24 MPG combined is respectable for the 2022 Chevrolet Tahoe 2WD with the 3.0L Duramax diesel. This isn’t a compact crossover; it’s a full-size, body-on-frame SUV designed to haul families, tow trailers, and conquer long road trips. The fuel economy is a bonus for buyers who prioritize space, capability, and traditional SUV traits. These are customers who need the Tahoe’s immense cargo area, seating for up to eight passengers, and truck-like towing capacity that smaller, more efficient crossovers can’t match. They’ve accepted some compromise on fuel efficiency, but the Duramax offers a blend of utility and relative thrift.

City and highway performance

The EPA estimates the Tahoe 2WD diesel at 21 MPG in the city and 28 MPG on the highway. The highway figure is impressive, showcasing the benefits of the diesel engine’s torque and the 10-speed automatic transmission’s ability to keep the engine operating in its most efficient range at cruising speeds. City driving, of course, is where the big Tahoe will inevitably suffer. Stop-and-go traffic and the vehicle’s considerable curb weight take their toll. Even with a lower city MPG number, the diesel’s efficiency is notable compared to its gasoline-powered counterparts.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Chevrolet Tahoe 2WD diesel at $2,300. This figure is based on driving 15,000 miles per year and using national average fuel prices. This is just an estimate, and your actual fuel costs will vary depending on your driving habits, local fuel prices, and the type of driving you do. However, it provides a useful benchmark for comparing the Tahoe’s fuel costs to those of other vehicles.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy often differs. Tahoe owners report that achieving the combined 24 MPG is possible, particularly on longer trips with mostly highway driving. However, expect that number to dip in mixed driving conditions, especially with frequent short trips or heavy loads. Aggressive driving, towing, and hilly terrain will also reduce fuel economy. Consistent monitoring of your own fuel consumption will provide a more accurate picture of what to expect in your specific driving environment.

How it compares

The diesel shines when compared to gasoline-powered Tahoes. The 2WD Tahoe with the 5.3L V8 is rated at 17 MPG combined, a significant difference. The four-wheel-drive versions of both engines naturally suffer a further MPG penalty. Other large SUVs like the Ford Expedition with its EcoBoost V6 achieve roughly similar numbers to the gasoline Tahoe, making the Duramax diesel a clear winner in its class when it comes to fuel efficiency. The Toyota Sequoia and other hybrid SUVs offer enhanced fuel economy, but they can’t match the Tahoe diesel’s towing capacity. The Chevy is more appealing to buyers who need that capability. For those interested in seeing all Chevrolet fuel economy data, it’s clear the Duramax offers an economy advantage within the lineup. Also, you can check the TAHOE MPG across all years.

Tips to maximize efficiency

Regularly check your tire pressure. Underinflated tires increase rolling resistance, forcing the engine to work harder and consuming more fuel. Consult the sticker on your driver’s side doorjamb for the recommended tire pressure and check it frequently, especially during temperature changes.

Avoid aggressive acceleration and braking. The diesel engine delivers ample torque at low RPMs, meaning you don’t need to press on the accelerator firmly to get moving. Smooth, gradual acceleration and anticipation of traffic flow will significantly improve fuel economy. Similarly, avoid hard braking whenever possible.

Minimize idling. Letting the engine idle for extended periods wastes fuel. If you’re stopped for more than a minute or two, it’s more efficient to turn off the engine and restart it. While diesels used to require warm-up time, modern engines like the Duramax do not.

Consider using cruise control on the highway. Cruise control helps maintain a constant speed, which can improve fuel economy on long trips. This is helpful on relatively flat stretches of highway where variations in throttle input are unnecessary. Be mindful of using it in hilly terrain as the system can sometimes downshift unnecessarily and waste fuel.

Keep up with regular maintenance. A well-maintained engine runs more efficiently. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and fuel filter replacements. A healthy engine maximizes fuel economy and ensures the Tahoe performs optimally for years to come.