The 2020 GMC Yukon K1500 XL 4WD with the 6.2L V8 gets 16 MPG combined. It’s a thirsty reality, but one accepted by buyers who prioritize space, towing capacity, and a commanding presence over fuel efficiency. This isn’t a vehicle for those seeking to minimize their carbon footprint, it’s for families with multiple children, serious towing needs, and a preference for traditional truck-based SUVs. They need the Yukon XL’s cavernous interior and reliable capabilities, and are willing to pay for it at the pump.

City and highway performance

The EPA estimates 14 MPG in the city and 20 MPG on the highway. The city figure reflects the realities of stop-and-go traffic, where the Yukon XL’s considerable weight and large engine work against fuel conservation. The 20 MPG highway rating is achievable during steady-state cruising, but aggressive acceleration or headwinds will quickly diminish that number. The engine’s cylinder deactivation system helps a little, but don’t expect miracles from a 6.2-liter V8 pulling around a vehicle of this size. A lighter touch on the accelerator yields better results.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2020 GMC Yukon K1500 XL 4WD 6.2L is approximately $3,600. This estimate is based on driving 15,000 miles per year, with a roughly even split between city and highway driving, and assumes national average fuel prices. Individual fuel costs will vary depending on driving habits, local fuel prices, and the type of fuel used. Keep in mind that premium fuel is recommended for optimal performance from the 6.2L engine, which will further increase your annual expense. If you drive significantly more than 15,000 miles annually, or if fuel prices in your area are higher than average, expect to spend considerably more each year. This figure is a reminder that the Yukon XL’s capability comes at a significant and ongoing financial cost.

Real-world expectations

While the EPA figures provide a baseline, real-world MPG often differs. Expect to see figures within 1-2 MPG of the EPA estimates under normal driving conditions. Towing significantly impacts fuel economy, potentially dropping mileage into the single digits. Frequent short trips, especially in cold weather, also negatively affect efficiency, as the engine spends more time in its less efficient warm-up phase. Headwinds, mountainous terrain, and aggressive driving will all contribute to lower fuel economy than the EPA suggests. Those who frequently tow or operate in challenging conditions should budget accordingly.

How it compares

The 2020 Yukon XL is not a fuel-sipping vehicle, and its competitors generally suffer from similar limitations. The Ford Expedition Max with its 3.5L EcoBoost V6 achieves a slightly better EPA rating of 17 MPG combined. The Chevrolet Suburban, sharing a platform with the Yukon XL, achieves similar MPG numbers. The Nissan Armada, with its 5.6L V8, lands around 15 MPG combined. The Jeep Wagoneer, a more recent entrant, offers similar fuel efficiency depending on the engine chosen. All all Gmc fuel economy data reveal large SUVs come with a compromise for fuel economy.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. Smooth, gradual inputs allow the 10-speed automatic transmission to keep the engine in its most efficient range. Anticipate traffic flow and maintain a consistent speed whenever possible. The harder you work the engine, the more fuel you’ll consume. This might seem basic, but big gains can be found in changing your personal driving habits.

Ensure your tires are properly inflated. Under-inflated tires increase rolling resistance, forcing the engine to work harder and wasting fuel. Check your tire pressure regularly and maintain the recommended PSI listed on the driver’s side door jamb. Small changes like this can result in noticeable savings when compounded across thousands of miles. It’s also important to make sure you’re using the correct tires for your vehicle, as this has an impact, too. If you’re wondering about YUKON MPG across all years, this can be a big factor.

Minimize unnecessary weight. Carrying extra cargo increases the vehicle’s overall weight and reduces fuel economy. Remove any items you don’t need from the cargo area and passenger compartment. Leaving it out of the vehicle will help save on fuel. This is especially relevant for a vehicle as large as the Yukon XL, where it’s easy to accumulate extra gear.

Service your vehicle regularly according to the manufacturer’s recommendations. A well-maintained engine runs more efficiently. Replace air filters, spark plugs, and other wear items as scheduled. Check that the engine is properly tuned and free of any mechanical issues. Schedule your maintenance at regular intervals and don’t forget to service it.