On 28 December 1980 the Senate of the Republic approved the Montevideo Treaty of 1980, and its Decree was published in the Official Gazzette on 31 March 1981, and its purpose is to follow the process of the Latinmerican integration and establish on a longue term, gradually and progressively, a common market. In order to do it, the Integration of the Latinamerican Association was created. Under the framework of the Montevideo Treaty of 1980, the United Mexican States and the Republic of Argentina, the Republic of Brazil, the Republic of Paraguay and the Eastern Republic of Uruguay, in which the four last ones are State Members of the Common Market of the South (MERCOSUR) executed on 27 September 2002, the Economic Complementation Agreement No. 55 (ACE 55), which was published in the Official Gazzete on 29 November 2002, and entered into force on 1 January 2003 between the United Mexican States and the Republic of Argentina, the Federal Republic of Brazil, and the Republic of Paraguay. The Appendix I of ACE 55 establish the aplicable provisions to the bilateral commerce in the automobile sector between the United Mexican States and the Republic of Argentina. On 19 March 2019, the United Mexican States and the Republic of Argentina executed the Sixth Additional Protocol to Appendix I "About the Commerce of the Automobile Sector between Argentina and Mexico" of ACE 55, by which both countries agreed to establish from 19 March 2019 until 18 March 2022, importation rates to automovile vehicles under the provisions a) and b) of article 1 of the aforementioned Appendix. Due to this, it is necessary to inform the economic operators and authorities the whole text of the Sixth Additional Protocol previously referred. The publication of this decree does not generate costs nor obligations to private parties.