25 MPG combined isn’t going to win any hypermiling awards, but it’s a surprisingly palatable number for a mid-size luxury SUV with the torque of a freight train. The 2017 BMW X5 xDrive 35d isn’t about outright fuel sipping; it’s about delivering effortless performance and all-weather confidence without completely emptying your wallet at the pump. This oil-burning X5 appeals to drivers who need space, appreciate German engineering, and prioritize a refined driving experience over chasing the highest possible MPG figure.

City and highway performance

The EPA estimates the 2017 BMW X5 xDrive 35d at 23 MPG in the city and 29 MPG on the highway. That spread reflects the nature of the diesel engine. The abundant low-end torque means you’re rarely pushing the engine hard around town, resulting in reasonable urban economy. On the open road, the torquey diesel coupled with the smooth-shifting eight-speed automatic allows for relaxed cruising, rewarding drivers with near-30 MPG efficiency. The xDrive all-wheel-drive system adds a layer of security in adverse conditions, but also introduces some weight, impacting fuel economy by a small amount versus a rear-wheel-drive variant (which was not offered on the diesel).

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 BMW X5 xDrive 35d at exactly $2,250. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that diesel prices can fluctuate significantly, and your actual costs will depend on your driving habits and the prevailing fuel prices in your area. However, the $2,250 estimate provides a useful benchmark when comparing running costs to other vehicles in this class. You can see X5 MPG across all years to understand how the fuel economy changed.

Real-world expectations

While the EPA figures provide a good starting point, real-world MPG will vary depending on your driving style and conditions. Owners who primarily drive short distances in stop-and-go traffic will likely see figures closer to the city rating, while those who spend more time on the highway can expect to approach, or even exceed, the 29 MPG highway estimate. Aggressive driving, carrying heavy loads, and using accessories that draw significant power from the engine (like air conditioning on full blast) will all impact fuel efficiency. Regular maintenance, especially tire inflation and filter replacements, is important to maintaining optimal MPG.

How it compares

The 2017 X5 xDrive 35d’s fuel economy holds up reasonably well against its competitors, though some alternatives offer better figures. The gasoline-powered X5 xDrive35i, for example, manages around 20 MPG combined, making the diesel a more economical choice for drivers covering longer distances. The Acura MDX, a popular three-row SUV, achieves around 22 MPG combined, appealing to buyers who prioritize fuel efficiency over the X5’s sharper handling and more luxurious interior. A comparable Audi Q7 with its gasoline engine, scores around 21 MPG. These slight MPG differences can be a key point for the type of buyer looking at all Bmw fuel economy data. The X5 35d provides a blend of performance, luxury, and relatively frugal fuel consumption, making it an option if you want a diesel.

Tips to maximize efficiency

Take advantage of the X5’s Eco Pro mode. This setting remaps the throttle response, adjusts the shift points, and reduces the power consumption of certain accessories. While it might slightly dull the driving experience, it can noticeably improve your fuel economy, especially on longer trips.

Monitor your tire pressure. Regularly check and maintain the recommended tire pressure, which is usually found on a sticker inside the driver’s side door jamb. Underinflated tires increase rolling resistance, which reduces fuel efficiency.

Minimize idling. Diesel engines, including the one in the X5 35d, consume fuel even when stationary. Avoid unnecessary idling, especially in cold weather. Modern diesel engines warm up quickly under load, so simply driving gently is more efficient than letting it sit and idle.

Drive smoothly and anticipate traffic. Avoid aggressive acceleration and braking, which significantly reduce fuel economy. Maintain a steady speed and try to anticipate traffic flow to minimize the need for sudden stops and starts. Use cruise control on the highway when appropriate.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and fuel filter replacements are all crucial for maintaining optimal engine performance and fuel efficiency. A well-maintained engine will always be more efficient than one that is neglected.