2026 GMC Terrain compact SUV — with ratings that vary slightly depending on whether you choose front-wheel drive (FWD) or all-wheel drive (AWD): 

🚙 2026 GMC Terrain — Fuel Economy (City / Highway)

🔹 FWD (Front-Wheel Drive)

• City: ≈ 26 MPG

• Highway: ≈ 28 MPG

• Combined: ~27 MPG 

🔹 AWD (All-Wheel Drive)

• City: ≈ 25 MPG

• Highway: ≈ 28 MPG

• Combined: ~25 MPG 

Key Notes:

• These estimates come from early 2026 specification listings, primarily based on the same 1.5 L turbo-charged four-cylinder engine used across the 2026 Terrain lineup. 

• FWD versions paired with a CVT tend to be slightly more efficient in city driving, while AWD models with an 8-speed automatic are close on highway MPG. 

• Official EPA ratings may continue to update, but these figures are widely reported by GMC dealers and car review sources as the best current estimates. 

Would you like estimated driving range per full tank based on these MPG numbers? (I can calculate that too.)