BMW · 2015
X6 sDrive35i 3.0L 6-cyl
✓ EPA Verified
Premium Gasoline
Standard Sport Utility Vehicle 2WD
Rear-Wheel Drive
City
19
MPG
Combined
22
MPG
Highway
27
MPG
Annual Fuel Cost
$2,650
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$500
more per year
Class Comparison — Standard Sport Utility Vehicle 2WD
Top 35%
Better than 65 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 22 MPG
This vehicle
22 MPG
Class average
25 MPG
Class lowest
15 MPG
EPA Energy & Environment Scores
5
Energy Score
Out of 10
5
GHG Score
Out of 10
412 lbs
Annual CO₂
g/mile tailpipe CO₂
Yes
Start-Stop
Auto stop-start
Vehicle Specifications
Engine3.0L 6-cyl
TransmissionAutomatic (S8)
DriveRear-Wheel Drive
Fuel TypePremium Gasoline
Vehicle ClassStandard Sport Utility Vehicle 2WD
Engine DescSIDI
Start-StopYes
EPA Vehicle ID35519

The 2015 BMW X6 sDrive35i gets 22 MPG combined. To be frank, if fuel efficiency was your primary concern, you wouldn’t be shopping for a sharply styled, coupe-like SUV with a potent turbocharged inline-six. This vehicle is bought for its distinctive design, sporty driving dynamics, and a certain undeniable road presence; it’s not bought for setting any hypermiling records. The X6 buyer prioritizes style and performance and accepts the fuel costs that come with those benefits.

City and highway performance

The X6 sDrive35i delivers an EPA-estimated 19 MPG in city driving. Stop-and-go traffic and the engine’s eagerness to rev certainly contribute to that number, but it isn’t terribly low compared to other vehicles of similar size and power. The highway figure of 27 MPG is more respectable, making it a decent long-distance cruiser for those who enjoy spirited driving on open roads. The smooth-shifting 8-speed automatic transmission keeps the engine in its optimal range, both for performance and economy, but the engine’s inherent thirst ultimately dictates the results.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 BMW X6 sDrive35i at $2,650. This figure is based on driving 15,000 miles per year and using the national average fuel price for the type of fuel the vehicle requires. It’s a useful benchmark for understanding how much this X6 will impact your budget, but your actual costs will vary based on your driving habits, local fuel prices, and the specific type of driving you do.

Real-world expectations

While the EPA estimates provide a good baseline, real-world MPG often differs. Aggressive driving, frequent short trips, and even tire pressure can all impact your fuel economy. Owners who prioritize performance and enjoy the engine’s power are likely to see figures closer to the city estimate, or even slightly below. Conversely, those who focus on smooth acceleration and consistent highway speeds might achieve figures closer to, or possibly even exceeding, the 27 MPG highway estimate. Monitoring your own fuel consumption over time, using the trip computer, is the best way to understand what to expect from your X6.

How it compares

Compared to other vehicles in its class and price range, the 2015 BMW X6 sDrive35i’s fuel economy falls somewhere in the middle. The Mercedes-Benz GLE 350 Coupe, for example, achieves a similar 18 MPG city and 24 MPG highway. This comparison highlights that stylish coupe-like SUVs generally sacrifice some efficiency. The Audi Q7, a more traditional SUV, manages about 19 MPG city and 25 MPG highway, offering a slightly improved combined figure. Of course, if you are willing to forgo the sporty styling of the X6, you could achieve significantly better fuel economy with a more conventional SUV or a hybrid alternative.

Tips to maximize efficiency

Take advantage of the X6’s driving modes. Selecting “Eco Pro” mode will remap the throttle response, adjust the transmission’s shift points, and even reduce the energy consumption of some auxiliary systems. While it might slightly dampen the car’s performance, it can lead to noticeable fuel savings, especially on longer journeys.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, forcing the engine to work harder and consuming more fuel. Refer to the sticker on the driver’s side doorjamb for the recommended tire pressure for your X6.

Avoid unnecessary idling. If you’re stopped for more than a minute, turn off the engine. Modern engines are designed to be restarted frequently without causing excessive wear, and idling burns fuel without moving the vehicle.

Use cruise control on the highway whenever possible. Maintaining a consistent speed minimizes unnecessary acceleration and braking, leading to improved fuel efficiency. Find all Bmw fuel economy data for more efficiency options, and see X6 MPG across all years for similar models.