24 MPG combined is a surprisingly strong showing for the 2024 Chevrolet Tahoe 2WD with the 3.0L Duramax diesel engine. Nobody buys a Tahoe *primarily* concerned about fuel economy. This is a full-size SUV built for hauling families, cargo, and trailers, often all at the same time. For buyers who *need* the Tahoe’s capabilities, the diesel’s efficiency is a significant and welcome bonus.

City and highway performance

The official EPA figures break down to 21 MPG in the city and a more impressive 28 MPG on the highway. That highway figure is where the Duramax shines, allowing for genuinely long-distance cruising without constant fuel stops. The city MPG is more realistic for day-to-day use, especially considering the Tahoe’s size and weight. Many owners find that real-world city driving often includes stop-and-go traffic, which will naturally depress the observed MPG.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,300 for the 2024 Chevrolet Tahoe 2WD diesel. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the types of roads you drive on (city versus highway), and prevailing diesel fuel prices in your region.

Real-world expectations

The EPA provides a standardized benchmark, but real-world fuel economy can vary significantly. Factors like driving style, terrain, and even tire pressure can impact your MPG. Owners who frequently tow or carry heavy loads will see a decrease in fuel economy. Those who primarily drive on the highway and practice efficient driving techniques may exceed the EPA estimates. For a more accurate idea of what you can expect, consider checking online forums and owner reviews for real-world MPG data from other Tahoe diesel owners. Note this specific diesel engine requires Diesel Exhaust Fluid (DEF), an additional cost.

How it compares

Compared to other large SUVs, the Tahoe 2WD diesel holds its own admirably. The gasoline-powered Tahoe 2WD with the 5.3L V8, for example, achieves a combined EPA rating of just 17 MPG. The Ford Expedition 2WD manages 19 MPG combined, while the Nissan Armada struggles to reach even 16 MPG. Even the similarly sized GMC Yukon diesel comes in slightly lower at 23 MPG combined. These differences are meaningful over the long run, potentially saving owners hundreds or thousands of dollars in fuel costs each year. For drivers who need the capability of a full-size SUV but are also mindful of lower fuel costs, the Duramax-equipped Tahoe is a good option. For comparison, see TAHOE MPG across all years.

Tips to maximize efficiency

Take advantage of the Tahoe’s 10-speed automatic transmission. It’s designed to keep the engine in its most efficient operating range. Avoid aggressive acceleration and braking, as this wastes fuel. Gentle inputs will allow the transmission to upshift smoothly and keep the engine running at a lower RPM, maximizing fuel economy.

Maintain proper tire pressure. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check your tire pressure regularly and inflate them to the manufacturer’s recommended specifications, which can be found on a sticker inside the driver’s side doorjamb.

Minimize idling. Idling consumes fuel without covering any distance. If you anticipate being stopped for more than a minute, turn off the engine. Modern vehicles like the Tahoe are designed to restart quickly and easily, so there’s no need to waste fuel while stationary.

Reduce unnecessary weight. Carrying extra cargo in the vehicle increases the amount of energy required to move it. Remove any unnecessary items from the vehicle to reduce weight and improve fuel efficiency.

Consider using cruise control on the highway, especially on flat terrain. Cruise control helps maintain a constant speed, which can improve fuel efficiency. However, avoid using cruise control in hilly areas, as the vehicle may downshift frequently, negating any potential fuel savings. For more information, see all Chevrolet fuel economy data.