Previous literature reported that Participatory Design (PD) results in satisfying products and presents other subjective benefts. PD implies an active involvement of users during all steps of the design process, including during concepts specifcation (contrary to user-centered design, UCD). This study compared the usability and acceptance of truck dashboards resulting either from a PD or from a UCD design processes. Moreover, design concepts from two PD approaches were compared: a collective versus an individual design session. Results showed that concepts resulting from user-centered design and individual design sessions were perceived as more useable and accepted than the concept resulting from the participatory workshop. These fndings question PD benefts and encourage to further explore the different PD approaches in the industrial development of truck dashboards.