By Natalia SiniawskiMEXICO CITY (Reuters) -Mexico's auto industry warned of a "complex outlook" ahead of the 2026 review of the United States-Mexico-Canada Agreement (USMCA), with executives citing concerns over tighter rules of origin and scrutiny of Asian content in components. Speaking at the CIAN automotive conference, heavy-vehicle manufacturers expressed concerns about meeting current USMCA trade requirements while adjusting to existing rules. The agreement mandates that a certain percentage of vehicle parts originate from North America to qualify for tariff-free access. The USMCA, which replaced the North American Free Trade Agreement in 2020, is scheduled for review in 2026. Rogelio Garza, head of the Mexican Association of the Automotive Industry (AMIA), called for increased coordination among industry groups across North America, stating, "it's the same industry."