The purpose of this article is to present the role of the Border Guard in detecting vehicle smuggling on the Podkarpackie section of the Polish-Ukrainian border in 2014-2020. Organized transfer of stolen cars from the European Union to the territory of the Commonwealth of Independent States and introduction of cars to the Polish customs territory excluding customs and tax duties is one of the most important threats to the security of Poland and the European Union. Uncontrolled smuggling of stolen vehicles is concentrated mainly in larger border crossing points, and the disclosed attempts show with considerable professionalism, specialization and organization of criminal groups, often with international connections.