17 MPG combined is a number most 2020 Chevrolet Tahoe C1500 2WD 6.2L owners simply accept, not celebrate. This isn’t a Prius, and no one buying a full-size, two-wheel-drive SUV with a strong 6.2-liter V8 expects hybrid-like fuel efficiency. They’re buying a Tahoe for its cavernous interior, towing capability, and commanding presence. Fuel economy is a secondary consideration, a necessary compromise for the capabilities it unlocks.

City and highway performance

The EPA estimates this Tahoe variant achieves 14 MPG in the city and 23 MPG on the highway. That city figure, the lowest of the three, reflects the engine’s displacement and the vehicle’s weight, requiring a significant amount of fuel to repeatedly accelerate from stops in urban driving. The highway number is more respectable because at cruising speeds, the 10-speed automatic transmission allows the engine to operate at lower RPMs, improving efficiency. However, even on the open road, the Tahoe’s considerable size and boxy shape create significant aerodynamic drag, limiting how high that MPG figure can climb.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,400 for this specific Tahoe configuration, based on 15,000 miles of driving per year and national average fuel prices. It’s a stark reminder of the ongoing expense associated with owning a large, powerful SUV. Keep in mind this figure is an average; drivers who do mostly city driving, tow frequently, or have a heavier foot will likely see a higher annual fuel bill. It’s money well-spent, however, for those who truly need what the Tahoe offers.

Real-world expectations

The EPA’s estimates provide a baseline, but real-world MPG can vary significantly. Drivers who live in areas with hilly terrain, experience frequent stop-and-go traffic, or regularly tow trailers will likely see lower numbers. Those who primarily drive on flat highways at consistent speeds might achieve figures closer to or even slightly exceeding the EPA’s estimates.

Driving style is also a major factor; aggressive acceleration and hard braking will significantly decrease fuel efficiency. Some owners have seen as high as 25 MPG on long highway trips, while others report averages closer to 15 MPG overall. Check out TAHOE MPG across all years to compare with the latest data.

How it compares

Compared to its competitors, this particular Tahoe configuration lands near the bottom of the fuel efficiency spectrum. A comparable Ford Expedition with its 3.5-liter EcoBoost V6 offers slightly better fuel economy, often achieving around 17 MPG combined, thanks to turbocharging and smaller displacement. The Nissan Armada, with its standard 5.6-liter V8, is similarly thirsty with roughly 16 MPG combined. Even other Tahoe variants, like those equipped with the 5.3-liter V8, offer a marginally better average rating, but sacrifice some horsepower and torque. For buyers who are more concerned about fuel efficiency, compact and mid-size SUVs offer considerably better mileage. All Chevrolet fuel economy data can be reviewed for context. But for those specifically seeking the Tahoe’s blend of power and space, alternatives offer minimal gains, making fuel economy a less decisive factor.

Tips to maximize efficiency

Avoid aggressive acceleration. The 6.2-liter V8 is tempting to unleash, but rapid acceleration drastically reduces fuel economy. Gentle starts and smooth transitions will make a noticeable difference over time. Also, consider every additional pound in the vehicle increases fuel consumption because of the vehicle’s size and power.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check tire pressure regularly and inflate to the manufacturer’s recommended settings, which can be found on the driver’s side doorjamb or in the owner’s manual. This is general across all vehicles, but it can have a sizable impact on economy for larger vehicles in particular.

Take advantage of cruise control on the highway. Maintaining a consistent speed minimizes unnecessary acceleration and deceleration, contributing to better fuel efficiency. On long, flat stretches of highway, cruise control can help optimize fuel consumption.

Minimize idling. Modern engines consume fuel even when idling. If you anticipate being stopped for more than a minute or two, turn off the engine. Restarting the engine consumes less fuel than idling for an extended period.

Use the Tow/Haul mode judiciously. While essential for towing, this mode alters shift points and engine mapping to prioritize power and torque over fuel efficiency. Only engage Tow/Haul when actually towing a trailer or hauling heavy loads. The Tahoe is a capable hauler and that is why it is attractive to some, but fuel consumption changes with that capability.