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GMC Terrain

Photo: GMC Terrain by Kevauto, CC BY-SA 4.0, via Wikimedia Commons. It shows the model, not always this exact version.

GMC · model year 2027

2027 GMC Terrain AWD Denali/AT4

SUV · All-Wheel Drive · Gas · EPA class: Small Sport Utility Vehicle 4WD

EPA figures · 2027fueleconomy.gov
25MPG combined
24/26MPG city / highway
$2,700fuel a year
359 g CO₂ per mile 1.5 L 4-cyl turbo Automatic 8-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.

Where it places

Against fuel-efficient SUVs

Combined MPG25 MPG
Chart average 24 MPGBest 53 MPG
Fuel a year$2,700
Lowest on the chart $1,250Chart average $3,316

The CarCody take

The 2027 GMC Terrain AWD Denali/AT4 is a small 4WD sport utility vehicle with all-wheel drive, a 1.5-liter turbocharged four-cylinder engine and an eight-speed automatic. Its key EPA figure is 25 combined MPG. EPA estimates annual fuel cost at $2700, with 24 MPG city, 26 MPG highway and tailpipe CO2 of 359 grams per mile.

Good to know

  • This listed Terrain configuration uses all-wheel drive.
  • 25 combined MPG with 24 city and 26 highway.
  • 1.5 L turbocharged four-cylinder engine.
  • Eight-speed automatic transmission.

Watch for

  • EPA annual fuel cost is $2700.
  • Tailpipe CO2 is 359 grams per mile.
  • Gasoline fuel is rated at 25 combined MPG.
  • City rating is 24 MPG.

Who it suits. Drivers wanting a small gasoline SUV with all-wheel drive. Shoppers comparing SUV fuel use by combined MPG. Mixed city and highway driving near the 25 MPG rating.

The 2027 GMC Terrain AWD Denali/AT4 is a small all-wheel-drive SUV for buyers who prefer a gasoline turbo four-cylinder and automatic transmission. Its 25 combined MPG rating offers a clear baseline for mixed driving, with 24 MPG city and 26 MPG highway. EPA estimates $2700 in yearly fuel cost and lists 359 grams of tailpipe CO2 per mile. Those figures make fuel budgeting central to the decision, especially if your driving is mostly in town. Compare the combined MPG and annual cost with other SUVs before choosing.

What it is

This 2027 GMC Terrain is a gasoline SUV classified by the EPA as a small sport utility vehicle with 4WD. It uses all-wheel drive, a 1.5 L turbocharged four-cylinder engine and an eight-speed automatic transmission.

The defining figure is 25 combined MPG. That combines the EPA ratings of 24 MPG in city driving and 26 MPG on the highway.

The numbers

The 25 MPG combined rating is the useful middle figure for mixed driving. City trips are rated at 24 MPG, while highway driving is rated at 26 MPG.

Tailpipe emissions are listed at 359 grams of CO2 per mile.

What it costs to run

EPA estimates the Terrain AWD Denali/AT4 will use $2700 worth of gasoline in a year. Your actual bill will change with fuel prices and how much you drive.

How it compares

In a chart organized by combined MPG, this Terrain is represented by its 25 MPG rating. Use that single figure to compare its fuel economy with other SUVs in the fuel-efficient SUV list.

It is also one entry in the wider GMC cars lineup. The available facts do not provide other models' figures, so they cannot show a higher or lower result here.

Who it suits

This SUV suits a driver who wants gasoline power and all-wheel drive in a small sport utility vehicle, with nearly even city and highway EPA ratings.

Its 25 combined MPG gives a straightforward benchmark for comparing similar gasoline SUVs.

Trade-offs

All-wheel drive and the 1.5 L turbo four-cylinder are paired with gasoline fuel and an eight-speed automatic. The EPA split is 24 MPG city versus 26 MPG highway, so the highway rating is only modestly higher.

The listed annual fuel cost is $2700, and tailpipe CO2 is 359 grams per mile.

Verdict

Choose this Terrain when a small SUV with all-wheel drive and a gasoline turbo four-cylinder matches your driving needs.

Its 25 combined MPG is the number to budget around, while the $2700 EPA annual fuel estimate gives the clearest running-cost reference. The 24 city and 26 highway ratings show little difference between the two driving settings. Consider its 359 grams-per-mile CO2 figure alongside those fuel numbers before deciding.

Every figure on record

Efficiency
Combined MPG
25 MPG
City MPG
24 MPG
Highway MPG
26 MPG
Running cost
Annual fuel cost
$2,700
Tailpipe CO₂
359 g per mile
The car
Model year
2027
Body
SUV
EPA size class
Small Sport Utility Vehicle 4WD
Drive
All-Wheel Drive
Powertrain
Engine
1.5 L 4-cyl turbo
Transmission
Automatic 8-spd
Fuel
Gasoline

Questions

What is the 2027 GMC Terrain AWD Denali/AT4's combined MPG?

The EPA combined rating is 25 MPG.

What are its city and highway MPG ratings?

It is rated at 24 MPG in the city and 26 MPG on the highway.

How much does it cost to fuel each year?

EPA estimates annual gasoline cost at $2700.

What drivetrain does this Terrain use?

It uses all-wheel drive and is classified as a small 4WD sport utility vehicle.

What engine and transmission does it have?

The powertrain is a 1.5 L turbocharged four-cylinder engine with an eight-speed automatic transmission.

How much tailpipe CO2 does it emit?

The listed tailpipe CO2 figure is 359 grams per mile.

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