2018 · Small SUV · Diesel
2018 GMC Terrain Diesel MPG & fuel economy
The 2018 GMC Terrain Diesel is a small SUV offered in 2 EPA-rated configurations. The most efficient version returns 32 MPG combined (28 city / 39 highway) on diesel. Among 68 small SUVs rated for 2018, it ranks 22nd for lowest fuel cost. At 15,000 miles a year with $3.70/gal diesel fuel, it costs about $1,734 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2018 GMC Terrain Diesel's fuel average is 13.6 km/L (7.4 L/100 km), or 32 MPG combined: 11.9 km/L in the city and 16.6 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 28 | 11.9 | 8.4 |
| Highway | 39 | 16.6 | 6.0 |
| Combined | 32 | 13.6 | 7.4 |
How it ranks among 2018 Small SUVs
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
Terrain Diesel MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 1.6L 4-cyl turbo · 6-speed automatic Terrain FWD |
Diesel | 28 MPG | 39 MPG | 32 MPG | — | $1,734 |
| AWD · 1.6L 4-cyl turbo · 6-speed automatic Terrain AWD |
Diesel | 28 MPG | 38 MPG | 32 MPG | — | $1,734 |
Specs (most efficient configuration)
- Fuel
- Diesel
- Engine / motor
- 1.6L 4-cyl turbo
- Transmission
- 6-speed automatic
- Drivetrain
- FWD
- Passenger volume
- 104 cu ft
- Cargo volume
- 30 cu ft
- Tailpipe CO₂
- 319 g/mi
- EPA fuel economy score
- 7/10
- EPA greenhouse gas score
- 6/10
2018 GMC Terrain Diesel vs. rivals
Compare the 2018 Terrain Diesel
With any other car from any year, including other Terrain Diesel model years. Type a year to jump, e.g. "2015 Accord".
Same year, other powertrains: 2018 GMC Terrain (28 MPG)
Frequently asked questions
What is the gas mileage of the 2018 GMC Terrain Diesel?
Up to 32 MPG combined (28 city / 39 highway).
What fuel does the 2018 GMC Terrain Diesel use?
Diesel.
What is the fuel average in km/L for the 2018 GMC Terrain Diesel?
The 2018 GMC Terrain Diesel's fuel average is 13.6 km/L (7.4 L/100 km), or 32 MPG combined: 11.9 km/L in the city and 16.6 km/L on the highway.
How much does it cost to fuel the 2018 GMC Terrain Diesel per year?
About $1,734 at 15,000 miles a year with $3.70/gal diesel fuel, or $11.56 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.