22 MPG combined isn’t going to win any green awards, but for the 2023 GMC Yukon 4WD with the 3.0L Duramax diesel, it’s a reasonable compromise. This is a full-size SUV built for hauling people and gear, not saving fuel. The target audience isn’t people obsessed with saving fuel. It’s families who need space, towing capability, and the confidence of four-wheel drive. They accept the fuel economy as part of the Yukon’s overall package.

City and highway performance

The EPA estimates provide a breakdown of how the Yukon 4WD diesel performs in different driving environments. 20 MPG in the city reflects the stop-and-go nature of urban driving, where the Yukon’s weight is consistently being accelerated from a standstill. On the open road, the 26 MPG highway rating shows the engine’s efficiency at a constant speed. The diesel’s ample torque allows it to cruise comfortably without working too hard, contributing to the comparatively better highway fuel economy. The 10-speed automatic transmission also plays a crucial role, keeping the engine in its optimal power band to conserve fuel at higher speeds. These numbers are achievable, and experienced Yukon owners understand how to drive to these numbers or better.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2023 GMC Yukon 4WD 3.0L diesel is $2,550. This figure is based on driving 15,000 miles per year, using a combination of city and highway driving patterns, and assumes the national average fuel price. Remember that this is an estimate, and your actual fuel costs will depend on your individual driving habits, the type of fuel you purchase, and prevailing gas prices in your area. Someone who does mostly highway miles might spend less, someone stuck in constant city traffic will likely spend more than the $2,550 estimate. That number is a convenient and level playing field when comparing the YUKON MPG across all years.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy often varies. Payload, towing, and even tire pressure can all impact fuel consumption. A Yukon loaded with passengers and cargo, or one frequently used to tow a boat or trailer, will see a reduction in MPG. Aggressive driving, frequent hard acceleration, and extended idling will also negatively impact fuel economy. Owners report achieving the EPA’s figures in normal mixed driving, and some see slightly better results on long highway trips, particularly when driving conservatively.

How it compares

The Yukon’s diesel engine makes it a fuel economy leader in its class. It’s worth comparing it to other full-size SUVs. A gasoline-powered Chevrolet Tahoe 4WD with the 5.3L V8 is rated at 17 MPG combined, showing the diesel’s advantage. The Ford Expedition 4×4 with its 3.5L EcoBoost V6 manages 19 MPG combined. These numbers highlight the Duramax diesel’s niche: for those who need the capability of a full-size SUV and prioritize fuel efficiency, it’s typically the best choice. If you want a similarly sized SUV with better MPG, you must consider a hybrid driveline or a physically smaller vehicle, thus sacrificing utility. Also, be sure to compare all Gmc fuel economy data before reaching a conclusion.

Tips to Maximize Efficiency

Use the Yukon’s Driver Information Center. This display includes a real-time fuel economy meter, offering immediate feedback on your driving style. Watching this gauge can help you identify and modify habits that negatively impact fuel consumption. You’ll quickly learn how gentle acceleration and anticipating traffic flow can lead to significant improvements.

Ensure your tires are properly inflated to the recommended pressure listed on the doorjamb sticker. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Regular tire pressure checks are a simple yet effective way to improve fuel economy and extend tire life.

Avoid unnecessary idling. Modern diesel engines are designed to start and stop efficiently. Extended idling wastes fuel and contributes to emissions. If you’re stopped for more than a minute or two, it’s generally more fuel-efficient to turn off the engine and restart it when you’re ready to go.

Plan your routes strategically. Aggressive acceleration degrades mileage quickly. Use cruise control where appropriate, especially on long highway stretches. Avoiding peak traffic hours and opting for routes with fewer stop signs and traffic lights can also lead to better fuel economy.