A combined 24 MPG won’t break any records, but for the 2018 BMW X5 xDrive40e, it reflects a compromise. This plug-in hybrid version of the X5 targeted buyers wanting BMW’s driving experience with less gas. This vehicle is made for affluent suburbanites who desire the status of a BMW, the practicality of an SUV, and the ability to drive quietly through their neighborhood on electric power, at least for short distances.

City and highway performance

The EPA estimates for the 2018 X5 xDrive40e are 23 MPG in the city and 25 MPG on the highway. The city figure is lower than the highway because many owners will likely use the electric motor significantly in urban driving, then use the gasoline engine at constant speeds on the highway. The turbocharged 2.0-liter four-cylinder engine works with an electric motor, which helps overall fuel efficiency. Owners who diligently plug in and maximize electric-only driving will see much better results. Those who treat it as a conventional hybrid will get numbers closer to the EPA estimates. The eight-speed automatic transmission generally keeps the engine in its best range, but aggressive driving will quickly negate any attempts at saving fuel. To see detailed X5 MPG across all years, check our model page.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 BMW X5 xDrive40e at exactly $2,400. This is based on driving 15,000 miles per year and using national average fuel prices. Remember that this is only an estimate. Your actual fuel costs will vary based on your driving habits, the type of fuel, and where you live, since fuel prices change from state to state. If you drive fewer miles or mostly use electric-only operation, you’ll spend less. However, consistent highway driving with little charging will likely increase your annual fuel bill.

Real-world expectations

While the EPA numbers provide a baseline, fuel economy for the X5 xDrive40e can vary quite a bit. How much owners use the plug-in capability is the key. Drivers who regularly charge the battery and primarily use the vehicle for short commutes can see much better fuel economy, potentially exceeding 30 MPG for weeks. But those who don’t plug in or frequently take long trips will experience fuel consumption closer to a traditional gasoline-powered SUV. Expect anything between 20 and 30 MPG depending on your habits.

How it compares

The X5 xDrive40e competed with other luxury SUVs offering hybrid or plug-in hybrid powertrains. For example, the Volvo XC90 T8 plug-in hybrid offered similar luxury and efficiency, with an EPA-estimated combined rating of 27 MPG, better than the BMW. The Porsche Cayenne E-Hybrid offered more performance with similar efficiency, but was generally more expensive. The Lexus RX 450h, a traditional hybrid, had a higher 30 MPG combined, appealing to buyers who valued fuel economy over sporty driving. These comparisons matter to the X5 xDrive40e buyer because they are affluent, educated, and can afford to be selective about the efficiency and character of a vehicle. This buyer might also be interested in viewing all Bmw fuel economy data.

Tips to maximize efficiency

Fully use the plug-in hybrid system by plugging in whenever possible. Even a partial charge can reduce gasoline consumption, especially during city driving. Make it a habit to plug in at home overnight and use public charging stations when available to maximize electric-only mileage.

Use the BMW’s driving modes strategically. Selecting “Eco Pro” mode optimizes vehicle settings to save fuel, including throttle response and transmission behavior. Learn about the different modes and choose the one that best suits your driving.

Gentle acceleration and braking are key to saving fuel. Avoid hard acceleration and aggressive braking, as these actions consume more energy. Anticipate traffic flow and maintain a steady speed when you can. Regenerative braking helps recapture energy and recharge the battery, improving efficiency.

Keep your tires properly inflated and ensure regular maintenance. Underinflated tires increase rolling resistance, reducing fuel economy. Regular maintenance, like oil changes and filter replacements, ensures that your engine runs efficiently. A well-maintained vehicle is more efficient.