Project coordination is recognized as one of the most important aspects that should be integrated effectively in project management to guarantee project success. In fact, coordination provides organization the ability to integrate heterogeneous activities for achieving specific targets. In project, when teams are built according to cross-functional approach, coordination is required to enhance communication between all project stakeholders. This article is in search of the relationship between specific project coordination mechanisms, adopted by marketing managers to integrate other functional activities, and project communication efficiency. Methodologically, our research was based on a quantitative questionnaire distributed to 107 functional managers involved in cross-funtional project team in Moroccan SMEs. An appropriate statistical analysis was deployed to examine data collected. Findings show the existence of a positive correlation between project coordination mechanisms and project communication efficiency. Besides, the importance given to marketing managers’ participation in project meetings was found as a factor impacting the amount of time devoted to. Therefore some insights are emphasized to develop research in this field.