While 22 MPG combined likely isn’t the main reason for buying a 2018 Cadillac XT5 with the 3.6L V6, this luxury crossover targets buyers who prioritize style, comfort, and prestige. Fuel economy is a consideration, but it’s secondary to emotional factors. The XT5 buyer appreciates the 310 horsepower and refined driving experience and accepts a middling MPG as a compromise.

City and highway performance

The EPA estimates the 2018 Cadillac XT5 3.6L at 19 MPG in the city and 26 MPG on the highway. This difference illustrates the engine’s characteristics and the transmission’s programming. The 8-speed automatic is geared for efficient cruising at higher speeds, letting the engine operate efficiently on the open road. In stop-and-go city driving, however, the larger engine and the vehicle’s weight cause higher fuel consumption. Expect MPG figures closer to 19 MPG in congested urban environments, especially with frequent acceleration.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Cadillac XT5 3.6L at $2,000. This is based on driving 15,000 miles per year and using the national average fuel price when the data was compiled. Remember that this is an estimate. Your actual fuel costs will vary depending on your driving habits, the type of driving you do, and the price of gasoline in your area. Aggressive driving, frequent short trips in cold weather, and consistent use of premium fuel (though not required) will all increase your real-world expenses. Consider this estimate a useful benchmark, rather than a guarantee.

Real-world expectations

The EPA figures provide a useful baseline, but real-world MPG for the 2018 Cadillac XT5 3.6L often falls slightly below those numbers. Drivers who frequently experience heavy traffic, prioritize quick acceleration, or live in hilly areas are likely to see lower MPG than advertised. But those who primarily drive on the highway and practice efficient driving techniques may meet or even exceed the EPA estimates.

Online forums and fuel tracking apps show owners reporting combined MPG figures between 19 and 24 MPG, reflecting various driving conditions and habits. Across all XT5 MPG across all years, this is one of the more common engines.

How it compares

In the competitive luxury crossover segment, the 2018 Cadillac XT5 3.6L’s fuel economy is average. The Lexus RX 350, achieves a similar 23 MPG combined. The Acura RDX, with its turbocharged 2.0L engine, manages a slightly better 24 MPG combined, appealing to buyers who want more less gas without sacrificing performance. Certain competitors like the Mercedes-Benz GLC 300 offer similar fuel economy but with a smaller, turbocharged engine.

The XT5’s MPG is part of a bigger picture. Buyers choosing the Cadillac over its rivals often prioritize its styling, features, and brand image, accepting the fuel economy as a trade-off. Always compare all Cadillac fuel economy data when making your choice.

Tips to maximize efficiency

Avoid aggressive acceleration. The 3.6L V6 delivers plenty of power, but frequent hard acceleration reduces fuel economy. Accelerate gradually and maintain a steady speed to maximize MPG. Anticipate traffic flow and maintain momentum.

Use cruise control on the highway. Maintaining a consistent speed helps the transmission settle into its most efficient gear, reducing fuel consumption. Even slight speed fluctuations can significantly impact fuel economy. Set it and forget it, safely.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Check your tire pressure regularly and inflate them to the recommended pressure listed on the sticker inside the driver’s side door. This small step can make a difference.

Minimize idling. Excessive idling wastes fuel, especially in modern vehicles with engine management systems. If you anticipate being stopped for more than a minute or two, turn off the engine. Restarting the engine consumes less fuel than idling. This is not to be confused with stop/start systems that are standard on many vehicles.

Reduce unnecessary weight. Carrying extra cargo in your vehicle increases its weight and reduces fuel economy. Remove unnecessary items from the trunk or cargo area to lighten the load. Even small amounts of extra weight can add up and decrease your MPG.