2026 GMC Terrain Specs
2 powertrain configurations on federal record for the 2026 GMC Terrain: 1.5L 4-cyl Regular Gasoline, in Front-Wheel Drive and All-Wheel Drive, rated up to 27 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 1.5L 4-cyl Regular Gasoline | Automatic (variable gear ratios) | Front-Wheel Drive | 26 | 28 | 27 |
| 1.5L 4-cyl Regular Gasoline | Automatic 8-spd | All-Wheel Drive | 24 | 28 | 25 |
Terrain by year
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Frequently asked questions
What engines does the 2026 GMC Terrain have?
One powertrain on federal record: 1.5L 4-cyl Regular Gasoline, offered with Automatic (variable gear ratios), Automatic 8-spd and Front-Wheel Drive or All-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2026 GMC Terrain get?
EPA combined ratings run 25–27 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
Is 2026 a good year for the GMC Terrain?
Specs don't answer that — the federal complaint and recall record does. See the GMC Terrain year-by-year reliability verdicts at carwhere.com/research/years-to-avoid/gmc/terrain, built from NHTSA data.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2026 GMC Terrain overall. For one specific vehicle — its exact engine, trim, factory options, and original window sticker — decode the 17-character VIN free at carwhere.com/tools/vin-decoder.
Where does this data come from?
The U.S. EPA's public vehicle dataset (fueleconomy.gov) — the federal record of every US-market configuration since 1984 — refreshed 2026-10-26. Public-domain data; republish with attribution to CarWhere (carwhere.com).