The 2015 GMC Yukon K1500 4WD with the 5.3L V8 gets 18 MPG combined. Nobody is buying this Yukon for its fuel economy. They’re buying it for its truck-based durability, its immense passenger and cargo space, its impressive towing capacity, and its undeniable presence. Fuel efficiency is a secondary consideration, a necessary compromise for the capability they demand.

City and highway performance

The Yukon’s EPA estimates are 16 MPG in the city and 22 MPG on the highway. The city driving figure reflects the engine’s need to work harder to get this heavy SUV moving from a standstill, coupled with frequent stop-and-go traffic. The highway number is achievable because the engine settles into a more efficient cruising mode, especially when using cruise control on relatively flat terrain. Even slight inclines or headwinds can significantly impact that highway number.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,450 for this Yukon. This figure is based on driving 15,000 miles per year and using national average fuel prices at the time of calculation. Your actual fuel costs will vary depending on how many miles you drive, how aggressively you drive, and where you live, as fuel prices fluctuate regionally. The estimate provides a standardized benchmark for comparing the running costs of different vehicles, but it’s only a starting point.

Real-world expectations

Do not expect to consistently achieve the EPA estimates. Real-world MPG tends to be lower, especially for those who frequently tow or haul heavy loads. Aggressive driving habits, short trips where the engine never fully warms up, and even tire pressure can all negatively impact fuel economy. Expect somewhere between 14-19 MPG in mixed driving, depending on your driving style and conditions. Owners who prioritize fuel efficiency and adopt careful driving habits might see numbers closer to the EPA estimates, while others could see significantly lower figures.

How it compares

The 2015 Yukon’s fuel economy is about what you’d expect for a full-size, truck-based SUV of its era. A similarly equipped 2015 Ford Expedition 4×4 with the 3.5L EcoBoost V6 manages about 18 MPG combined. A 2015 Toyota Sequoia 4×4, known for its reliability but less so for its efficiency, clocks in at a dismal 15 MPG combined. These comparisons are important for buyers weighing ruggedness and space against the realities of fuel costs. Someone prioritizing fuel efficiency above all else would likely consider a more modern, lighter-weight SUV, even one with less towing capacity. It’s also worth examining all Gmc fuel economy data for other models that might better suit their needs.

Tips to maximize efficiency

Gentle acceleration and smooth braking are fundamental to saving fuel in any vehicle, and the Yukon is no exception. Avoid “jackrabbit” starts and anticipate traffic flow to minimize hard braking. The Yukon is heavy, so accelerating aggressively requires a lot of fuel. Ease into the throttle and let the transmission shift smoothly.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tires regularly and inflate them to the pressure specified on the door jamb sticker or in your owner’s manual. Even a few PSI below the recommended pressure can make a noticeable difference.

Minimize idling. Letting the Yukon idle for extended periods consumes fuel without covering any distance. If you’re going to be stopped for more than a minute, turn off the engine. Modern engines are designed to withstand frequent starts and stops, and restarting the engine consumes less fuel than idling.

Reduce aerodynamic drag. Remove any unnecessary cargo from the roof rack and ensure the bed is covered when not in use. These items create wind resistance, forcing the engine to work harder and burn more fuel. Streamlining the Yukon’s profile can improve highway fuel economy.

Consider the driving mode. The Yukon may have a “Tow/Haul” mode designed for pulling trailers. Avoid using this mode when not towing, as it alters the shift points and can negatively impact fuel economy. Also, YUKON MPG across all years shows how much the different model years impact fuel efficiency.