2020 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 28.5 real world MPG based on 1 owner report. EPA combined rating is 27 MPG.
Trim Comparison
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic 9-spd | Regular | 26 | 30 | 27 | $2,500 |
| Automatic 9-spd | Premium | 22 | 28 | 24 | $3,400 |
Based on gasoline at $3.67/gal, 15,000 miles/year
vs. average new vehicle
Environment
- CO₂ Tailpipe Emissions
- 325 g/mile
- Annual Petroleum Consumption
- 11.0 barrels
Specifications
- Engine
- 2L 4-cyl
- Transmission
- 9-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
- 1.5L, 4-cylinder
- Induction Type
- Direct Injection
- Efficiency Tech
- Auto Start-Stop
- Fuel Type
- Regular Gasoline
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 | $2,494/yr | — |
| California | $5.957/gal | $3,309/yrHIGHEST | +$815 |
| Texas | $3.888/gal | $2,160/yrLOWEST | $-334 |
| Florida | $4.136/gal | $2,298/yr | $-196 |
| New York | $4.522/gal | $2,512/yr | +$18 |
| Ohio | $4.510/gal | $2,506/yr | +$12 |
| Washington | $5.591/gal | $3,106/yr | +$612 |
| Colorado | $4.618/gal | $2,566/yr | +$72 |
| Minnesota | $4.344/gal | $2,413/yr | $-81 |
| Massachusetts | $4.448/gal | $2,471/yr | $-23 |
Calculated at 15,000 miles/year (EPA standard assumption) using 27 MPG combined. Regular gasoline prices. Actual costs vary.
NHTSA Safety Ratings
Source: NHTSA (nhtsa.gov)Crash Test Scores
| Front Crash — Overall | |
| Front Crash — Driver Side | |
| Front Crash — Passenger Side | |
| Side Crash — Overall | |
| Side Crash — Driver Side | |
| Side Crash — Passenger Side | |
| Side Pole Crash | |
| Rollover | |
| Rollover Probability | 16.4% |