Audi strives to help protect the environment in all aspects of our vehicle manufacturing. Proactive environmental protection prevents negative influences such as noise and emissions through advance planning or new technologies (water-soluble paints, advanced engine management, economical driving). Corrective environmental protection prevents negative effects of existing conditions (such as effluent treatment, catalytic converter, noise insulation). In the automotive industry, environmental protection starts when a new vehicle or production facility is planned and built, and continues through to the reprocessing or recycling of the materials previously installed or used. The driver can also make a contribution during use through economical and conscientious operation.