2015 GMC Terrain FWDFuel Economy & MPG Ratings
Photo: Jim Hudson Buick/Pontiac/GMC/Saab, http://www.jimhudsonsuperstore.com/. CC BY 3.0. via Wikimedia Commons
Real-World MPG
Based on 1 owner report via EPA fueleconomy.gov
Driving mix: City 60% / Highway 40%
Source: EPA fueleconomy.gov “Your MPG” owner submissions. Real-world results vary by driver behavior, conditions, and equipment.
Owner reported MPG for this vehicle averages 25.4 real world MPG based on 1 owner report. EPA combined rating is 26 MPG.
Trim Comparison
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic 6-spd | Gasoline or E85 FFV | 22 | 31 | 26 | $2,600 |
| Automatic 6-spd | Regular | 22 | 31 | 26 | $2,600 |
| Automatic 6-spd | Regular | 17 | 24 | 19 | $3,550 |
Based on gasoline at $3.67/gal, 15,000 miles/year
vs. average new vehicle
Environment
- CO₂ Tailpipe Emissions
- 347 g/mile
- Annual Petroleum Consumption
- 11.4 barrels
Specifications
- Engine
- 3.6L 4-cyl
- Transmission
- 6-speed Automatic
- Drivetrain
- FWD
- Body Style
- SUV/Crossover
- GVWR
- Class 1 (≤6,000 lbs)
Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.
Engine & Efficiency Details
Source: EPA fueleconomy.gov
- Engine Size
- 2.4L, 4-cylinder
- Induction Type
- SIDI; FFV
- Fuel Type
- Regular Gasoline
- Alt Fuel
- E85
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $2,590/yr | — |
| California | $5.957/gal | $3,437/yrHIGHEST | +$847 |
| Texas | $3.888/gal | $2,243/yrLOWEST | $-347 |
| Florida | $4.136/gal | $2,386/yr | $-204 |
| New York | $4.522/gal | $2,609/yr | +$19 |
| Ohio | $4.510/gal | $2,602/yr | +$12 |
| Washington | $5.591/gal | $3,226/yr | +$636 |
| Colorado | $4.618/gal | $2,664/yr | +$74 |
| Minnesota | $4.344/gal | $2,506/yr | $-84 |
| Massachusetts | $4.448/gal | $2,566/yr | $-24 |
Calculated at 15,000 miles/year (EPA standard assumption) using 26 MPG combined. Regular gasoline prices. Actual costs vary.