On January 11, 2008, Subaru revealed the 2009 Subaru Legacy concept vehicle at the 2009 North American International Auto Show. Marking the twentieth anniversary of the Subaru Legacy, the Legacy concept has been developed to showcase the Legacy's sporting capabilities and features Subaru's Symmetrical All-Wheel Drive system mated to a Horizontally-Opposed Boxer engine. The design concept is based on a larger 108.3 in. wheelbase designed to maximize interior space and accommodate four adults. Sharp design lines flow from the hood, across the roof to the trunk, while the sharp body lines project a sense of strength. Wedge-shaped side rear vision cameras are featured and provide a sense of flow from the momentum of the A-pillar lines. This grille design incorporates a central wing motif that defines the Legacy's Subaru brand identity. The Subaru logo separates a deep central grille shape that is accented by sharp headlamps with a dual vertical-row layout of multiple LED lamps.
The interior design features a striking four-seat layout that showcases the High Definition design theme. Comfort and style are achieved with a mix of touch-screens, cameras and modern surface coverings. The high-tech look blends with comfort through four separate seating areas, a high roofline and generous legroom for all passengers. The center console features a large touch-panel display. In-car entertainment is featured through monitors with multiple functions that are located in the center console, as well as in the rear of the front seat headrests to provide comfortable functionality as well a calm design that creates a relaxed ambiance for passengers. The design is capped off with seats covered in pearl white leather that give off a blue sheen, while black metallic leather has been used for the door trim to create contrast with the instrument panel.