Natural fibre reinforced plastics (NFK) are materials that consist of a plastic that increases its stability through integrated natural fibres. The plastic itself is usually of fossil origin but can also be made of bio-based plastic. Glass or carbon fibre reinforced plastics are the conventional counterpart to NFK. NFK components show high stiffness and strength, but also have a low density. They are mechanically highly resistant and at the same time light (up to 30% lighter than conventional fibre composites) and thus ideally suited for modern vehicle construction. Furthermore, they do not split easily and break without sharp edges, they have good acoustic characteristics and are economically competitive. In the automotive industry, they are used in the serial-production of several models.