2025 Gmc Terrain Denali For Sale. Combined gas mileage for the 2025 gmc terrain is 27 miles to the gallon (8.7. It's redesigned for 2025 with new interior and exterior styling.

With an expected late 2024 release date and a fresh new redesign, there’s a lot to get excited. Truecar has over 1,163,411 listings nationwide,.