Canadian Auto Suppliers Face a 70% Sales Collapse as U.S. Tariffs and EV Pullback Hit Windsor Hard

The numbers coming out of Windsor, Ontario right now are striking. Jahn Engineering, a tool and die shop that has served automakers on both sides of the border for years, has seen its sales fall nearly 70% since U.S. policy changes kicked in. The company has already made layoffs. It is not alone.

• The Fact: Canadian auto supplier sales are collapsing as U.S. tariffs rise from 0.1% to 5.8% on average, and major automakers cancel or delay EV programs that suppliers had tooled up to serve.
• The Delta: The disruption is not just tariff-driven. GM’s cancellation of specific EV projects hit suppliers like NARMCO Group with direct order losses, separate from any trade policy.
• The Buyer Impact: If you are tracking North American EV production timelines or supply chain stability, the Windsor corridor is one of the clearest stress tests happening right now.

Windsor’s Supply Chain Is Absorbing a Two-Front Hit

Canadian automotive suppliers in the Windsor-Detroit corridor are absorbing simultaneous pressure from two directions: rising U.S. tariffs on Canadian goods and the collapse of EV programs that suppliers had already invested in tooling and capacity to support. The combination has created order shortfalls that individual companies cannot plan around.

The Bank of Canada reported that the average U.S. tariff on Canadian goods has gone from 0.1% to 5.8% over the past year. That shift is now dragging Canada’s 2026 growth forecast down to 1.1%, from 1.7% in 2025. For manufacturers with thin margins on precision parts, a tariff jump of that size is not an accounting adjustment. It changes whether a contract is profitable at all.

NARMCO Group took direct losses when GM canceled EV projects. Meanwhile, U.S. steel tariffs raised input costs for Canadian manufacturers across the board. This is the downstream effect of what we covered earlier this year when Detroit’s three major automakers collectively wrote off $53 billion in EV strategy retreats. When GM pulls an EV program, the ripple goes immediately to the supplier network that spent the past two years building for it. And GM has already cut more than 3,300 EV workers across its U.S. plants since federal tax credits expired.

Trump’s Canada Policy Adds Political Risk on Top of Economic Pressure

Beyond tariffs, the political context around U.S.-Canada trade has grown genuinely unpredictable for business planners. Trump threatened to block the opening of the Gordie Howe International Bridge between Windsor and Detroit. He also floated 100% retaliatory tariffs after Canada approved imports of 49,000 Chinese EVs. White House officials went so far as to meet with Alberta separatists, a move read in Canada as direct interference in domestic politics. Trump has also publicly questioned the relevance of the USMCA, the agreement he once described as “the largest, fairest, most balanced, and modern trade agreement ever achieved.”

Canada’s decision to allow Chinese EV imports was covered here in detail. As we reported when Prime Minister Carney struck that deal in January, it broke rank with Washington on trade at a moment when the North American auto industry could least afford a fracture. Canada’s own auto lobby warned Carney that the Chinese EV deal was making an already difficult U.S. trade negotiation worse. Trump’s threatened 100% tariff response is the other side of that bet going wrong.

For suppliers in Windsor, the problem is not just the current tariff rate. It is that no one can confidently model what comes next. Investment in new programs requires multi-year commitments. A policy environment where bridge openings can be threatened and trade agreement relevance can be questioned in public makes those commitments very hard to justify.

Suppliers Are Diversifying, But Auto Revenue Still Dominates

Some companies are not waiting for policy to stabilize. Jahn Engineering and Lanex Manufacturing have both started moving into defense, nuclear energy, and modular housing. These are logical pivots for precision manufacturers with machining and fabrication capacity. The problem is that automotive work still generates the majority of their revenue. Diversification takes years to build, and the losses are happening now.

Windsor Mayor Drew Dilkens put it plainly: “We will always love Americans. You’re our close friends.” It is a diplomatic statement from someone watching his city’s industrial base take damage in a trade dispute that Windsor did not start and cannot resolve. The optimism is real, but it is not a production plan.

This mirrors what has happened on the U.S. side of the border. America’s $28 billion Battery Belt collapsed into stalled construction sites and mass layoffs after federal EV subsidies expired. The subsidy removal that hurt U.S. battery plant workers is the same policy shock now working its way through Canadian supplier shops. The geography changes; the mechanism is the same.

It is also worth noting that tariff relief has been applied unevenly. Trump granted auto industry tariff exemptions in April 2025 after heavy lobbying from U.S. manufacturers. Those exemptions applied primarily to U.S. domestic content. Canadian-sourced parts meeting USMCA rules of origin received some relief, but Canadian suppliers had far less lobbying leverage in Washington than the Detroit Three, and the gap between what U.S. assemblers negotiated and what Canadian parts makers absorbed is part of why the damage is landing harder north of the border.

EVXL’s Take

What’s happening in Windsor is the clearest real-world evidence yet that EV policy reversals don’t just affect automakers. They cascade. A GM EV cancellation that shows up as a write-down in a Detroit earnings call shows up as a 70% sales drop at a tool and die shop in Ontario. The supply chain doesn’t care about the political framing.

Canada’s decision to allow Chinese EVs was always going to invite retaliation. We said as much in January. The 49,000-unit import deal may have strategic logic for Ottawa’s long-term trade diversification, but it handed Washington a clear pressure point at the worst possible moment for Canadian auto suppliers who were already absorbing program cancellations.

The diversification moves into defense and nuclear are smart in principle. But they take three to five years to generate meaningful revenue, and the companies making those pivots still need to survive the next 18 months. As of early 2026, I don’t see USMCA renegotiation producing concrete tariff rollbacks before Q1 2027 at the earliest. Expect more layoffs in the Windsor corridor through Q3 2026 unless that timeline moves up. And even if tariffs ease, canceled EV programs don’t automatically come back.

The broader lesson: market-driven EV adoption is more durable than subsidy-dependent adoption, but pulling subsidies at speed while simultaneously launching a tariff offensive is too much policy shock for a supply chain to absorb without real casualties. Windsor is paying that bill right now.

Source: CBT News

Editorial Note: AI tools were used to assist with research and archive retrieval for this article. All reporting, analysis, and editorial perspectives are by Haye Kesteloo.