The 2018 Cadillac XT5 AWD with the 3.6L V6 gets 21 MPG combined. This places it in the middle of the luxury SUV segment, a reasonable compromise for buyers who want a comfortable, capable, and stylish vehicle more than the best fuel savings. The XT5 isn’t trying to be the thriftiest choice; it’s aiming for transportation with the added security of all-wheel drive.

City and highway performance

The EPA estimates the 2018 Cadillac XT5 AWD fuel economy at 18 MPG in the city and 25 MPG on the highway. The city figure reflects stop-and-go traffic, idling, and lower speeds, all of which impact fuel consumption. The XT5’s 3.6-liter V6 needs to work harder in these conditions. On the open road, the 25 MPG highway rating is more achievable because speeds are consistent, and the eight-speed automatic transmission settles into its higher, more efficient gears. Drivers who spend most of their time on the highway will likely see fuel economy closer to 25 MPG. For those primarily navigating city streets, expect something closer to 18 MPG.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Cadillac XT5 AWD is $2,100. This is based on driving 15,000 miles per year and using national average fuel prices. It’s a useful benchmark for comparing running costs with other vehicles, but individual expenses will vary based on driving habits, local fuel prices, and the type of fuel used. For example, aggressive driving or consistent use of premium fuel will increase this cost, while conservative driving and lower local fuel prices can decrease it.

Real-world expectations

The EPA provides a standardized testing process, but real-world fuel economy depends on many factors. Terrain, driving style, weather conditions, and even tire pressure can all influence MPG. Owners of the 2018 Cadillac XT5 AWD often report fuel economy that fluctuates somewhat around the EPA estimates. Careful drivers who prioritize smooth acceleration and consistent speeds frequently achieve numbers closer to the EPA highway rating, especially on longer trips. However, those who enjoy the XT5’s available power or live in hilly areas may see lower figures.

How it compares

The Cadillac XT5’s fuel economy compares differently against its key competitors. For example, the Acura RDX with its 2.0-liter turbocharged engine achieves 23 MPG combined. The Lexus RX 350, another popular choice, comes in at 22 MPG combined, a slight edge over the XT5. The BMW X3 xDrive30i is rated at 24 MPG combined. These numbers are important for buyers cross-shopping in this segment, especially those who are willing to sacrifice some performance or interior space for better fuel efficiency. Potential owners might also compare XT5 MPG across all years to spot any generational differences that might impact the purchase decision.

Tips to maximize efficiency

Use the XT5’s drive mode selector. The “Tour” mode optimizes fuel economy by adjusting throttle response and transmission shift points for smoother, more efficient driving. Sport mode prioritizes performance and will negatively impact MPG.

Make sure your tires are properly inflated and regularly maintained. Underinflated tires increase rolling resistance, forcing the engine to work harder. See the sticker on the driver’s side doorjamb for the recommended tire pressure.

Avoid excessive idling. If you anticipate sitting for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, making this a simple way to conserve fuel. Idling in a model with a V6 engine wastes gas.

Gradual acceleration and smooth braking are key. Avoid “jackrabbit” starts and hard stops, as these actions consume more fuel and wear down brake components. Anticipate traffic flow and maintain a consistent speed whenever possible.

Keep up with scheduled maintenance. Regular oil changes, air filter replacements, and other preventative measures ensure that the engine is running efficiently. Neglecting maintenance can lead to decreased performance and reduced fuel economy. Consider browsing all Cadillac fuel economy data to see how the XT5 compares to other models in the Cadillac lineup.