16 MPG combined isn’t a figure anyone will mistake for class-leading efficiency, but for the 2025 GMC Yukon XL 4WD powered by the 6.2L V8, it’s about commanding presence, effortless hauling, and maximum passenger and cargo capacity, regardless of terrain. This isn’t a vehicle bought for its fuel efficiency; it’s purchased because its owners demand uncompromised capability and the rumble of a large displacement American V8 to move their large families and their extensive gear. This is the SUV for the buyer who routinely pulls substantial loads, navigates rough roads, or simply needs the sheer interior volume and presence that only a full-size, body-on-frame SUV can deliver. They understand the nature of the vehicle, and they embrace it.

City and Highway Performance

The EPA ratings for the 2025 GMC Yukon XL 4WD 6.2L 8-cylinder show its operational reality: 14 MPG in the city and 18 MPG on the highway. The city figure, 14 MPG, highlights the energy required to propel over three tons of steel and luxury appointments from a standstill, repeatedly. Stop-and-go traffic and urban environments are taxing on any large vehicle, and the Yukon XL is no exception. Its considerable mass and the responsive 6.2L V8, always ready to deliver ample torque, contribute directly to this figure. On the highway, the 18 MPG rating shows a significant improvement. Here, the vehicle settles into a rhythm, the 10-speed automatic transmission managing engine RPMs to maintain momentum with less effort. The Yukon XL’s aerodynamic profile, while substantial, is engineered for stable highway cruising, and the V8 can often run in cylinder deactivation mode, operating as a V4 when demands are light, contributing to that relatively better highway performance.

Annual Fuel Cost

The EPA estimates an annual fuel cost of $3,600 for the 2025 GMC Yukon XL 4WD 6.2L 8-cyl. This figure comes from a standardized calculation: assuming 15,000 miles of driving per year, split evenly between city and highway, and using national average fuel prices. It’s a direct projection designed to offer a consistent benchmark for comparing vehicles across different segments. For the typical Yukon XL buyer, this $3,600 annual expenditure is part of the cost for a vehicle that provides utility and confidence. They aren’t surprised by this number; rather, they factor it into their overall budget, understanding it’s the price for effortlessly pulling their boat, comfortably seating eight for a long road trip, or tackling inclement weather with four-wheel-drive assurance. They rationalize this cost against the vehicle’s capability and how well it integrates into their lifestyle.

Real-World Expectations

In real-world driving, owners of the 2025 GMC Yukon XL 4WD 6.2L 8-cyl can generally expect to be around the EPA’s combined 16 MPG, give or take a mile or two per gallon. How the vehicle is used heavily influences this figure. Someone frequently pulling a heavy trailer will see significantly lower numbers, perhaps dipping into the low teens or even high single digits depending on the load and terrain. Similarly, purely urban dwellers who spend most of their time in heavy traffic will likely see closer to the 14 MPG city rating. However, a driver with a balanced commute that includes a good portion of highway cruising might find themselves consistently hitting 17 or 18 MPG. The 6.2L V8’s power delivery is addictive, and a heavy right foot will always yield less efficient results. Conversely, a disciplined driver using smooth acceleration and anticipating traffic will get the best possible figures. The Yukon XL’s mission is grand, and its fuel consumption reflects that; it performs exactly as its specifications suggest, and a buyer committed to its virtues accepts this reality.

How it Compares

When stacking the 2025 GMC Yukon XL 4WD 6.2L 8-cyl against its direct competitors, its 16 MPG combined rating often places it squarely in line with or slightly below its immediate rivals, particularly those offering similar large-displacement V8 engines. Take the Ford Expedition Max with its 3.5-liter EcoBoost V6, for instance. A 4WD Expedition Max typically hits around 18 MPG combined (16 city/21 highway). While that’s a couple of MPG better than the Yukon XL’s 6.2L, the Expedition’s powertrain delivers its power differently, relying on turbocharging rather than raw displacement. For a buyer prioritizing the smoothness and natural response of a large naturally aspirated V8, that difference in efficiency is a worthwhile tradeoff. Another competitor, the Jeep Wagoneer/Grand Wagoneer L with its 3.0L Hurricane Twin-Turbo I6, sometimes achieves 17 MPG combined, also marginally better, but again, it’s a different engine approach. Even its platform sibling, the Cadillac Escalade ESV with the same 6.2L V8, will post identical numbers. For more details on other model years, explore the Yukon MPG across all years.

The decision for a Yukon XL 6.2L buyer isn’t about getting every last mile per gallon; it’s about the character and capability inherent in the powertrain. They are purchasing a particular driving experience and a specific level of performance, particularly for pulling and acceleration, where the 6.2L V8 truly shines. The slightly lower MPG compared to some forced-induction rivals is understood as the cost of having that traditional, potent V8 under the hood. They also understand that for all GMC fuel economy data, the context of the vehicle’s size and mission is important.

Tips to Maximize Efficiency

Maintain consistent highway speeds. The 10-speed automatic transmission in the Yukon XL is designed to reduce engine RPMs at cruising speed, so avoiding excessive acceleration and deceleration will allow the transmission to stay in its most efficient gears for longer, making the most of the cylinder deactivation technology. Using cruise control on open stretches of highway is also highly recommended to smooth out throttle inputs.

Anticipate traffic flow in urban environments. Given the Yukon XL’s substantial mass, braking and accelerating repeatedly consume significant fuel. Look ahead for upcoming stoplights or slowing traffic to gently ease off the accelerator, allowing the vehicle to coast as much as possible rather than coming to a full stop and then demanding power to get moving again.

Keep tires properly inflated. Under-inflated tires increase rolling resistance, forcing the engine to work harder to maintain momentum. Checking tire pressure regularly, especially before long trips or when ambient temperatures change significantly, is a simple, effective way to ensure optimal fuel economy and tire longevity.

Remove unnecessary weight. While the Yukon XL is designed to carry a lot, any additional, non-essential weight will incrementally reduce fuel efficiency. If you’re not routinely using the third row, or if heavy items are habitually stored in the cargo area, removing them when not needed will marginally lighten the load and improve performance.

Use scheduled maintenance. A well-maintained engine runs more efficiently. Adhering to the factory maintenance schedule for oil changes, air filter replacements, and spark plug checks ensures that the 6.2L V8 operates at its peak performance and efficiency, preventing minor issues from becoming major drains on fuel economy and overall reliability.