Mexico as the Back Door: How BYD and Chery Might Enter North America

The 100% Section 301 tariff makes direct Chinese-built EV imports economically dead on arrival. The viable workaround is Mexican assembly — and BYD, Chery, SAIC, and Geely are all positioning for it. Whether USMCA actually lets the cars cross the Rio Grande tariff-free is the next political fight.

Verified May 2026

BYD's Mexico plant: where things stand

BYD has been publicly working on a Mexican passenger-EV plant since early 2024, when Reuters first reported the company was scouting sites. As of mid-2026 the broad strokes are confirmed and the specifics are still being negotiated:

Site: three regions have stayed in the shortlist — Nuevo León (near Monterrey), Jalisco, and Aguascalientes. Nuevo León has the strongest existing auto supply chain (Kia, GM, Ford all assemble nearby); Aguascalientes offers the best state incentives.
Capacity: publicly stated targets of 100,000–150,000 vehicles/year on Phase 1, with land optioned for an eventual 300,000/year footprint.
Vehicles: initially Atto 3 and Seal for the Latin American market, where BYD already has dealer networks in Brazil, Colombia, and Mexico itself.
Timeline: groundbreaking has been quietly pushed back from late-2024 to 2025/2026. Earliest realistic production is late 2027.
US export plans:BYD has been deliberately vague. Public framing is "Mexico and Latin America"; private positioning, per Reuters and Nikkei reporting, leaves US export optionality wide open.

Chery, SAIC, and Geely

Chery has been in Mexico longer than BYD. Through its relationship with Mexican retailer Motornation and a small assembly operation in Jalisco (partly inherited from a 2007 GM plant), Chery already sells gas-powered SUVs into the Mexican market and has openly stated EV production plans. Chery's Tiggo 4 and Omoda C5 sub-brand vehicles are the most likely first EVs.

SAIC — the Chinese state-owned giant that holds the MG marque — has had Mexican distribution since 2020 and was reported in late 2024 to be evaluating a Mexican assembly site. MG-branded EVs (MG4, MG ZS EV) already do meaningful European volume; Mexican assembly would give SAIC a route to North America that bypasses the Section 301 stack.

Geely sits in a different position. Its Volvo and Polestar brands already have access to the US market through Swedish/EU and Chinese plants, with the Volvo EX30 — built at Geely's Belgian plant — providing a real-world template for how a Chinese-owned brand sells into the US today. Geely also owns Lotus and Smart, both with their own pathways. A Mexican Zeekr plant has been rumored but not confirmed.

The USMCA rules that decide everything

USMCA — the 2020 successor to NAFTA — allows duty-free trade in autos between the US, Mexico, and Canada only if vehicles meet three stacked tests:

75% Regional Value Content (RVC).At least 75% of the vehicle's net cost must be North American (up from 62.5% under NAFTA). For EVs, the battery pack alone can be 30–40% of the bill of materials — so a Chinese-imported pack essentially defeats RVC by itself.
70% steel and aluminum sourcing. Body-in-white steel and aluminum must be at least 70% North American.
40–45% Labor Value Content.Vehicles must have 40% (45% for pickups) of their content made by workers earning at least $16/hour. That's the rule designed to prevent cars from being built entirely by very-low-wage Mexican labor. It also has the side effect of making BYD-style cost arbitrage harder.

A Chinese-owned Mexican plant that wants USMCA duty-free treatment has to either (a) source batteries from a North American supplier — likely a Korean or Japanese cell maker in Tennessee/Kentucky/Georgia, at meaningfully higher cost — or (b) build a Mexican cell plant itself, which adds 18–24 months and billions in capex. Neither is impossible. Both erode the price advantage that motivated the move.

USTR's enforcement leverage

Even if a Mexican-assembled Chinese-brand EV nominally meets RVC, USTR can challenge it on transshipment or circumvention grounds. The relevant precedents come from steel and solar panels, where Chinese product was found to be passing through Vietnam and Malaysia with token assembly. USTR signaled in late 2024 and again in early 2026 that it intends to apply the same scrutiny to autos. A challenged vehicle can be held at the border for months while content is verified. Even the threat is enough to make automakers over-engineer for compliance.

The bigger lever is the USMCA 2026 review. The agreement contains a sunset / review clause six years after entry into force (mid-2026). All three governments must affirmatively recommit, or the agreement enters a 10-year wind-down. The US is using that leverage to push for tighter Chinese-content provisions; the UAW, US automakers, and a bipartisan Senate coalition are all aligned behind a "close the Mexico back door" revision.

Political resistance

The UAW, the Alliance for American Manufacturing, and a coalition of US automakers have been openly lobbying against any pathway that lets Chinese-brand vehicles reach US dealers duty-free. UAW president Shawn Fain has explicitly named the Mexico route as the union's top trade priority through 2027. Ford and GM have been more measured publicly — they both have their own Chinese joint ventures and don't want to invite reciprocal action — but have backed industry-association positions privately.

