Chevrolet Trailblazer vs GMC Terrain: Specs Compared
Also searched as GMC Terrain vs Chevrolet Trailblazer specs — both orientations show this same side-by-side comparison.
The GMC Terrain is the more efficient of the two: it reaches 32 mpg combined versus 31 mpg for the Chevrolet Trailblazer, a 1 mpg advantage and costs about $200 less per year to fuel.
Across 5 measured categories, the Chevrolet Trailblazer leads in 3. Figures are EPA test data, not manufacturer claims.
2021–2026
Chevrolet Trailblazer
Small Sport Utility Vehicle 2WD · 17 configurations
2015–2027
GMC Terrain
Small Sport Utility Vehicle 2WD · 47 configurations
Head-to-head specifications
| Metric | Chevrolet Trailblazer | GMC Terrain |
|---|---|---|
| Best combined MPG | 31 mpg | 32 mpg ✓ |
| Best city MPG | 30 mpg ✓ | 28 mpg |
| Best highway MPG | 33 mpg | 39 mpg ✓ |
| Lowest annual fuel costEPA estimate at 15,000 miles per year | $2,000 ✓ | $2,200 |
| Lowest CO2 output | 287 g/mi ✓ | 316 g/mi |
| Engines offered | SIDI, SIDI; FFV | SIDI, 1.6, SIDI; FFV |
| Transmissions | Automatic 9-spd, Automatic (variable gear ratios) | Automatic 8-spd, Automatic (variable gear ratios), Automatic 9-spd |
| Drivetrains | All-Wheel Drive, Front-Wheel Drive | All-Wheel Drive, Front-Wheel Drive |
| Fuel types | Regular, Gasoline or E85 | Regular, Premium, Diesel |
| EPA class | Small Sport Utility Vehicle 2WD | Small Sport Utility Vehicle 2WD |
| Years covered | 2021–2026 | 2015–2027 |
| Configurations on record | 17 | 47 |
Source: EPA fuel economy records via fueleconomy.gov. Best-case values across all recorded configurations for each model.
Chevrolet Trailblazer vs GMC Terrain dimensions and size
The GMC Terrain is 7.5 inches longer than the Chevrolet Trailblazer on a wheelbase 3.2 inches longer, and 584.2 lbs heavier. Both clear the roughly 200 inches of usable length in a standard single garage bay.
| Dimension | Chevrolet Trailblazer (2026) | GMC Terrain (2026) | Difference |
|---|---|---|---|
| Length | 173.6 in | 181.1 in | 7.5 in |
| Width (excl. mirrors) | 71.3 in | 74.4 in | 3.1 in |
| Height | 65.7 in | 65.7 in | identical |
| Wheelbase | 103.9 in | 107.1 in | 3.2 in |
| Curb weight | 3,014 lbs | 3,598 lbs | 584 lbs |
Width excludes mirrors; add 8–12 inches for mirrors out. Figures are for the newest model year on record for each vehicle. See both drawn to scale.
Chevrolet Trailblazer vs GMC Terrain: what the numbers mean
Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Chevrolet Trailblazer burns about $2,000 of fuel annually against $2,200 for the GMC Terrain. That $200 yearly gap compounds to roughly $1,000 over five years and $1,600 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.
City versus highway split: the Chevrolet Trailblazer is the stronger commuter at 30 mpg city, while the GMC Terrain pulls ahead on the interstate at 39 mpg highway. If most of your driving is stop-and-go traffic the city figure is the one to weigh; for long-distance highway mileage the reverse is true, and the two vehicles effectively swap places depending on how you drive.
Powertrain choice: the Chevrolet Trailblazer is recorded with 2 distinct engine configurations (SIDI, SIDI; FFV), the GMC Terrain with 3 (SIDI, 1.6, SIDI; FFV). Across 17 recorded Chevrolet Trailblazer configurations and 47 for the GMC Terrain, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.
Drivetrain and class: the Chevrolet Trailblazer is offered with All-Wheel Drive, Front-Wheel Drive, the GMC Terrain with All-Wheel Drive, Front-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Small Sport Utility Vehicle 2WD and Small Sport Utility Vehicle 2WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.
Tailpipe emissions: at their cleanest configurations the Chevrolet Trailblazer emits 287 g/mile of CO2 versus 316 g/mile for the GMC Terrain. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.
Trailblazer vs Terrain: common questions
Which is better on gas, the Chevrolet Trailblazer or the GMC Terrain?
The GMC Terrain is the more efficient of the two: it reaches 32 mpg combined versus 31 mpg for the Chevrolet Trailblazer, a 1 mpg advantage and costs about $200 less per year to fuel.
Which costs less to run per year?
By EPA estimates at 15,000 miles a year, the Chevrolet Trailblazer runs about $2,000 a year in fuel at its most efficient configuration, versus about $2,200 for the GMC Terrain — a difference of roughly $200 per year.
What engines do the Trailblazer and Terrain offer?
Chevrolet Trailblazer: SIDI, SIDI; FFV. GMC Terrain: SIDI, 1.6, SIDI; FFV.
Are they in the same vehicle class?
Yes — the EPA classifies both the Chevrolet Trailblazer and the GMC Terrain as Small Sport Utility Vehicle 2WD, so they compete directly.
More Trailblazer comparisons
More Terrain comparisons
Comparison id: chevrolet-trailblazer-vs-gmc-terrain