# GMC Terrain specs and mpg by year - **Latest year:** 2027 - **MPG (combined):** 25-26 - **Drive:** AWD, FWD - **Years covered:** 2015-2027 ## Quick answer The 2027 GMC Terrain is a small SUV rated at 25-26 mpg combined. Engines: 1.5L 4-cyl turbo. ## Every 2027 GMC Terrain version | Version | Engine | Drive | Transmission | City/Hwy | Combined | Fuel cost / year | CO2 | | --- | --- | --- | --- | --- | --- | --- | --- | | Terrain FWD | 1.5L 4-cyl turbo | FWD | Automatic | 25/28 | 26 mpg | $2,600 | 342 g/mi | | Terrain AWD | 1.5L 4-cyl turbo | AWD | Automatic | 24/28 | 25 mpg | $2,700 | 356 g/mi | | Terrain AWD Denali/AT4 | 1.5L 4-cyl turbo | AWD | Automatic | 24/26 | 25 mpg | $2,700 | 359 g/mi | Each row is a version the EPA tested. Fuel cost assumes 15,000 miles a year (55% city) at national average prices; CO2 is tailpipe emissions. ## GMC Terrain specs by year | Year | Engines | Transmission | Drive | MPG (combined) | | --- | --- | --- | --- | --- | | 2027 | 1.5L 4-cyl turbo | Automatic | AWD, FWD | 25-26 | | 2026 | 1.5L 4-cyl turbo | CVT, Automatic | AWD, FWD | 25-27 | | 2025 | 1.5L 4-cyl turbo | CVT, Automatic | AWD, FWD | 25-27 | | 2024 | 1.5L 4-cyl turbo | Automatic | AWD, FWD | 25-26 | | 2023 | 1.5L 4-cyl turbo | Automatic | AWD, FWD | 26 | | 2022 | 1.5L 4-cyl turbo | Automatic | AWD, FWD | 26-27 | | 2021 | 1.5L 4-cyl turbo | Automatic | AWD, FWD | 26-27 | | 2020 | 1.5L 4-cyl turbo; 2.0L 4-cyl turbo | Automatic | AWD, FWD | 23-27 | | 2019 | 2.0L 4-cyl turbo; 1.5L 4-cyl turbo; 1.6L 4-cyl turbo diesel | Automatic | AWD, FWD | 23-32 | | 2018 | 2.0L 4-cyl turbo; 1.5L 4-cyl turbo; 1.6L 4-cyl turbo diesel | Automatic | AWD, FWD | 23-32 | | 2017 | 2.4L 4-cyl; 3.6L V6 | Automatic | AWD, FWD | 18-25 | | 2016 | 2.4L 4-cyl; 3.6L V6 | Automatic | AWD, FWD | 18-26 | | 2015 | 2.4L 4-cyl; 3.6L V6 | Automatic | AWD, FWD | 19-26 | EPA combined ratings. MPGe is the EPA efficiency measure for electric cars. Ranges cover every engine and drivetrain EPA tested for that year. ## How has the Terrain changed over the years? - **2027:** combined mpg went from 25-27 to 25-26. - **2025:** combined mpg went from 25-26 to 25-27. - **2024:** combined mpg went from 26 to 25-26. - **2023:** combined mpg went from 26-27 to 26. - **2021:** dropped 2.0L 4-cyl turbo. - **2020:** dropped 1.6L 4-cyl turbo diesel. - **2018:** added 2.0L 4-cyl turbo, 1.5L 4-cyl turbo and 1.6L 4-cyl turbo diesel; dropped 2.4L 4-cyl and 3.6L V6. - **2017:** combined mpg went from 18-26 to 18-25. - **2016:** combined mpg went from 19-26 to 18-26. ## What does it cost to run a Terrain? The EPA puts the 2027 GMC Terrain's fuel cost at **$2,600-$2,700 a year**, against about $2,220 for other current small SUVs: roughly 19% more. Over five years at 15,000 miles a year that is about $13,250 in fuel. ## Terrain vs rivals | Model | Powertrains | Fuel economy | Fuel cost / year | | --- | --- | --- | --- | | [Toyota RAV4](/vehicles/toyota-rav4) | Hybrid | 38-43 mpg | $1,550-$1,750 | | [Kia Sportage](/vehicles/kia-sportage) | Gas, Hybrid, Plug-in hybrid | 24-42 mpg | $1,600-$2,800 | | [Toyota Corolla Cross](/vehicles/toyota-corolla-cross) | Gas, Hybrid | 30-42 mpg | $1,600-$2,250 | | [Ford Escape](/vehicles/ford-escape) | Gas, Hybrid, Plug-in hybrid | 26-40 mpg | $1,700-$2,600 | | [Honda CR-V](/vehicles/honda-cr-v) | Gas, Hybrid, Hydrogen | 29-40 mpg | $1,700-$2,300 | | [Lexus NX](/vehicles/lexus-nx) | Gas, Hybrid | 24-40 mpg | $2,050-$3,400 | | [Hyundai