The 2025 Cadillac XT6 with front-wheel drive and the 2.0L turbocharged four-cylinder engine gets 23 MPG combined. This isn’t a Prius competitor. It’s a mid-size luxury SUV for families who want space, comfort, and Cadillac prestige more than extreme fuel efficiency. Buyers of this XT6 model know they are making this trade-off. The lower price, compared to the V6 model or other SUVs, makes it appealing, and they accept the fuel economy as part of the deal.

City and highway performance

The EPA estimates the XT6 will get 21 MPG in the city and 27 MPG on the highway. The 2.0L turbo engine delivers its best efficiency when cruising at a consistent speed. Drivers making frequent short trips in cities will likely notice the 21 MPG. However, those driving long distances on highways will see fuel economy closer to 27 MPG, because the engine operates more efficiently at consistent speeds. The nine-speed automatic transmission helps keep the engine in its best power range.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Cadillac XT6 FWD 2.0L to be $2,500. This is based on driving 15,000 miles per year, using national average fuel prices. Your actual fuel costs will vary based on your driving habits and local gas prices. While $2,500 is a considerable amount, it should be viewed as part of the total cost of owning a luxury SUV. Owners often include this in their budget, along with insurance and maintenance.

Real-world expectations

Real-world fuel economy always varies, even with the EPA’s estimates. Aggressive acceleration, hard braking, heavy loads, and even incorrect tire pressure can change the numbers on your fuel gauge. Driving style is also important; smooth acceleration and braking will give you the best results. The numbers are based on 55% city and 45% highway miles, and this may not accurately reflect everyone’s driving.

How it compares

The XT6’s fuel economy isn’t the best in its class. The Acura MDX, for example, gets 19 MPG city and 26 MPG highway with FWD. The Lexus RX 350h (hybrid) gets 37 MPG combined, which is much better. Even the Infiniti QX60, with its larger V6 engine, gets around 21 MPG combined in FWD. This shows that while the XT6 is luxurious and spacious, fuel economy isn’t its strength, especially compared to hybrid vehicles or competitors with more efficient engines. Buyers who really want good fuel efficiency should compare other options. You can see all Cadillac fuel economy data on our site.

Tips to maximize efficiency

Use the XT6’s drive mode selector. “Tour” mode optimizes the powertrain for fuel efficiency by changing the throttle response and transmission shift points. Sport mode offers more exciting driving, but will reduce MPG.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which makes the engine work harder and use more fuel. Check your tire pressures often and inflate them to the recommended levels. You can usually find these levels on a sticker inside the driver’s side door.

Avoid idling. If you’re stopped for more than a minute, turn off the engine. Modern engines restart quickly, and idling wastes fuel. If your model has auto stop/start, learn how it works best.

Remove extra weight from the vehicle to improve fuel economy. Extra weight reduces fuel economy. Remove any unnecessary items from the trunk or cargo area. Every extra pound adds up during acceleration and uphill driving, so keeping the weight down improves XT6 MPG across all years.

Consider the fuel you are using. Check the owner’s manual for the engine’s specific fuel needs. Some engines respond well to premium fuel in terms of performance and efficiency, even if they are designed for regular gasoline although the difference may be small.