Key Facts
—What. Mexico has applied a 50% tariff to cars from countries without a trade agreement with it, China among them, since 1 January 2026; vehicles with engines under 1.0 litre are exempt.
—The law. The Senate approved tariffs of 5% to 50% on 1,463 tariff lines on 10 December 2025, by 76 votes to 5 with 35 abstentions.
—The workaround. Hyundai switched its Creta SUV supply for Mexico from Indonesia to Vietnam, and Vietnam-built units began arriving in August.
—The market. Mexico sold 1,144,002 new light vehicles from January to September 2026, up 5% and a record for the period.
—Latest. On 13 October Mexico scrapped its 10% duty on car assembly parts for five years; the decree does not touch the 50% car tariff.
—Prediction markets. Kalshi, regulated in the US by the CFTC, prices a U.S.–Mexico interim trade agreement in 2026 at 41% (20 October 2026, 6:00 a.m. ET).
—Power Index Mexico ranks 2nd of 14 in The Rio Times Latin America Power Index, with 71.4 points (October 2026 edition).
—Still unknown. How much the tariff has slowed Chinese-brand sales, and whether other carmakers will copy Hyundai’s rerouting.
Mexico has charged a 50% tariff on finished cars from countries without a trade deal with it, China included, since 1 January 2026, with an exemption for engines under 1.0 litre. Ten months on, at least one big carmaker, Hyundai, has rerouted its supply chain while sales hit a record.
The tariff matters to US readers because Mexico is negotiating with Washington over the USMCA, the North American trade pact, where Chinese content in the car supply chain is a central issue. It also decides how much room Chinese brands have in the market next door.
What the Tariff Law Does
The Mexican Senate approved the law on 10 December 2025 by 76 votes to 5, with 35 abstentions, after the lower house had passed it. It took effect on 1 January 2026 and raises tariffs of 5% to 50% on 1,463 tariff lines, covering products from China and other countries without a Mexican trade agreement.
The law covers 141 tariff lines in auto parts, 308 in clothing, 398 in textiles and 148 in steel. The original plan allowed rates up to 50%, but most rates were set between 20% and 35%.
Opposition senators warned that the duties would raise production costs in industries that rely on Asian inputs, the car industry above all. Finished cars from countries without a trade deal pay 50%, while vehicles with engines under 1.0 litre are exempt, according to Expansión.
How Carmakers Are Adapting
Hyundai switched the source of the Creta it sells in Mexico, one of its best sellers, from Indonesia to Vietnam over six months. Units built in Vietnam began arriving in August, the business magazine Expansión reported on 23 July.
Vietnam belongs to the CPTPP, a Pacific trade pact that includes Mexico, so its cars avoid the 50% duty that Indonesian imports face. Hyundai sold 8,541 Creta units in Mexico in the first half of 2026.
The company is also studying a Grand i10 with an engine under 1.0 litre, to qualify for a tariff exemption. The current 1.2-litre model is imported from India, which also lacks a trade agreement with Mexico.
Record Sales, Slower Outlook
Mexico sold 1,144,002 new light vehicles from January to September 2026, 5% more than a year earlier and above the previous record for the period, set in 2016. September sales reached 129,288, up 8%.
Nissan led with 197,080 units, a 17.23% share, followed by General Motors with 146,658 and Volkswagen group with 125,951. Some Chinese brands still grew fast, with Jetour-Soueast delivering 4,116 vehicles from January to August, 288.3% more than a year earlier, according to El CEO.
Guillermo Rosales, president of the dealers’ association AMDA, expects slower growth in the last months of 2026. He said Chinese companies may now pass the 50% tariff on to buyers.
The Latest Move: A Parts Tariff Cut
On 13 October Mexico published a decree in its official gazette that removes the 10% duty on car assembly parts under tariff line 9803.00.01 for five years. It took effect on 14 October, and our report on the decree explains the mechanics.
On 16 October the Economy Ministry clarified that only companies with plants in Mexico and a bonded-warehouse permit can use the exemption, which, the ministry said, limits it to 11 light-vehicle makers. The ministry said it would set minimum vehicle output and cap parts imports in proportion to production, and require vehicle identification numbers and tracking data for imported parts.
The decree changes only the parts line, so finished cars from non-treaty countries still pay 50%. The aim, the ministry said, is to keep jobs and attract new production lines to Mexico.
What It Means for US Readers
The tariff taxes Chinese-brand imports in a market of 1.1 million sales over nine months, which tests how far Chinese carmakers can grow next to the United States. It also sits behind the USMCA review talks, where Washington has raised Chinese content and investment in Mexico.
Mexico has also sought relief from US tariffs on its own cars and steel in the USMCA talks, as we reported earlier this month. For American carmakers that build in Mexico, the parts decree lowers costs, while the 50% wall keeps Asian-built rivals out.
What Is Not Known
No source we reviewed separates Chinese-brand sales before and after the tariff, so its exact effect on those brands is unmeasured. Dealers expect a slowdown, but the data to confirm it is not yet published.
It is unclear whether other carmakers will copy Hyundai’s move to Vietnam. It is also not known whether Mexico and the United States will strike a USMCA deal that changes how Chinese content is treated.
What to Watch
INEGI, Mexico’s statistics agency, is due to publish September trade data on Tuesday 27 October. INEGI’s flash estimate of third-quarter GDP follows on Friday 30 October.
What Prediction Markets Say
- Kalshi, “Which USMCA outcomes will occur in 2026?”: U.S.–Mexico interim agreement 41%, U.S.–Canada interim agreement 26%, trilateral revised deal 24%, formal 16-year extension 12% (13,185 contracts traded).
- Polymarket, “USMCA extended in 2026?”: 8% (US$11,531 traded).
Prices as of 6:00 a.m. ET, 20 October 2026. Prices are bets, not polls; Kalshi is regulated in the US by the CFTC.
Why we show this: prediction markets turn real-money bets into a live probability that moves within minutes of the news, which is why investors, campaigns and newsrooms in the United States now follow them closely. We show them next to polls and official results, never instead of them.
Sources
Mexican Senate vote, Expansión · Hyundai Creta move, Expansión · Vehicle sales to September, Tiempo · Economy Ministry clarification, Crónica · Diario Oficial de la Federación · Kalshi USMCA market
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief
In depth
Frequently Asked Questions
Is Mexico’s 50% tariff on Chinese cars in force?
Yes. Finished cars from countries without a trade agreement with Mexico, China among them, have paid 50% since 1 January 2026, and engines under 1.0 litre are exempt.
Did the October parts decree change the car tariff?
No. The 13 October decree removes a 10% duty on assembly parts for makers with Mexican plants, and finished cars from non-treaty countries still pay 50%.
How are carmakers avoiding the 50% tariff?
Hyundai switched Creta supply for Mexico from Indonesia to Vietnam, which has a trade pact with Mexico through the CPTPP. It is also studying a smaller engine for the Grand i10.
Are car sales in Mexico falling because of the tariff?
Not so far. Mexico sold 1,144,002 new light vehicles from January to September 2026, up 5% and a record for the period, though dealers expect slower growth in the final months.