The evaluation examines the effects of various tools of the common market organization (EU Regulation No. 1308/2013) applicable to the wine sector, such as national support programmes, the permit system for vine plantings, oenological practice standards, marketing, labelling, certification and control and monitoring systems. Information gathered from case studies, stakeholder interviews, and analysis of data at the EU level provided insight on the contribution of wine policy to the objectives of market balance, quality and competitiveness of the EU wine sector. In the 2013-2018 period under review, the economic performance of the EU wine sector improved. National support programmes promoted winegrower productivity, winemaking equipment efficiency and the quantitative and qualitative adaptation of EU wine products to market demand. These factors, together with positive market trends, have contributed to maintaining a high degree of competitiveness of EU wine products in world markets. EU standards on oenological practices and labelling offer guarantees of quality and safety, while the recent adoption of computerized systems have raised the effectiveness of wine certification and control procedures. The added value of the EU framework has been demonstrated, being a key tool for creating a level playing field among member States.