23 MPG combined is respectable for the 2021 GMC Yukon 2WD 3.0L 6-cyl, especially for a full-size SUV built for hauling families, towing trailers, and comfortable long road trips. Yukon owners typically need space, capability, and a touch of luxury, and they appreciate fewer gas station stops.

City and highway performance

The EPA estimates for the 2021 Yukon 2WD with the 3.0L Duramax diesel are 21 MPG in the city and 27 MPG on the highway. The city figure reflects stop-and-go driving, where the Yukon’s weight affects fuel economy. The highway number highlights the diesel engine’s efficiency. Paired with a smoothly shifting 10-speed automatic transmission, the Yukon cruises efficiently at higher speeds, making it a good choice for frequent long trips. The transmission’s tall gearing keeps the engine speed low on the highway, saving fuel and reducing engine wear.

Annual fuel cost

The EPA estimates that owners of the 2021 GMC Yukon 2WD 3.0L will spend about $2,400 on fuel annually. This is based on 15,000 miles per year, a mix of city and highway driving, and average national fuel prices. This figure is a benchmark for comparing fuel costs with other vehicles, but your fuel costs will vary based on your driving habits, location, and diesel fuel prices. You can explore all Gmc fuel economy data to see how the Yukon compares to other models.

Real-world expectations

EPA estimates are a standardized baseline, but real-world fuel economy varies. Careful drivers prioritizing smooth acceleration and consistent highway speeds may exceed the EPA’s 27 MPG highway estimate. However, those who frequently tow, drive aggressively, or drive in heavy city traffic may see numbers closer to the 21 MPG city rating, or slightly below. Your driving style is the biggest factor. You can also research YUKON MPG across all years to see what other owners report.

How it compares

The 2021 Yukon 2WD 3.0L diesel compares favorably to other SUVs. The gasoline-powered Chevrolet Tahoe 2WD with the 5.3L V8 gets about 16 MPG city and 20 MPG highway. The smaller Toyota Highlander gets about 21 MPG combined with its V6 engine. The Jeep Grand Cherokee with its V6 engine achieves approximately 19 MPG combined. These comparisons highlight the diesel Yukon’s efficiency, especially for those who prioritize highway driving and the engine’s strong torque for towing. Yukon buyers often require the space and capabilities, and the diesel mitigates the fuel cost of a large SUV.

Tips to maximize efficiency

Use the Yukon’s Eco mode. This setting adjusts the engine and transmission to prioritize fuel efficiency. Use Eco mode for everyday driving, especially in the city, unless you need maximum acceleration It subtly smooths out throttle response and encourages earlier upshifts from the 10-speed automatic.

Check your tire pressure regularly. Underinflated tires increase rolling resistance, making the engine work harder and consume more fuel. Check the sticker on the driver’s side doorjamb for the recommended tire pressure at least once a month, or before long trips. Even a few PSI below the recommended level affects fuel economy.

Accelerate smoothly and progressively. Avoid sudden bursts of speed, which waste fuel. Anticipate traffic flow and maintain a steady speed. The diesel engine’s low-end torque means you don’t need to rev the engine to accelerate; use that torque and accelerate gently.

Reduce unnecessary weight inside the vehicle. Extra cargo adds to the Yukon’s weight, requiring more energy to accelerate and maintain speed. Remove items you don’t need, such as sporting equipment or tools, which can add up and affect fuel efficiency. A cleaner, lighter vehicle is more efficient.