← all 2018 GMC Terrain FWD trims
2018 GMC Terrain FWD — 1.5L 4-cyl, Automatic 9-spd, FWD
This 2018 GMC Terrain FWD (1.5L 4-cyl, Automatic 9-spd, FWD) takes regular (87-octane) gasoline. REGULAR
28
MPG combined (26 city / 30 hwy)
$2,036
est. fuel cost / year (today’s prices, 15k mi)
316 g/mi
tailpipe CO₂
At today's AAA national average price ($3.80/gal, 2026-07-05) — the EPA's own price/date assumption isn't exposed in the public dataset, so we recompute this from the EPA's MPG figure and a sourced current price.
Other 2018 GMC Terrain FWD trims
| Trim | Fuel | MPG | Fuel/yr |
|---|---|---|---|
| 1.6L 4-cyl, Automatic 6-spd, FWD | DIESEL | 32 | $2,241 |
| 2.0L 4-cyl, Automatic 9-spd, FWD | PREMIUM | 24 | $2,925 |
EPA fuel type: Regular · class: Small Sport Utility Vehicle 2WD · engine: 1.5L 4-cyl turbo · transmission: Automatic 9-spd · drive: FWD · MPG retrieved 2026-07-24.