At the Hanover Fair in April 2018, the Bioconcept-Car was presented as a model for the future of sustainable mobility. Likewise, a car made of cellulose nanofiber was presented at the Tokyo Motor Show in 2019. Various additional automotive applications for bio-based materials have been developed, some of which are already in use in cars. However, supportive measures for stimulating their market acceptance are needed. Based on a mix of research methods, this article describes how ecolabels, sustainability standards, and regulations might support the market uptake of bio-based car components. In addition, comparison with three other types of bio-based products are provided. The article ends with suggestions for future market development activities.