Automakers are strengthening relationships with their suppliers as cost pressures mount across the industry, according to a new study reported by Automotive News.

That finding, on its face, reverses two decades of purchasing orthodoxy. Since the lean-procurement era took hold, OEM (original equipment manufacturer) purchasing departments have squeezed suppliers on price, ran short-cycle bidding and treated parts makers as interchangeable. The study signals the pendulum swinging back toward longer-term collaboration.

The trigger is cost. Raw materials, labor and tooling outlays have climbed steadily, and suppliers — especially smaller tier-two and tier-three firms (companies feeding parts to the direct tier-one suppliers) — have absorbed much of the hit. When those firms fail, programs stop. Automakers have learned that lesson the hard way through post-pandemic supply shocks, and the study suggests the lesson has stuck.

What does this change for purchasing departments?

In practice, stronger ties usually mean three things:

• Longer contract horizons, giving suppliers bankable volume to justify capacity investment
• Earlier supplier involvement in vehicle programs, before designs lock in cost
• More transparent cost breakdowns, replacing annual price-down demands with shared engineering savings

Those are the standard mechanics of collaborative purchasing, and the study indicates automakers are now leaning into them rather than paying lip service.

The shift matters most for small and mid-sized suppliers. Tier-two firms with thin margins are the first to exit when OEMs push price cuts too far. A collaborative posture from the top of the chain, if it's real, should slow that attrition.

Claim versus confirmation

One caveat applies. This is a study, not production data. Supplier-relations research historically relies on supplier surveys — perception, not audited contracts. Past iterations of similar work, including the long-running North American supplier-satisfaction rankings, have found a gap between what automakers say about partnership and what purchasing teams actually do at the negotiating table.

So treat the headline finding as directional. The verifiable test is whether contract terms change: longer program commitments, joint engineering budgets, payment-term relief. Those show up in supplier financials, not sentiment scores.

What to watch next

Watch whether the next round of OEM-supplier contract renewals reflects the shift — program lengths, engineering cost-sharing clauses, and how purchasing chiefs talk on earnings calls. If the study's finding holds, the first hard evidence will surface in tier-two supplier order books and capacity commitments within the coming model-year cycle.