Tucson](/vehicles/hyundai-tucson) | Gas, Hybrid, Plug-in hybrid | 26-38 mpg | $1,750-$2,600 | | [Mazda CX-50](/vehicles/mazda-cx-50) | Gas, Hybrid | 25-38 mpg | $1,750-$2,700 | Other current small SUVs from other makes, most efficient first. ## Frequently asked questions ### What mpg does the 2027 GMC Terrain get? The 2027 GMC Terrain is EPA-rated at 25-26 mpg combined, depending on engine and drivetrain. Real-world mileage varies with speed, climate and load. ### What engine does the 2027 GMC Terrain have? The 2027 GMC Terrain comes with: 1.5L 4-cyl turbo. It uses automatic transmission and is offered with AWD and FWD. ### Is there a hybrid GMC Terrain? No. In the EPA data from 2015-2027 the GMC Terrain has no hybrid version. ### Which GMC Terrain year gets the best gas mileage? In the EPA data, the 2019 GMC Terrain has the highest combined rating, up to 32 mpg. Ratings for the same model can change between years when engines or test procedures change. ### How much does it cost to fuel a 2027 GMC Terrain for a year? About $2,600-$2,700 a year, using the EPA's assumptions of 15,000 miles (55% city, 45% highway) at national average fuel prices. Your cost depends on your local prices, mileage and driving style. ### What is the city and highway mpg of the 2027 GMC Terrain? The most efficient 2027 version, the Terrain FWD, is rated 25 mpg city and 28 mpg highway (26 combined). Other engines and drivetrains are rated lower; the versions table above lists each one. ### How much CO2 does the 2027 GMC Terrain emit? EPA rates its tailpipe CO2 at 342-359 grams per mile depending on version. Lower is better; the cleanest gas cars sit under 250 g/mi and electric cars have none at the tailpipe. ### Does the 2027 GMC Terrain come with all-wheel drive? Yes. The 2027 GMC Terrain is offered with AWD and FWD. All- or four-wheel drive usually costs 1-3 mpg compared with the two-wheel-drive version of the same engine, as the versions table shows. ### Is the GMC Terrain cheap to run compared with other small SUVs? No, dearer than average: its EPA annual fuel cost of $2,600-$2,700 compares with about $2,220 for other current small SUV models. Fuel is only part of running costs; insurance, tires and repairs also differ. ## Sources - [fueleconomy.gov (US DOE and EPA)](https://www.fueleconomy.gov/) ## More GMC models - [GMC Acadia](https://diagxcar.com/vehicles/gmc-acadia) - [GMC Canyon](https://diagxcar.com/vehicles/gmc-canyon) - [GMC Sierra](https://diagxcar.com/vehicles/gmc-sierra) - [GMC Yukon](https://diagxcar.com/vehicles/gmc-yukon) ## Other small SUVs - [Honda CR-V](https://diagxcar.com/vehicles/honda-cr-v) - [Honda Passport](https://diagxcar.com/vehicles/honda-passport) - [Hyundai Ioniq 5](https://diagxcar.com/vehicles/hyundai-ioniq-5) - [Hyundai Kona](https://diagxcar.com/vehicles/hyundai-kona) - [Hyundai Nexo](https://diagxcar.com/vehicles/hyundai-nexo) - [Hyundai Santa Cruz](https://diagxcar.com/vehicles/hyundai-santa-cruz) - [Hyundai Santa Fe](https://diagxcar.com/vehicles/hyundai-santa-fe) - [Hyundai Tucson](https://diagxcar.com/vehicles/hyundai-tucson) ## Car care - [How long do tires last?](https://diagxcar.com/how-long/tires) - [How often to change oil](https://diagxcar.com/how-often/change-oil) - [Tire size calculator](https://diagxcar.com/tools/tire-size-calculator) --- Source page: https://diagxcar.com/vehicles/gmc-terrain Updated: 2026-11-03 General information, not a substitute for a qualified mechanic.