Just like every Subaru, the 2013 Impreza has their Ring-Shaped Frame Reinforcement body structure with extensive use of high-tensile steel in body structure for strength and safety. All 2013 Impreza models feature a driver’s knee airbag on a roster of safety features that also includes standard front side pelvis/torso airbags and side curtain airbags that offer front and rear outboard seat coverage. The passenger-seat front airbag features a shell-type design with a center groove, thus exposing the passenger to less impact force upon deployment. The seatbelts have pretensioners and force limiters.