This paper analyses the relationships between the Project Management Offices (PMOs) functions and the results of performance indicators of product development projects, considering the triple constraint: time, cost, quality. A survey was conducted on a sample of 35 Brazilian manufacturing companies, which have a Product Development Process and a support of PMO for product projects. Although the surveyś results pointed out the presence of Project Management Offices on companies' structure, it does not guarantee the success on project´s triple constraints, the benefits management was a PMO function correlated to cost performance. It suggests that if a company structure projects as programs, an effort to guarantee the focus on benefits rather than only on project's results can drive good performance on costs.