The 2009 Subaru Legacy is a bit smaller inside than many mid-sizers, but its cabin is well-fitted.
Edmunds says “the backseat is a lowlight, however—while it's comfortable enough for two average-sized passengers, leg- and shoulder-room are unusually tight compared with other midsize sedans.” On the other hand, Kelley Blue Book contends "most backseat passengers should find the Legacy plenty accommodating for trips across town and beyond." The Washington Post reports "seating for five people" aboard the Legacy, and ConsumerGuide points out "plenty of legroom, but headroom is tight for taller riders"—an impression confirmed at Motor Trend, which weighs in with "poor rear-seat headroom."
ConsumerGuide acknowledges that 2009 Subaru Legacy "sedans have a wide trunk opening and low liftover. The hinges are shrouded to avoid cargo damage, but they take up some space. Standard 60/40 split rear seatbacks fold almost flat." Edmunds confirms this: “The Legacy's trunk is similarly undersized at 11.4 cubic feet, though a ski pass-through and fold-down rear seats help make the most of the car's hauling capacity.” The Washington Post reports that 2009 Subaru "luggage capacity is a smallish (for a midsize sedan) 11.4 cubic feet."
ConsumerGuide says "assembly quality has been good on models tested," but "despite a revamped interior, materials are nothing special." However, Edmunds proclaims Subaru 2009 interior materials are "excellent, and style, fit and finish are competitive with more expensive European marques." Cars.com notes that most Subaru 2009 updates "are related to new equipment...the steering wheel has 16 buttons—a tricky layout where a wrong move could inadvertently remap the accelerator's response or downshift the transmission."
ConsumerGuide reports "the turbocharged engine is subdued and refined," though "some testers complain of body drumming over broken pavement," and "a fair amount of wind and tire noise filters into the cabin at highway speeds."