The front-wheel drive 2024 Cadillac XT6 with its 3.6L V6 engine gets 21 MPG combined. It’s not going to win any hypermiling competitions, but it’s a reasonable trade-off for buyers who want space, luxury, and a comfortable driving experience more than ultimate fuel efficiency. The XT6 is for families who require three rows of seating but don’t want the size of a full-size SUV. They’re willing to trade some MPGs for the Cadillac brand, a well-appointed interior, and easier maneuvering in busy areas.

City and highway performance

The EPA estimates for the 2024 Cadillac XT6 FWD with the 3.6L V6 are 19 MPG in the city and 26 MPG on the highway. The city MPG reflects the high energy use of stop-and-go traffic. Expect even lower fuel economy if you idle often or accelerate hard. On the highway, the XT6’s shape and smooth nine-speed automatic transmission help it achieve good gas mileage. Consistent speed and gentle use of the gas pedal are important for getting that 26 MPG figure.

Annual fuel cost

The EPA says the annual fuel cost for the 2024 Cadillac XT6 FWD 3.6L is $2,100. This is based on driving 15,000 miles per year and national average gas prices. Your actual fuel costs will change depending on how you drive, whether you drive in the city or on the highway, and the price of gas where you live. Drivers who drive much more than 15,000 miles per year or who live where gas is expensive will spend more than this.

Real-world expectations

EPA estimates are a useful starting point, but real-world gas mileage often varies. Some XT6 owners report numbers close to the EPA’s, but those who often drive in city traffic or accelerate quickly may see lower numbers. Long highway trips can help some drivers exceed the 26 MPG highway rating. Tire pressure, vehicle maintenance, and cargo weight can also slightly change how much gas you use. Keep your tires inflated properly and follow the manufacturer’s maintenance schedule for the best gas mileage.

How it compares

The Cadillac XT6 is in a competitive group of mid-size luxury SUVs. Comparing it to similar vehicles shows where it stands on fuel efficiency. For example, the Acura MDX gets 19 MPG city and 26 MPG highway with front-wheel drive. The Lexus RX 350h, which is a hybrid, gets much better gas mileage at 37 MPG combined but costs more. The Volvo XC90 B5, with its turbocharged and supercharged engine, gets around 25 MPG combined. The Infiniti QX60 gets about the same as the XT6, with 21 MPG city and 26 MPG highway. If you’re thinking about the XT6, consider its luxury and features against the gas mileage of its competitors to decide what matters most to you. Explore XT6 MPG across all years to get an idea of past fuel economy.

Tips to Maximize Efficiency

Watch traffic flow and avoid sudden acceleration and braking. The XT6’s 3.6L V6 works best with gentle use of the gas pedal, and keeping a constant speed will help gas mileage a lot. Driving aggressively wastes gas and adds wear to your vehicle.

Keep your tires inflated. Low tire pressure increases rolling resistance, which reduces gas mileage. Check your tire pressure often and inflate them to the pressure on the door jamb label. A simple tire gauge can save you money.

Avoid idling. Idling burns gas without going anywhere. If you’re stopped for more than a minute, it’s better to turn off the engine. This is especially true in school pick-up lines or drive-throughs. A quick restart uses less gas than idling for a long time.

Use cruise control on the highway. Cruise control helps keep a steady speed, which improves gas mileage on long drives. Let the cruise control system handle the gas pedal to avoid speed changes.

Carry less weight. Extra weight reduces gas mileage. Remove anything you don’t need from the trunk or cargo area. Every extra pound needs more energy to move, so removing extra items can save gas. See all Cadillac fuel economy data for more information.