2018 head-to-head · Small SUV
2018 GMC Terrain vs GMC Terrain Diesel
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2018 GMC Terrain is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas and $3.70/gal diesel fuel, it costs about $1,661 a year to fuel (28 MPG), versus $1,734 for the 2018 GMC Terrain Diesel (32 MPG). That's roughly $74 a year, or about $368 over five years.
Your numbers
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Fuel cost over 10 years
- GMC Terrain
- GMC Terrain Diesel
Side by side
| GMC Terrain | GMC Terrain Diesel | |
|---|---|---|
| $1,661 | Your annual fuel cost | $1,734 |
| 28 MPG | Combined efficiency | 32 MPG |
| 26 MPG | City | 28 MPG |
| 30 MPG | Highway | 39 MPG |
| 104 cu ft | Passenger volume | 104 cu ft |
| 30 cu ft | Cargo volume | 30 cu ft |
| 316 g/mi | Tailpipe CO₂ (g/mi) | 319 g/mi |
| 6/10 | EPA fuel economy score | 7/10 |
| 6/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Diesel |
| Regular gasoline | Fuel | Diesel |
| 1.5L 4-cyl turbo | Engine / motor | 1.6L 4-cyl turbo |
| 9-speed automatic | Transmission | 6-speed automatic |
| FWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
GMC Terrain vs GMC Terrain Diesel across model years
- GMC Terrain
- GMC Terrain Diesel
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Among 68 2018 small SUVs, the GMC Terrain ranks 13th and the GMC Terrain Diesel 22nd for lowest fuel cost.
The powertrains differ: the GMC Terrain is a conventional gas model, while the GMC Terrain Diesel is a diesel.
Frequently asked questions
Which is more fuel-efficient, the 2018 GMC Terrain or the 2018 GMC Terrain Diesel?
Measured by cost to drive, the GMC Terrain. The GMC Terrain is rated 28 MPG combined and the GMC Terrain Diesel 32 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 GMC Terrain vs. the GMC Terrain Diesel per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.70/gal diesel fuel, about $1,661 for the GMC Terrain and $1,734 for the GMC Terrain Diesel.
GMC Terrain vs GMC Terrain Diesel in other years
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