This thesis assesses the ability for econeighborhoods to implement the conditions necessary for sustainable mobility in the suburbs of Paris. Econeighborhoods are a concept pioneered in Northern Europe meant to encapsulate all aspects of sustainable urbanism, with features such as high efficiency housing, urban greening, low waste, walkability and cyclability. This concept was picked up by the French government and econeighborhoods are implemented all over the country. In this thesis, we study how this urban ideal is applied in suburban areas, which display low density and high car use, and whether they can contribute to changing mobility habits. Using three cases in the Paris region, and methods of spatial and network analysis, we study the following features: urban character, accessibility to services, accessibility to workplaces, walkability and cyclability. We find that while econeighborhoods generally provide a satisfactory access to services, walkability and cyclability within them, this is often limited to the econeighborhood itself and not to the surrounding area whatsoever, limiting its potential positive impacts. Due to their limited scale, they also do not provide sustainable access to workplaces, which generally require long commutes, perpetuating car-dependency. We also observe that the pre-existence of the neighborhood and its socio-economic conditions impact the quality of the solutions provided. The study suggests further work in analyzing real lived experiences in these neighborhoods.