2026 Chevrolet Tahoe — one of the most popular full-size SUVs on the market:

🚙 2026 Chevrolet Tahoe – EPA City/Highway MPG

Gas-Powered V8 Engines
These are the standard gasoline engines (5.3 L and 6.2 L V8s):

• City: ~14–15 mpg

• Highway: ~18–20 mpg

• Combined: ~16–17 mpg

➡️ Exact numbers depend on engine and drivetrain (RWD vs AWD). For example, a typical 5.3 L V8 Tahoe is about 15 mpg city / 20 mpg highway in RWD form. 

Diesel Engine (3.0 L Duramax Turbo-Diesel)
If equipped with the optional diesel:

• City: ~20–22 mpg

• Highway: ~26–28 mpg

• Combined: ~22–24 mpg

➡️ The diesel version is significantly more efficient, especially on long highway trips, though it’s optional and may cost more upfront. 

Quick City/Highway Summary

– These are EPA estimates and will vary by drivetrain (RWD vs AWD), trim, wheel size, and your driving style. 

🚗 Real-World Notes

▸ Gas V8 models often average ~15–19 mpg in everyday use — similar to EPA estimates in real back-road/highway driving. 
▸ Diesel Tahoes regularly see highway numbers in the mid-20s mpg range on long trips. 

If you want, I can estimate the approximate driving range per tank for each Tahoe engine based on these mpg figures and the Tahoe’s fuel tank capacity!