Does anyone know where I can find information on the materials or manufacturing processes of the BMW 5 series?

I am a mechanical design major in my senior year and am trying to locate information of the materials used in the new BMW 5 series.Does anyone know where I can find information on the materials or manufacturing processes of the BMW 5 series?You don't want to go there. All your beliefs that BMW is a quality car with quality materials will be crushed.