In urban transport planning the involvement of residents and other stakeholders is seen as an element of growing importance in promoting sustainable spatial transition. Nevertheless, existing participation practices in urban planning are partially insufficient to address new demands and needs arising from these urban transport problems creating dissatisfaction among stakeholders. Furthermore, participatory planning processes are often criticized for inefficiency. Residents and other actors are disappointed with the lack of opportunities to have influence on the planning process while planners remain uninformed about residents’ concerns, experiences, and the local conditions. In response to this criticism, new concepts like co-creation are developing and spreading worldwide, with the aim of supporting sustainable urban transition. Co-creation allows for integrating the needs and requirements of local stakeholders into urban planning and is often seen as a good lever to solve urban challenges. Therefore, urban planners, policy makers, and citizens are experimenting with co-creation to tackle persistent urban issues, such as climate change adaptation, quality of life, and sustainable transport. Promoting and impeding factors and barriers of implementing co-creation processes are, however, less known. In the HORIZON 2020 project SUNRISE, co-creation is the key concept to develop, implement, assess, and facilitate learning about new ways to address urban mobility challenges at the neighbourhood level. SUNRISE’s objective is to contribute to sustainable urban development by stimulating co-creative processes and problem solutions in neighbourhoods in the field of new mobility concepts and new forms of mobility. Towards this aim, six cities (Bremen, Budapest, Jerusalem, Malmö, Southend on Sea, Thessaloniki) are fostering comprehensive co-creative processes with various actors in specific neighbourhoods with the explicit mandate to implement sustainable mobility solutions. Based on the experiences in SUNRISE, this contribution gives an overview of drivers and barriers in implementing co-creation processes and presents recommendations for successfully co-creating sustainable mobility solutions.