The European authorities have taken a crucial step towards sustainable mobility byhighlighting the importance of shared mobility. Carsharing, part of the sharing mobility system, hasbeen kindly adopted by many countries in Europe and North America since it removes nine tothirteen vehicles from the road. Carsharing has been around for almost a century, and its adoptionhas been different in different countries. Despite its popularity, a lower uptake has been in Sweden,where this study investigated the research question: How can P2P carsharing services be designedto overcome the challenges hindering their adoption in Sweden? This study investigated andanalysed the research question using a qualitative research approach by conducting 11 semi-structured interviews involving active and potential users. This study generated three challenges,trust issues, limited supply and user experience. The results of this study contribute to a betterunderstanding of the challenges faced by two perspectives, active and potential users. Last but notleast, the results generated in this study should be seen as an impetus for future research whenexploring and designing future P2P carsharing services.