The 2017 Cadillac XTS AWD with the 3.6L V6 gets 20 MPG combined. This figure won’t win any awards, but it likely isn’t a dealbreaker for the XTS’s target demographic. This isn’t a vehicle bought for hyper-miling. It’s a large, comfortable sedan purchased primarily by those prioritizing space, smooth ride quality, and a certain level of traditional American luxury. Buyers are more likely to focus on heated seats and a hushed cabin than tenths of a gallon per mile. Fuel efficiency is a consideration, but usually not the main one.

City and highway performance

The EPA estimates the 2017 XTS AWD at 17 MPG in the city and 26 MPG on the highway. That 17 MPG city rating reflects the realities of moving a large, all-wheel-drive vehicle through stop-and-go traffic. Expect the engine to work harder and consume more fuel in these conditions. The 26 MPG highway figure is reasonable, achievable when cruising at a steady speed. These figures are for the AWD model; the front-wheel-drive version offers slightly better fuel economy, but sacrifices all-weather traction, a feature many XTS buyers find valuable.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2017 Cadillac XTS AWD is $2,200. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs will vary depending on driving habits, local fuel prices, and the number of miles you actually drive. Someone who primarily drives short distances in the city will likely spend more, while someone who does mostly highway driving may spend less.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy can vary. Factors like driving style, tire pressure, and vehicle maintenance all play a role. Aggressive acceleration and hard braking will significantly reduce fuel economy. Maintaining proper tire inflation and ensuring the vehicle is properly maintained can help you achieve closer to the EPA estimates. Expect a broader range than the EPA states, some drivers might see closer to 18 MPG combined, while others might approach 22 MPG if they prioritize fuel-efficient driving techniques under ideal conditions.

How it compares

In the large sedan segment, the 2017 Cadillac XTS AWD V6 exists in a competitive landscape. For example, the similar-sized Lexus ES 350 offers significantly better fuel economy, rated at 21 MPG city and 30 MPG highway. The ES is not available with all-wheel drive. Another competitor is the Chrysler 300 AWD, which gets around 18 MPG city and 27 MPG highway with its V6 engine. The XTS’s numbers are fairly typical for luxury sedans offering AWD and a V6 engine. These comparisons matter because even a 1-2 MPG difference can translate into hundreds of dollars saved at the pump each year. Many owners will also consider fuel efficiency data across XTS MPG across all years when researching their next purchase.

Tips to maximize efficiency

Gentle acceleration and braking are critical to maximizing fuel efficiency. Avoid sudden bursts of speed and anticipate traffic flow to minimize unnecessary braking. The XTS’s smooth ride encourages relaxed driving anyway, so take advantage of it and ease off the accelerator.

Keep your tires properly inflated. Check your tire pressure regularly and maintain the recommended pressure listed on the driver’s side doorjamb or in the owner’s manual. Underinflated tires increase rolling resistance, which reduces fuel economy. A simple tire pressure check can make a noticeable difference.

Minimize idling. Excessive idling wastes fuel. If you’re stopped for more than a minute, turn off the engine. The XTS’s comfortable interior makes waiting bearable, but shutting off the engine is always the more fuel-efficient option, especially in the city.

Avoid carrying unnecessary weight. Extra weight in the car reduces fuel economy. Remove any unnecessary items from the trunk and passenger compartment. The XTS offers ample cargo space, but only carry what you need.

Schedule regular maintenance. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug maintenance which you will find on all Cadillac fuel economy data.