North America’s auto trade fight is moving into a new phase. Mexico has proposed sharply reducing the U.S. tariff burden on vehicles built in the region, and Canadian officials are reportedly backing a similar approach as Ottawa presses Washium U.S. levy on some North American vehicles from 25% to roughly 5% or 10%, while giving Canadian and Mexican content more favourable treatment.
That would mark a significant retreat from the tariff structure President Donald Trump imposed in 2025. But it is far from a settled deal. Washington is simultaneously demanding tougher rules that would force substantially more vehicle content to be made in the United States, leaving negotiators fighting over what “North American” manufacturing should mean in the next version of CUSMA.
A Joint North American Push Takes Shape
Mexico’s proposal is designed to soften one of the most disruptive features of Trump’s auto tariffs without simply returning to the old duty-free system. Under the plan reported by The Wall Street Journal, the maximum U.S. tariff on certain North American vehicles could fall to 5% or 10%, instead of the current 25% rate applied to non-U.S. content. Mexican and Canadian content would receive more favourable treatment, while tariffs would focus more heavily on value originating outside North America.
Canada has not announced a formal joint proposal with Mexico, which is an important distinction. However, Canadian officials are reportedly supportive of a similar tariff-reduction framework, and Ottawa has separately discussed applying U.S. duties only to content originating outside North America. That overlap suggests the two countries are moving toward a common negotiating principle: vehicles built through the continent’s integrated supply chain should not be treated like ordinary imports from overseas.
How the 25% Tariff Actually Works
The headline 25% rate can sound simpler than the tariff actually is. Trump’s 2025 auto proclamation imposed a 25% levy on imported passenger vehicles and light trucks, but CUSMA-compliant vehicles from Canada and Mexico can receive special treatment. For those vehicles, importers can deduct the value of U.S.-made content, meaning the tariff is charged on the remaining non-U.S. portion rather than on the full sticker value of the vehicle.
That structure matters enormously for Canadian assembly plants. A vehicle assembled in Ontario can contain engines, electronics, steel, seats or other components sourced from U.S. factories before crossing the border again as a finished vehicle. Canadian officials have argued that taxing the non-U.S. share still penalizes a supply chain built around repeated cross-border production. Their preferred direction would go further by recognizing Canadian and Mexican content as part of one North American manufacturing system rather than treating it as foreign value.
The Fight Over What Counts as North American
The dispute is ultimately about more than a tariff rate. CUSMA already contains demanding automotive rules of origin. To qualify for preferential treatment, 75% of a passenger vehicle’s value must generally come from North America. The agreement also includes labour-value rules requiring 40% to 45% of auto content to be made by workers earning at least US$16 an hour, while automakers face North American sourcing requirements for steel and aluminum.
Washington wants to tighten that framework considerably. Reuters reported in May that the Trump administration proposed raising the regional-content requirement to 82% and requiring 50% of a vehicle’s value to be produced specifically in the United States. That is a major shift in philosophy. The existing system is designed to strengthen a continental production base. The U.S. proposal would use CUSMA more explicitly to pull investment and parts production into America, potentially at the expense of Canadian and Mexican plants.
Why Canada Has So Much at Risk
For Canada, the stakes are unusually concentrated. The federal government says more than 90% of Canadian-made vehicles and about 60% of Canadian-made auto parts are exported to the United States. The sector supports more than 500,000 workers across the broader economy, including roughly 125,000 direct jobs, and contributes more than $16 billion annually to Canadian GDP. Canada produced more than 1.2 million passenger vehicles in 2025.
Those numbers explain why even a partial tariff reduction could matter. Canada’s 2026 State of Trade report said GDP in motor-vehicle and parts manufacturing fell 1.4% in 2025 after a much steeper 10.7% decline in 2024. Employment in the sector also slipped 3.4% in 2025. For communities built around assembly plants and suppliers in southern Ontario, tariff negotiations are therefore not an abstract trade-policy dispute. They influence production schedules, investment decisions and whether future vehicle programs are assigned to Canadian factories across the country.
Mexico Has Scale — and Growing Pressure
Mexico arrives at the negotiations with greater scale, but significant exposure to U.S. policy. Reuters reported that Mexican vehicle exports to the United States fell nearly 3% in 2025 after roughly three decades of expansion. Mexico also lost about 60,000 auto-industry jobs that year, according to government data cited by Reuters. The country remains tied to the U.S. market, with total U.S.-Mexico goods trade reaching about US$872.8 billion in 2025.
That combination gives Mexico both leverage and urgency. Its factories are central to the production strategies of automakers, but prolonged tariffs can make those plants less competitive for U.S.-bound models. Mexico’s push for a 5% to 10% ceiling is therefore not simply about protecting exports. It is an attempt to preserve the economics of a regional manufacturing network in which companies decide where to build engines, transmissions, electronics and final vehicles based on continental efficiency rather than a tariff wall.
Automakers Are Pushing Back Too
Automakers broadly agree on one point: North America works best as one production platform. In May, seven automotive trade groups urged the Trump administration to extend CUSMA, arguing that the agreement is important to keeping U.S. vehicle manufacturing competitive against Asia and Europe. The organizations represent automakers, dealers and suppliers, including General Motors, Tesla, Toyota, Hyundai and Volkswagen.
Their concern is practical rather than diplomatic. Splitting the agreement into separate bilateral systems, or imposing national-content rules, would add paperwork and make it harder to organize supply chains across three countries. A vehicle may be assembled in one country using major components from the other two, while suppliers operate plants on both sides of a border. Industry groups have warned that dismantling that structure could weaken the efficiencies CUSMA was designed to protect. That gives Canada and Mexico an ally in the debate: companies that also employ large numbers of Americans.
The Consumer Price Question
Affordability is why the tariff debate extends past factory gates. Kelley Blue Book data from Cox Automotive put the U.S. new-vehicle transaction price at $49,855 in July 2026, the highest level of the year. Buyers were already shifting toward cheaper vehicles, while automakers have warned that tariffs can make inexpensive models built in Mexico harder to justify in the market.
That creates an awkward trade-off for Washington. Moving more production into the United States could support domestic investment, but forcing rapid changes to established supply chains can also raise costs. Nissan has been a visible example because it relies on Mexican production for smaller, affordable models. Its chief executive has argued that the supply chain is not configured to make every component in the United States. A lower North American tariff could therefore become a compromise: preserve pressure for more regional sourcing without making entry-level vehicles harder to sell profitably.
A Bigger Trade Deal Is Hanging Over It All
The auto discussion is unfolding inside the Canada-U.S. trade standoff. Ottawa is seeking relief not only on vehicles but also on U.S. tariffs affecting steel, aluminum, lumber and other sectors. Trump has threatened 50% tariffs on roughly $20 billion of Canadian goods beginning August 19, and Reuters reported that Canadian officials were unhappy with Washington’s latest offer to reduce some existing duties.
That deadline gives the auto proposal greater strategic significance. Canada has reportedly consulted industry about what level of tariff could be tolerated if U.S. content remains exempt, while Mexico is pressing a more aggressive 5% to 10% framework. But there is still no announced agreement, and Washington has shown no willingness to restore the old tariff-free status quo automatically. The most realistic outcome may therefore be a negotiated middle ground: lower automotive tariffs, stricter sourcing rules and continued pressure on manufacturers to put more production inside North America.
