At the heart of the 2026 GMC Terrain AT4 is a 1.5-liter turbocharged 4-cylinder engine paired with an 8-speed automatic transmission. All-wheel drive comes standard, delivering confident traction across varying road conditions. An off-road-tuned suspension and lifted ride height give the AT4 a leg up when pavement ends. The AT4 also features up to five selectable drive modes, including the AT4-exclusive Terrain mode designed for low-speed crawls over challenging surfaces. For those who like to bring gear along, a factory-installed trailer hitch and wiring harness come standard.

Step inside the Terrain AT4 and you'll find a thoughtfully designed cabin that blends rugged character with everyday practicality. Seating is available for up to five passengers, with cloth and CoreTec seating material that strikes a balance between durability and comfort. Heated front seats and a heated steering wheel come standard, making cold-weather commutes much more comfortable. The rear seats split 60/40, and an underfloor storage compartment along with center console passthrough storage add impressive versatility. An available panoramic sunroof invites natural light into the cabin and enhances the sense of spaciousness for all passengers.

The 2026 Terrain AT4 centers its tech experience around a 15-inch diagonal Premium GMC Infotainment System touchscreen, which is standard across the lineup. Google Built-In compatibility allows drivers to use Google Assistant and Google Maps directly on the touchscreen, making navigation and hands-free communication seamlessly integrated into daily drives. An 11-inch diagonal Driver Information Center keeps key vehicle data front and center. Available wireless smartphone charging keeps devices powered without the clutter of cables. The available AutoSense Power Liftgate lets you open the rear hands-free — just walk up with your key fob and the liftgate does the work. An available Rear Camera Mirror provides an expanded view of what's behind you.

GMC equips the 2026 Terrain AT4 with more than 16 standard safety and driver assistance technologies, giving drivers added confidence on every journey. Standard features include Forward Collision Alert and Adaptive Cruise Control, which help manage speed and spacing in varying traffic conditions. Available technologies expand that protection further, including High Definition Surround Vision and up to eight camera views to assist with parking and maneuvering. Hill Descent Control is also available, providing controlled speed management on steep descents — a particularly valuable feature for the AT4's off-road-oriented audience. These systems work together to support attentive, aware driving without taking the wheel out of your hands.

The 2026 GMC Terrain small SUV is available in three distinct trim levels: Elevation, AT4, and Denali. The Elevation serves as the versatile entry point, featuring the 15-inch diagonal touchscreen, heated front seats, and over 16 standard safety features, with optional packages like the Black Edition and Elevation Premium available to personalize the experience. The AT4 builds on that foundation with off-road-specific upgrades including all-terrain tires on 17-inch Dark Machined aluminum wheels, red front recovery hooks, a front skid plate with steel underbody shield, and the AT4-exclusive Terrain drive mode. At the top of the lineup, The Denali brings luxury touches like perforated leather-appointed front seating, heated and ventilated front seats, heated rear outboard seats, animated LED headlamps and taillamps, and distinctive 19-inch Midnight Silver machined-face aluminum wheels.

The 2026 GMC Terrain AT4 delivers a rare combination of off-road capability, modern technology, and refined comfort in a compact, approachable package. From the turbocharged engine and all-wheel drive system to the expansive infotainment screen and robust safety suite, it's a small SUV that's ready for whatever the day brings. Stop by to explore the Terrain AT4 and discover the trim level that fits your lifestyle best.