The 18 MPG combined fuel economy rating of the 2016 GMC Yukon K1500 XL 4WD 5.3L 8-cyl is not going to win any awards, but it accurately reflects the reality of hauling up to nine people and their gear in all weather conditions in a body-on-frame SUV. Nobody buys a Yukon XL expecting Prius-level fuel sipping. This truck is for those who need the space and capability, and are prepared to accept the tradeoffs at the pump.

City and highway performance

The EPA estimates the 2016 Yukon XL 4WD at 15 MPG in the city and 22 MPG on the highway, figures that reflect the push and pull between the engine’s immense power and the vehicle’s considerable weight. The 5.3L V8, while reliable and strong, requires fuel to move nearly three tons of truck, especially when navigating stop-and-go city traffic. On the open road, the cylinder deactivation system helps to eke out better efficiency, but the aerodynamic profile of a large SUV ultimately limits its highway fuel economy potential. The six-speed automatic transmission delivers adequate performance, but the age of this transmission is evident in its efficiency compared to newer 8 and 10 speed automatics. The highway MPG figure is achievable, but demands a light foot and disciplined use of cruise control.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2016 GMC Yukon K1500 XL 4WD at $2,450. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway. The calculation uses the national average fuel price when the estimate was generated. Keep in mind that fluctuations in gasoline prices will directly impact your real-world fuel expenses. If you drive more than 15,000 miles annually, expect to spend proportionally more on fuel. While some owners may try to push the boundaries of the manufacturer’s recommended fuel grade, doing so is not advisable.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy often varies depending on driving habits, terrain, and load. Yukon XL owners who frequently tow trailers or carry heavy loads will likely see fuel economy figures below the EPA estimates. Aggressive driving, including rapid acceleration and hard braking, will also negatively impact fuel efficiency. Conversely, drivers who prioritize smooth acceleration, maintain consistent speeds, and avoid unnecessary idling may be able to achieve fuel economy closer to the EPA’s highway rating, even in mixed driving conditions. Tires can play a large role in MPG as well. Stock size tires designed for better fuel mileage will often provide a 1-2 MPG increase compared to larger, more aggressive tires.

How it compares

The 2016 Yukon XL’s fuel economy sits squarely in the middle of its competitive set. The Ford Expedition EL with its 3.5L EcoBoost V6, for example, offered similar fuel economy (16 MPG city, 22 MPG highway), while the Chevrolet Suburban, mechanically similar to the Yukon XL, delivers nearly identical figures. A Toyota Sequoia, known for its reliability but not its efficiency, typically managed around 13 MPG city and 17 MPG highway. For the Yukon XL buyer, fuel economy is often a secondary consideration compared to space, towing capacity, and the brand’s reputation for reliable trucks and SUVs. Those who wanted slightly better fuel efficiency may have considered the standard-length Yukon or Suburban, though at the obvious expense of cargo space. See YUKON MPG across all years.

Tips to maximize efficiency

Gentle acceleration is key to saving fuel in the Yukon XL. The 5.3L V8 has plenty of torque, so there’s no need to stomp on the gas pedal. Lightly feather the accelerator to reach your desired speed. This will help minimize fuel consumption, especially in city driving.

Maintain a steady speed on the highway. Use the cruise control to avoid unnecessary speed fluctuations, which can waste fuel. Anticipate traffic conditions and avoid sudden braking and acceleration.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which decreases fuel economy. Check your tire pressure regularly and inflate them to the recommended pressure listed on the driver’s side doorjamb. Reducing cargo weight will also increase fuel efficiency.

Avoid extended idling. If you’re going to be stopped for more than a minute or two, turn off the engine. Modern vehicles are designed to restart quickly and efficiently. A little change can add up over time. Remember to check all Gmc fuel economy data.