Front seating in the Acadia is firm yet plush, and the second row is adult sized and slides fore and aft to balance legroom with the third row. The third row's a real one, too—though harder to get to than in minivans—and behind it, there's even 20 cubic feet of additional storage space. Plus, folding down the second and third rows of seats yields a flat floor with over 115 cubic feet of space; about the only issue is the rather high cargo floor.
The Acadia's interior is tight and quiet, with excellent damping of road, wind, and engine noise. Build quality and switchgear is also top-notch, and controls are straightforward and will put the driver at ease compared to the complicated interfaces in some luxury crossovers. The only major disappointment in the 2011 GMC Acadia is the overly abundant swaths of hard, hollow-feeling plastic used throughout the instrument panel and center console.