sentences:  Standard safety features include anti-lock brakes with electronic brake distribution and brake assist, traction control and six airbags.The Scion xD received the top score of five stars in government crash tests for both front and rear passenger safety in a side impact collision as well as a four-star rating for driver and passenger safety in a front-end collision.The xD also received a four-star rollover rating, which means that there is an estimated 15 percent chance of rollover in a single vehicle collision.