24 MPG combined won’t set any records, but for a plug-in hybrid BMW X5, it’s respectable. The xDrive40e is for buyers who want a BMW SUV’s appeal and driving experience, plus some electric-only driving to use less gas and lower running costs. These buyers are often less concerned with fuel economy than the idea of efficiency.

City and highway performance

The EPA numbers for the 2017 BMW X5 xDrive40e show plug-in hybrids’ city MPG (23) isn’t much lower than its highway MPG (25). This shows the electric motor’s contribution. In city traffic, the electric motor is more important, reducing gasoline use, while on the highway, the gasoline engine does more work. The automatic transmission (S8) keeps the engine in its best range, for highway cruising. The EPA cycle is a standardized test; driving habits affect both city and highway fuel economy.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,400 for the 2017 BMW X5 xDrive40e. This is based on driving 15,000 miles per year and using average fuel prices. It’s a benchmark, but your costs may vary based on driving style, local fuel costs, and electric-only driving. The calculation assumes you use gasoline for most miles, so electric range is key to reducing this cost.

Real-world expectations

The EPA numbers offer a baseline, but X5 xDrive40e drivers often report different fuel economy. Those who charge the battery and use electric driving for short trips can exceed the EPA’s combined MPG. Drivers who don’t charge and use the gasoline engine may see fuel economy closer to the standard X5 with its larger gasoline engine. The xDrive40e’s MPG depends on how it’s used. Exploring X5 MPG across all years can show how different powertrains affect it. Colder temperatures can reduce electric range, decreasing fuel economy.

How it compares

The 2017 BMW X5 xDrive40e has a unique spot among luxury SUVs. The non-hybrid X5 variants offer similar or slightly worse fuel economy, typically in the low- to mid-20s combined. For example, the X5 sDrive35i (RWD) is rated at 21 MPG combined. The Volvo XC90 T8 plug-in hybrid is a direct competitor, with a higher combined MPG of 27, but it costs more. The Acura MDX Sport Hybrid gets 27 MPG combined, emphasizing fuel efficiency over luxury. BMW buyers often trade a few MPGs for the brand’s driving dynamics, interior, and technology. You can find all Bmw fuel economy data on our site.

Tips to maximize efficiency

Use the X5 xDrive40e’s electric capabilities to improve fuel economy. Plug in your car whenever possible, even briefly, to charge the battery. This allows more electric-only miles and less gasoline use, especially in city driving.

Use the Driving Dynamics Control system to select “Eco Pro” mode, especially on long highway trips. This mode optimizes the powertrain and car systems for efficiency by reducing throttle response and adjusting climate control.

Drive smoothly. Avoid aggressive acceleration and braking, which use more energy from the gasoline engine or electric motor. Anticipating traffic and maintaining speed can improve fuel economy.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure and inflate them to the levels on the door jamb sticker.

Use accessories that consume much energy, like air conditioning and heated seats, sparingly. These draw power from the battery, reducing electric range, and force the gasoline engine to work harder.