This article examines the legal methodology that courts have to employ when they construe domestic law in accordance with European Union directives. It demonstrates that the Court of Justice of the European Union (CJEU) has set up autonomous ‘European methodological rules’. These rules apply together with national legal methods. The relationship between both regimes can be described with the concepts of overlapping, intervention, and Europeanization from the inside. The article thus holds that the doctrine of consistent interpretation possesses a hybrid methodology. The reanalysis of the CJEU’s case law offers answers to some unresolved questions. The article shows how consistent interpretation affects national principles of interpretation. It demonstrates the extent to which domestic judges are required to depart from traditional methods of construction and to what extent European methodological rules broaden the limits of the judicial function as accepted under national law. The contra legem limit is defined, and some of its misinterpretations in legal scholarship are highlighted.