The latest round of Canada‑U.S. trade negotiations, led by Trade Minister Dominic LeBlanc and U.S. Trade Representative Jamieson Greer, is centred on a proposed 15 % duty on Canadian‑made vehicles. The talks, which must conclude by Friday midnight, also cover dairy, metals, lumber and autos, with President Donald Trump warning that failure to strike a deal could trigger a 50 % tariff on a range of Canadian imports. According to sources cited by The Globe and Mail, the tentative agreement would lower the existing 25 % U.S. tariff on American content in Canadian‑assembled cars to 15 %, removing a clause Canada had sought for domestic and Mexican inputs.
Automotive experts argue that such a levy would erode profitability for manufacturers operating in Canada, prompting them to scale back or halt plant upgrades and consider relocating production to more favourable jurisdictions. The U.S. content in a typical Canadian‑assembled car sits at roughly 50 %, meaning the effective tariff would land between 6 % and 8 %—a figure that roughly matches assembly labour costs and profit margins. “No carmaker is a charity,” said Greig Mordue, an engineering professor at McMaster University and a former general manager at Toyota Canada. “Over time they will ask where they can earn more.” Peter Frise, an automotive engineering professor at the University of Windsor, warned that the impact remains uncertain until the full text is released, but noted that a 15 % duty would raise vehicle prices for consumers across Canada, the U.S. and Mexico while dampening investment in Canadian plants. “In an industry where margins are typically 6‑8 %, 15 % is substantial,” he added.
Ontario’s auto sector, which accounts for the bulk of Canada’s 1.2 million vehicle output in 2025, is already feeling the strain. The province hosts assembly plants for Honda, Toyota, Stellantis, General Motors and Ford, employing around 105,000 workers. Last year’s 25 % tariffs prompted Honda to shelve a C$15 billion electric‑vehicle programme, Stellantis to shift planned Jeep production from Brampton to Illinois, and GM to close its electric‑van plant in Ingersoll while cutting jobs at Oshawa. Toyota and Honda, which together produce 75 % of Ontario’s output, have kept Canadian production steady for now, though Toyota recently announced plans to double its San Antonio, Texas facility by 2030, and Honda is reportedly evaluating a new North American site, likely in the U.S.
The broader economic fallout extends beyond the automotive sector. The Anderson Economic Group estimates that auto tariffs on Canada and Mexico cost U.S. consumers and businesses US$12.5 billion in 2025, not including levies on steel, aluminium or other goods. Patrick Anderson, the consultancy’s CEO, cautioned that “the burden could shift or grow depending on how this latest trade drama plays out.” Meanwhile, the U.S. has already imposed 15 % tariffs on most foreign‑made cars, prompting American manufacturers to boost domestic content and shift production. Experts warn that the current negotiations could set a precedent that either stabilises North American supply chains or accelerates a shift away from Canadian assembly.
Why it Matters
The outcome of these talks will have far‑reaching implications for both sides of the border. A 15 % auto tariff, even after accounting for U.S. content, threatens to make Canadian manufacturing less competitive at a time when profit margins are already tight. If carmakers decide to postpone or relocate upgrades, the ripple effects could include job losses, reduced investment and a weakened industrial base in Ontario and beyond. For the United States, the stakes involve maintaining a stable supply of vehicles while avoiding higher costs for consumers. The decisions made this week will therefore shape the future of North American auto production, influence employment patterns and set the tone for broader trade relations between the two nations.