The 2027 GMC Terrain carries 29.8 cubic feet behind its second row and 63.5 cubic feet with the 60/40 split-folding rear seat down. Both figures are for a five-seat, two-row compact SUV, which means the useful question is not how big the number is but which of the two you will be living in. Most owners spend almost all their time on the first one.

Allen Tillery Buick GMC sells the Terrain to families across Benton, Bryant, Malvern, Arkadelphia, Hope and Little Rock, and a fair share of them are running to Hot Springs National Park on a Saturday and to a soccer field in Hot Springs Village on a Sunday. Behind the back seat there is 29.8 cubic feet, and 63.5 with the second row folded — measured by configuration and by row, with what actually fits in each.

Cargo Volume and Configurations

Two published configurations, and the gap between them is 33.7 cubic feet.

Configuration	Volume	What it means day to day
Second row up	29.8 cu ft	A week of groceries for four, or two large suitcases and carry-ons, with five people aboard
Second row folded	63.5 cu ft	A flat-pack bookcase, a mountain bike with the front wheel off, or a dorm move in one trip

The rear seat splits 60/40, so the far more common configuration is neither of the above: one side down for something long, one side up for a passenger.

Interior Dimensions by Row

Measurement	Front row	Second row
Head room	40.6 in	39.2 in
Leg room	44.0 in	39.2 in
Shoulder room	57.7 in	55.7 in
Hip room	Not published separately	50.8 in

Front leg room of 44.0 inches is generous for a compact SUV and it is the reason taller drivers get on with the Terrain. Second-row leg room of 39.2 inches puts two adults behind two adults comfortably; three across the back works for a school run rather than a long drive.

Seating Configurations and Flexibility

Five seats, two rows, one folding pattern. The 60/40 split-folding rear seat is standard on Elevation, AT4 and Denali.

Seat material runs heated premium cloth on the Elevation, premium cloth and CoreTec in Forest Storm with Mahogany accents on the AT4, and perforated leather-appointed on the Denali, where the front seats are heated and ventilated and the rear outboard seats are heated. CoreTec seating material is available on the Elevation with the Elevation Premium edition, which is the option worth knowing about if you carry wet gear or dogs.

Child seats fit either outboard position in the second row comfortably; the middle position is usable but tight with two seats already installed, which is the normal picture for a compact SUV.

Cargo Features and Accessibility

Three things do most of the work here, and two of them are standard.

Feature	Availability	Why it matters
Rear cargo underfloor storage	Standard on every Terrain	Where wet gear, a recovery strap and the things you do not want sliding around actually live
Front centre console passthrough	Standard on every Terrain	The difference between a bag on the passenger seat and a bag out of the way
60/40 split-folding rear seat	Standard on every Terrain	One side down for something long, one side up for a passenger
AutoSense power liftgate	Available; included with the Elevation Premium edition	Hands-free opening with the key fob in a pocket, which is the point when both hands are full
Roof side rails	Available; brushed aluminum with the Elevation Premium edition, black with the Black Edition	The mounting point for a box or a bike carrier when 63.5 cubic feet is not enough
Panoramic sunroof	Available on Elevation, AT4 and Denali	Adds light rather than space; it does not reduce the published cargo figures

What Fits in the 2027 GMC Terrain?

Family-Focused Features

Heated front seats and a heated steering wheel are standard on Elevation, AT4 and Denali; the Denali adds heated rear outboard seats, which is the one that matters when the back row is children in January. Dual-zone automatic climate control is available on the Elevation with the Elevation Premium edition. Google built-in on the 15-inch touchscreen handles navigation and messaging by voice, which keeps hands where they belong. Ice, not snow, is what closes roads in this part of the state, and it arrives on bridges and shaded grades before it touches open pavement, which is worth remembering when you are deciding between front- and all-wheel drive on a family car.

Use Cases for Garland County Families

A Saturday at Hot Springs National Park with two children, a stroller, a cooler and a dog is a seats-up trip, and 29.8 cubic feet handles it without folding anything. A weekend at a rental in Hot Springs Village with bikes is a 60/40 trip: one wheel off, one bike upright behind the folded side, one passenger still in the back. A run to a big-box store on the four-lane for something flat-packed is a seats-folded trip, and 63.5 cubic feet takes a bookcase without a roof box. If the trailer comes along, the available Trailering Package is rated to 1,500 lbs on a conventional ball hitch when properly equipped, and the underfloor bin is where the straps go.

Cargo and Interior FAQs

More on the 2027 Terrain