23 MPG combined isn’t a headline figure, but it’s a surprisingly respectable number from the 2024 GMC Yukon XL 2WD with the 3.0L Duramax diesel. This isn’t a compact crossover; it’s a full-size, extended-length SUV designed for hauling families and gear in comfort. For those buyers, the diesel’s efficiency represents a good compromise. They understand that size and capability come with a fuel economy penalty, but they seek ways to reduce it. This Yukon XL configuration provides a way to do just that.

City and highway performance

The official EPA estimates break down to 21 MPG in the city and 27 MPG on the highway. That city figure reflects urban driving, where the Yukon XL’s mass means more energy to accelerate. However, the highway number is where the diesel does well. The 3.0L Duramax, paired with the 10-speed automatic transmission, allows for relaxed cruising at highway speeds, keeping the engine in its most efficient operating range. This is relevant for families that take long road trips, where the highway MPG will reduce fuel stops and overall travel costs. The 2WD configuration plays a role, removing the weight and mechanical drag associated with four-wheel-drive systems.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2024 GMC Yukon XL 2WD 3.0L diesel is $2,400. This figure is based on driving 15,000 miles per year, with a percentage of those miles driven in city versus highway conditions, and using the national average fuel price. It’s a standardized calculation that allows consumers to compare fuel costs across different vehicles. Individual fuel costs will vary based on driving habits and local fuel prices, but the $2,400 estimate provides a useful benchmark for potential owners.

Real-world expectations

While the EPA estimates are a starting point, real-world fuel economy can vary. Factors such as driving style, terrain, weather conditions, and vehicle load can all impact MPG. Aggressive acceleration and hard braking will reduce fuel economy, while smooth inputs will help to maximize it. Hilly terrain will also place a greater strain on the engine, leading to lower MPG. With attentive driving, the Yukon XL diesel driver can often meet or even exceed the EPA’s estimates, particularly on long highway drives. Expect this to drop in heavy stop and go driving.

How it compares

The Yukon XL 2WD 3.0L diesel’s fuel economy is comparable to its competitors. For those prioritizing maximum passenger and cargo space, direct rivals include the Chevrolet Suburban and Ford Expedition Max. The Suburban with its comparable 3.0L Duramax diesel engine achieves similar fuel economy numbers to the Yukon XL. A Ford Expedition Max, equipped with its gasoline EcoBoost engine, typically delivers combined MPG figures in the high teens to low twenties, making the Yukon XL diesel more attractive for fuel conscious owners. Looking at alternative options, slightly smaller three-row SUVs like the Toyota Highlander achieve significantly higher MPG, often in the mid-20s, but they lack the Yukon XL’s immense cargo capacity and towing capability. Review YUKON MPG across all years and see how this plays out.

Tips to maximize efficiency

Use the Yukon XL’s smooth-shifting 10-speed automatic transmission. Gentle acceleration will allow the transmission to upshift quickly, keeping the engine in its most efficient operating range. Anticipate traffic flow and avoid unnecessary braking, this wastes kinetic energy.

Ensure your tires are properly inflated to the recommended pressure, which can be found on the sticker inside the driver’s side door jamb. Underinflated tires increase rolling resistance, reducing fuel economy. Regularly check and adjust tire pressure, as it fluctuates with temperature.

Minimize excess weight. The heavier the vehicle, the more energy it takes to accelerate and maintain speed. Remove any unnecessary items from the cargo area and passenger compartment. Carrying around extra weight consumes more fuel.

Use cruise control on the highway. This helps to maintain a consistent speed, which reduces unnecessary acceleration and deceleration. It also helps you avoid unintentional speeding.

Consider the diesel’s unique characteristics. Diesel engines often benefit from a brief warm-up period, especially in cold weather. Allowing the engine to reach operating temperature before demanding peak performance can improve efficiency and extend engine life. See all Gmc fuel economy data for a bigger picture of the brand’s ratings.