The Automotive Industry Guideline on the Biocidal Products Regulation (AIG-BPR) is a practical guide for the automotive industry to comply with the European Biocidal Products Regulation (BPR). The BPR sets rules for approval of active substances, authorization of biocidal products, and placing treated articles on the market. The AIG-BPR was created by a task force of vehicle manufacturers and suppliers and is supported by several associations. It provides practical help for the automotive industry in common processes such as metalworking fluids and water treatment.