Trade tensions around the US-Mexico-Canada Agreement, rising Chinese vehicle production in Mexico and Canada, and talk of new tariffs are putting a fresh spotlight on North American auto parts and supply chain stocks. These shifts could matter for anything tied to vehicle production, cross border sourcing, and joint ventures with Chinese automakers. For investors, the question is which stocks might benefit if capital and production continue to build in the region, and which could face higher policy risk. This article breaks down 3 stocks from our screener that are closely exposed to this news.

Lear (LEA)

Overview: Lear Corporation supplies carmakers around the world with the two things every modern vehicle needs, seating and electrical systems, from seat frames and premium materials to wire harnesses, control modules, software and cybersecurity for both internal combustion and electric vehicles.

Operations: Lear generates most of its revenue from Seating at about US$17.5b, with a further US$6.3b from its E-Systems segment and an adjustment recorded in Other.

Market Cap: US$6.8b

Lear provides exposure to both physical content in the car and the electrical backbone that is increasingly important as more software and electronics go into vehicles. This matters as new plants in Mexico and Canada look for established suppliers. The company is talking openly about tariff exposure and recovery with customers, and its large North American footprint and USMCA-compliant sourcing could be an advantage if more production is reshored or reconfigured. At the same time, one-off losses, E-Systems headwinds, trade policy risk and signs of insider selling indicate this is not a simple set-and-forget story. For investors who want to understand whether the current pricing reflects that balance, there is more to consider around Lear’s earnings quality and contract pipeline.

Lear’s reshoring upside and tariff talk raise a key question: are markets fully pricing the balance between its seating scale and E-Systems headwinds, or missing a crucial twist in the 4 key rewards and 3 important warning signs?

Martinrea International (TSX:MRE)

Overview: Martinrea International is a Canadian auto parts supplier that designs and manufactures lightweight metal structures and propulsion components for global carmakers, from body and chassis assemblies to brake lines, fluid systems and parts for electric vehicles.

Operations: Martinrea generates essentially all of its CA$4.8b revenue from Auto Parts & Accessories, with major contributions from Mexico, the USA, Canada and Germany within its North American and European manufacturing footprint.

Market Cap: CA$708.5m

Martinrea International sits in the middle of the USMCA story, with a large footprint in Mexico and Canada, a focus on lightweight structures and e-mobility parts, and management openly pushing for tighter North American content rules and limits on Chinese auto investment. The stock combines a low P/E, a dividend and active share buybacks. It is also associated with high debt and exposure to North American vehicle volumes and trade policy shifts. The implications of USMCA renewal, tariffs on Chinese imports and potential reshoring of production for Martinrea, and how these factors relate to the gap between its current pricing and the value of its North American footprint, are key questions for investors to consider.

Martinrea International’s low P/E, dividend and buybacks are only half the story. The real question is what the market might be missing in the 6 key rewards and 2 important warning signs as USMCA politics and Chinese auto flows evolve

Aptiv (APTV)

Overview: Aptiv develops the electronics, software and wiring that sit at the core of modern vehicles, from advanced safety systems and in car computing to the power and data networks that connect sensors, batteries and control units.

Operations: Aptiv generates US$9.0b from Electrical Distribution Systems, US$6.7b from Engineered Components Group, US$5.8b from Intelligent Systems and records an US$886m reduction in Eliminations and Other.

Market Cap: US$12.8b

Aptiv may appeal to investors who want exposure to the electronics and software that Chinese and North American automakers increasingly use in their vehicles, as trade tensions and USMCA rules push more content toward compliant suppliers. The company operates at the intersection of advanced safety, ADAS and high voltage wiring, while also building business in aerospace, defense and automation. Revenue is expected to contract, and profit margins recently fell to 1.8% after a US$1.1b one off loss. With a high P/E, debt that is not well covered by operating cash flow, and earnings forecasts that appear stronger than the top line, a key consideration is whether markets are correctly weighing Aptiv’s ADAS and edge AI opportunity against its trade, funding and profitability risks.

Aptiv sits at the convergence of ADAS, edge AI and auto electronics, yet its recent 1.8% margin and funding pressures suggest the real story lies in the tradeoffs detailed in the 3 key rewards and 3 important warning signs (1 is major!)

The three stocks covered here are just the starting point; the full North American Auto Parts and Supply Chain Stocks screener surfaced 11 more companies with equally compelling auto parts and supply chain narratives across North America. Use Simply Wall St to identify and analyze the specific catalysts, trade sensitivities and financial health filters that matter most so you can focus on the highest conviction plays in this theme.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.