When evaluating the 2026 GMC Terrain, understanding its interior dimensions helps you determine if it fits your needs. This guide provides exact measurements for headroom, legroom, shoulder room, cargo space, and overall interior volume across all trim levels.
Seating Capacity and Passenger Volume
The 2026 GMC Terrain seats five passengers across two rows. This two-row configuration balances passenger comfort with cargo versatility.
Front Seat Interior Dimensions
The front cabin provides generous space for driver and passenger:
Front Measurements:
- Front Headroom: 40.58 inches
- Front Legroom: 43.95 inches
- Front Shoulder Room: 57.69 inches
- Front Hip Room: 55.25 inches
The front headroom accommodates taller drivers comfortably, and the 44 inches of front legroom provides ample space to adjust the seat and find your ideal driving position. The 57.7 inches of shoulder room ensures both driver and passenger have adequate personal space.
Rear Seat Interior Dimensions
The second row offers substantial space for passengers:
Rear Measurements:
- Rear Headroom: 39.2 inches
- Rear Legroom: 39.7 inches
- Rear Shoulder Room: 55.7 inches
- Rear Hip Room: 51.0 inches
The 39.7 inches of rear legroom allows adult passengers to sit comfortably without knee-to-seatback contact. The 39.2 inches of rear headroom accommodates most adults sitting upright. The 55.7 inches of rear shoulder room provides adequate width for two adults sitting side-by-side.
Cargo Space Measurements
The Terrain offers flexible cargo capacity:
Cargo Dimensions:
- Cargo Space Behind Second Row: 29.8 cubic feet
- Maximum Cargo Space (Seats Folded): 63.5 cubic feet
With the rear seats upright, the 29.8 cubic feet of cargo space handles groceries, luggage, and sports equipment. Folding down the 60/40 split-folding rear seats expands capacity to 63.5 cubic feet, accommodating camping gear, furniture, or building materials. The split-folding design allows you to fold one side for cargo while maintaining rear passenger seating on the other side.
Exterior Dimensions for Reference
The Terrain’s overall dimensions provide context for its interior space:
Exterior Measurements:
- Overall Length: 181.0 inches
- Overall Width (without mirrors): 74.5 inches
- Overall Height: 65.8 to 66.16 inches
- Wheelbase: 107.5 inches
- Turning Radius: 37.1 feet
The 107.5-inch wheelbase contributes to the interior legroom. The 181-inch overall length keeps the vehicle maneuverable while maximizing cabin space.
Interior Dimensions Across Trim Levels
The interior dimensions remain identical across all three trim levels including the Elevation, AT4, and Denali. The AT4 and Denali trim feature 6.52 inches of minimum ground clearance compared to 5.75 inches on Elevation. This difference is entirely external and does not affect interior headroom or legroom.
Find Your 2026 GMC Terrain at Cable Dahmer Buick GMC of Independence
Visit Cable Dahmer Buick GMC of Independence to experience the 2026 GMC Terrain’s interior dimensions firsthand. Our team can help you explore how these measurements translate to real-world comfort and cargo capacity.
Connect with us
