This study covers the state of the global light metals (advanced high strength steels, aluminium and magnesium) and polymers used in weight reduction of automobiles, examining drivers and restraints for growth, pricing, distribution, legislation, demand and geographical trends. Following these, the market growth for regional and market segments are forecasted. In addition, an in-depth analysis of the substitution trends is performed with respect to body-in-white, exterior, interior and under-the-hood applications. The base year is 2010 with forecasts running through 2017. The market is further divided into four subsegments including automotive metals, engineered thermoplastics, thermosetting composites and high-performance polymers.