremium Gasoline
Vehicle ClassStandard Sport Utility Vehicle 4WD
Engine DescSIDI
Start-StopYes
EPA Vehicle ID45577

The 2023 BMW X6 M50i gets 18 MPG combined. Let’s be honest, no one buys this particular X6 variant for its frugality. They buy it for the thunderous 4.4L twin-turbo V8, the sharp handling, the distinctive coupe-like roofline, and the sheer presence it commands on the road. Fuel economy is simply the price to pay for this exclusive club of performance SUV owners, a secondary consideration at best. The M50i buyer prioritizes power and panache over saving pennies at the pump.

City and highway performance

The EPA estimates the X6 M50i at 16 MPG in the city and 22 MPG on the highway. The city figure reflects stop-and-go traffic, where the heavy SUV and its powerful engine are constantly starting and stopping, consuming significant amounts of fuel. The highway number suggests potential for slightly better efficiency on longer trips, but even then, the temptation to use the readily available power will quickly negate any attempts at hypermiling. Drive it the way it was intended, and expect values closer to the combined rating in most circumstances. The automatic (S8) transmission has been programmed to allow peak efficiency, though.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2023 BMW X6 M50i will be $3,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that premium fuel is required for optimal performance from the X6 M50i’s engine. So, costs could rise accordingly. The $3,200 figure provides a useful benchmark for comparing running costs with other vehicles, but individual fuel expenses will ultimately vary based on driving habits, local fuel prices, and the amount of time spent behind the wheel.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world MPG for the X6 M50i will depend heavily on driving style and usage patterns. Aggressive acceleration, frequent short trips, and extended idling will all negatively impact fuel economy. Conversely, consistent highway cruising at moderate speeds can yield figures closer to the EPA’s 22 MPG estimate. However, the X6 M50i is not designed for eco-minded driving; its primary mission is performance. Owners who prioritize fuel efficiency above all else are simply buying the wrong vehicle. Refer to all Bmw fuel economy data to decide for youself.

How it compares

The X6 M50i isn’t competing against fuel sippers. For example, the Mercedes-Benz GLE 450 Coupe, with its inline-six engine, achieves a slightly better 20 MPG combined. The Porsche Cayenne Coupe S posts an 18 MPG combined and the Audi SQ8 comes in at just 17 MPG combined. The X6 M50i’s figures are in line with its direct competitors. Buyers in this segment are typically less concerned with squeezing every last mile from a gallon of fuel and more focused on factors like power, handling, and luxury features. See the X6 MPG across all years to get a sense of longer term data.

Tips to maximize efficiency

While fuel economy might not be a top priority, there are still ways to conserve fuel in the X6 M50i. Avoid unnecessary idling. The twin-turbo V8 burns a considerable amount of fuel when the vehicle is stationary, so minimizing idling time can make a noticeable difference, especially in city driving.

Use the ECO PRO driving mode when appropriate. This mode adjusts throttle response and shift patterns to prioritize fuel efficiency. While it does reduce performance, it’s a useful option for highway cruising or situations where maximum power is not required. Be realistic about performance expectations and drive reasonably in ECO PRO mode.

Ensure correct tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressures regularly and inflate them to the recommended levels, found on the door jamb sticker. Doing so will also increase tire life and improve vehicle handling.

Optimize aerodynamics. Remove any unnecessary roof racks or cargo carriers, as these increase drag and reduce fuel efficiency, particularly at highway speeds. Keep windows closed at higher speeds to minimize wind resistance. Avoid transporting items on top of the vehicle unless absolutely necessary.

Combine trips. Starting a cold engine consumes more fuel compared to continuing a journey. When possible, consolidate errands into a single trip to reduce the number of cold starts. This small change can have a cumulative effect on fuel consumption over time, especially if you’re exclusively driving in the city.