In last decades, New Product Development (NPD) process has become crucial for the company success. Many efforts have been paid in order to identify methods and tools able to improve NPD, but successful models are still missing or not easily followed. Companies find difficult to implement comprehensive models for improving their NPD process, and often they aren’t even aware on how they actually are performing it. Which are the main critical areas affecting NPD performances inside the organization? Which are the main opportunities of improvement? Which are the gaps to be fulfilled by a company for acting as a best practice? Both at industrial and academic level, there is the need of a global assessment model able to answer to these – and similar – questions. This paper proposes a tentative model.