The Senate's bipartisan China hawk caucus (Wyden, Brown, Vance, Hawley, others depending on the bill) has introduced legislation that would explicitly bar tariff-free import of vehicles produced at Chinese-owned plants, regardless of assembly country. The bill has not passed; the political temperature suggests something similar will pass after the 2026 USMCA review.

A realistic timeline

Stitching it all together, here's the most likely sequence:

2026: USMCA review concludes with tighter Chinese-content language. BYD breaks ground in Mexico (or announces site if not already). No Chinese-brand car on sale in the US.
2027: First Mexican-assembled BYDs and Cherys for Latin American markets begin production. USTR opens content-verification cases on the first model attempting US export.
2028: First US-market Chinese-brand vehicle (most likely a Chery or MG model with North-American-sourced batteries) — at a price 30–40% below comparable US EVs but still well above what direct import without tariffs would allow.
2029 and beyond: Volume scales if USMCA framework holds. Material risk of a renegotiated framework that explicitly forecloses the route.

For US consumers, the implication is straightforward: don't plan on buying a $20,000 BYD before 2028, and don't assume even 2028 is locked in. The Mexico route is the most viable pathway, but it's a slow, contested one — not the fast arbitrage some headlines have implied.

Frequently asked questions

What's the actual status of BYD's Mexico plant?+

As of mid-2026, BYD has publicly committed to a Mexican passenger-EV assembly plant but has not announced a final site or groundbreaking date. Reuters and Bloomberg reporting through 2024 and 2025 narrowed the site to Mexico's Bajío region — most often Nuevo León, Jalisco, or Aguascalientes — with capacity targets in the 100,000–150,000 vehicles/year range. The Mexican Economy Ministry has confirmed BYD's intent; BYD has been deliberately quiet on US-export plans, framing the plant as Mexico-and-Latin-America-focused. Earliest realistic production: late 2027.

Doesn't USMCA require 75% North American content for tariff-free auto trade?+

Yes, with caveats. The USMCA Rules of Origin require vehicles to meet a 75% Regional Value Content (RVC) test using one of several formulas (net cost is the most common), plus 70% of steel and aluminum sourced from North America, plus a Labor Value Content requirement (40–45% of vehicle content made by workers earning at least $16/hour). A Chinese-owned plant in Mexico that imports its battery packs, motors, and electronics from China would fail RVC. Sourcing those components from North American suppliers would satisfy RVC — but at substantially higher cost, eroding the price advantage.

What's USTR's role here?+

USTR has the authority under Section 301 and several USMCA enforcement provisions to challenge whether vehicles assembled in Mexico genuinely qualify for USMCA duty-free treatment. A vehicle that nominally meets the 75% RVC test but uses Chinese-origin batteries can be flagged for a 'transshipment' or 'circumvention' review. USTR has signaled it intends to scrutinize Chinese-owned Mexican plants closely. The realistic outcome is case-by-case adjudication that adds 12–24 months of regulatory uncertainty per model.

Why is the UAW lobbying against this?+

Two reasons. First, low-cost Chinese-brand EVs assembled in Mexico would compete directly with US-built EVs at GM, Ford, and Stellantis plants — the same plants the UAW just won record contracts at in 2023. Second, the UAW is worried that even US/Korean-owned Mexican plants will use Chinese subassemblies, undercutting the IRA-funded domestic battery supply chain. UAW president Shawn Fain has explicitly called for closing 'the Mexico back door,' and the union has lobbied both the Biden and the current administration for a Chinese-content carve-out in USMCA's 2026 review.

When could a Chinese-brand car realistically be on sale at a US dealer?+

Earliest plausible: late 2026 for trickle imports of vehicles like the Volvo EX30 (built at Geely's Belgian plant — not strictly Chinese-brand but Chinese-owned), and 2027–2028 for a BYD or Chery model assembled in Mexico. Both timelines assume no major USMCA enforcement action and no further Section 301 expansion. A realistic worst case is a 2026 USMCA review that tightens content rules or explicitly bars Chinese-owned assembly, pushing entry to 2029 or later under a renegotiated framework.

Could a Chinese OEM build a US plant instead?+

Politically, almost certainly not in the current decade. Even Volvo (Geely-owned) faced CFIUS scrutiny over its South Carolina plant. A direct BYD or Chery US plant announcement would trigger CFIUS, state-level pushback (especially in non-right-to-work states), and likely a Congressional response. A more plausible route is a joint venture with a US partner — analogous to the GM-SAIC partnership that exists in China — but no US OEM has shown interest in being the first to test those waters publicly.