2020 GMC Terrain MPG
EPA-rated · verified snapshot 2026-08-30 · Small Sport Utility Vehicle 2WD
The 2020 GMC Terrain gets 27 MPG combined — 26 city and 30 highway — in its most efficient configuration (1.5L · 4-cyl · Automatic 9-spd · Front-Wheel Drive).
City26 MPG
Highway30 MPG
$2,300Fuel cost / yr (EPA est.)
325 g/miCO₂
RegularFuel
$-5005-yr fuel cost vs. average vehicle
6 / 10EPA Fuel Economy & GHG score
13 ft³Cargo volume
90 ft³Passenger volume
Where it sits among compact suvs (2020)
Compared with the 2019 model, the 2020 Terrain is -5 MPG worse at its best.
Every 2020 Terrain trim
| Configuration | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|
| 1.5L · 4-cyl · Automatic 9-spd · Front-Wheel Drive | 26 | 30 | 27 | $2,300 |
| 1.5L · 4-cyl · Automatic 9-spd · All-Wheel Drive | 25 | 28 | 26 | $2,350 |
| 2.0L · 4-cyl · Automatic 9-spd · Front-Wheel Drive | 22 | 28 | 24 | $3,150 |
| 2.0L · 4-cyl · Automatic 9-spd · All-Wheel Drive | 21 | 26 | 23 | $3,300 |
FAQ
Where does the 2020 Terrain rank among compact suvs for MPG?
The 2020 Terrain's 27 MPG combined is above the compact suvs average of 26.4 MPG for 2020.
How much does it cost to fuel a 2020 Terrain per year?
Based on EPA assumptions (15,000 miles/year), estimated annual fuel cost is $2,300 for the most efficient trim.
What is the city and highway MPG of the 2020 Terrain?
The most efficient trim is rated 26 MPG city and 30 MPG highway.