Improvement in processing, material substitution, light weighting, and recycling have contributed immensely to the cause of sustainability in the materials cycle. This chapter discusses some of the key indicators of sustainability that have direct relevance to advanced high-strength steels (AHSS) used in a vehicle. The discussion covers the major contributor to greenhouse gas emissions, production routes for manufacturing crude steel, and an optimized index guideline for selecting the best material. Details on the benefits of AHSS on the life cycle of vehicles are provided. The chapter also provides information on recycling and the economics of AHSS.