Mexico Auto Sector Heads for 10% Decline as US Tariffs Bite
MEXICO · INDUSTRY
Key Facts
—What happened: Mexico’s auto exports to the United States fell 11.3 percent in the first quarter of 2026, to US$38.1 billion.
—The trend: Passenger-car exports fell 9.8 percent in 2025 and dropped a further 22 percent in early 2026.
—The cause: Washington charges a 25 percent tariff on Mexican-made cars that fail the trade pact’s origin rules.
—The catch: Cars meeting the pact’s rules still enter duty-free, so certification, not the headline rate, decides who pays.
—Who it hits: The industry generates 3.6 percent of Mexico’s GDP and employs more than one million people.
—What comes next: A fourth negotiating round in Washington in September will tackle the auto rules of origin.
The Mexico auto sector is heading for a decline of about 10 percent this year as a 25 percent United States tariff on cars that fail the trade pact’s origin rules reshapes production lines, supply chains and the government’s industrial plans.
How hard the Mexico auto sector is falling
The numbers come from the United States Commerce Department, cited by Mexico’s El Economista newspaper. Auto exports to the US dropped 11.3 percent year-on-year in the first quarter of 2026, to US$38.1 billion.
That follows a 7.2 percent fall for all of 2025, when shipments totalled US$168.4 billion. The decline is speeding up, not bottoming out.
Passenger cars are bleeding fastest. Their exports fell 9.8 percent last year and collapsed 22 percent in the first quarter of this one.
Trucks and buses fell 18.7 percent in the quarter. Only auto parts, down 1.1 percent, are holding the line.
One tariff, two different industries
The 25 percent tariff splits the Mexico auto sector into winners and losers. Cars certified under the rules of origin of the United States–Mexico–Canada Agreement, known as USMCA, still enter duty-free.
Qualifying is demanding. A vehicle needs 75 percent North American content, 40 to 45 percent of its value built by workers paid at least US$16 an hour, and 70 percent regional steel and aluminium.
Cars that fail those tests pay the full 25 percent. That hits Asian-owned brands hardest, because models from Kia or Nissan often carry more parts from outside North America.
For such models it can now be cheaper to ship directly from Japan or South Korea. A car exported from Mexico should not cost more than the same car from across the Pacific, and analysts say it sometimes does.
How manufacturers are restructuring
The Mexico auto sector’s answer is paperwork and re-engineering at once. Carmakers are re-certifying supply chains, swapping in North American parts and rerouting models that cannot qualify.
Mexico’s government estimates the effective duty on qualifying cars falls to about 15 percent once American content is deducted. That still compares badly with the 15 percent flat rate paid by the European Union, Japan and South Korea.
The stakes are national. The Mexico auto sector produces 3.6 percent of the country’s GDP, 18 percent of manufacturing GDP, and more than a million jobs from Baja California to Puebla.
What the industry wants from Sheinbaum’s government
The Mexican Automotive Industry Association, known as AMIA, has taken its case to Washington directly. In a letter to US Trade Representative Jamieson Greer it asked that no new tariffs be added to the existing ones.
“The implementation of the Section 232 tariffs has already harmed an industry that is vital to the competitiveness of the region and of the United States itself,” wrote AMIA president Rogelio Garza.
At home, the Mexico auto sector wants support to match the pressure. Industry leaders are pressing the government of President Claudia Sheinbaum for help with competitiveness, investment and the transition of supply chains.
In May, AMIA formally asked that the ongoing treaty review be used to eliminate auto tariffs altogether. So far, Washington has shown no sign of agreeing.
What to watch in September and beyond
The fourth negotiating round of the USMCA review is due in Washington in September. Auto rules of origin are the single most contested item on the agenda.
The US side has floated a 50 percent American-specific content requirement, which Mexico has already rejected. No text has been agreed on either side.
The background matters. On 1 July the United States declined to extend the pact for another 16 years, so the treaty now faces a review every year until 2036.
For the Mexico auto sector, that means the uncertainty is permanent unless the September round delivers. Every factory plan now carries a tariff scenario.
Frequently Asked Questions
Why are Mexico’s car exports to the US falling?
Washington applies a 25 percent tariff on Mexican-made cars that fail the trade pact’s origin rules. Passenger-car exports fell 9.8 percent in 2025 and 22 percent in the first quarter of 2026.
What are the USMCA rules of origin for cars?
A vehicle needs 75 percent North American content, 40 to 45 percent of its value made by workers earning at least US$16 an hour, and 70 percent regional steel and aluminium to enter the US duty-free.
How much have Mexico’s auto exports dropped?
Total auto exports to the US fell 7.2 percent in 2025 to US$168.4 billion, then another 11.3 percent in the first quarter of 2026. Only auto parts, down 1.1 percent, are stable.
How important is the auto industry to Mexico?
It generates about 3.6 percent of national GDP and 18 percent of manufacturing GDP, and employs more than one million people, mostly in the northern and central states.
What happens in the September USMCA round?
Negotiators meet in Washington with auto rules of origin as the contested item. The US has floated a 50 percent American-specific content requirement, which Mexico has rejected.
Connected Coverage
The negotiating track is in Mexico’s push for lower US auto tariffs and Ebrard’s tariff mission in Washington, with the Canadian angle in what Canada’s 50 percent tariffs mean for the USMCA review. The rival bet shows up in Chinese cars taking 17 percent of Mexican sales.
Sources: El Economista with US Commerce Department data (7 May 2026); AMIA letter to USTR Jamieson Greer; El Informador (27 May 2026); Baker Institute; USTR Section 232 and 301 notices.
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error
Read More from The Rio Times