PPAP, APQP and IATF 16949: what an auto parts supplier is actually asked for

1. 1PPAP is a core requirement of IATF 16949, and it runs one way: the OEM does not submit it, it requires it from its suppliers, through the standard and its own customer-specific requirements. The AIAG core tools (APQP, PPAP, FMEA, MSA, SPC) have to be built into the quality management system.
2. 2A Tier 1 supplier normally follows APQP, is audited and registered to IATF 16949, and answers directly for the OEM’s PPAP requirements and submission deadlines.
3. 3Tier 2 is increasingly required to flow PPAP obligations down to its own supplier base.
4. 4OEM-specific requirements sit on top of the standard. Ford’s “Specifics for PPAP” is published on iatfglobaloversight.org.

• The process has a name: RFQ and nomination. A detailed quote, feasibility, a timing plan and a risk assessment go to a sourcing board, which makes the award. Capacity and standing on the supplier panel matter.
• Our reading: there is no single decision-maker to persuade. There is a board that awards against a package. Marketing helps you get onto the panel and stay there. The award is won in the technical and commercial package.

• How long it takes to approve a new supplier: we looked for a typical timeline and found no source that states one. It depends on each OEM’s specific requirements, so we do not put a number of months on this page.
• In December 2025, Brazil’s parts makers association, Sindipeças, projected 2026 exports 6.1% below the US$8.4 billion it expected for 2025, after sales to the US fell 13% through November, a drop its economist attributed to the 2025 US tariffs. The tariffs in force have changed since; the current rates are on the dated trade page.

“IATF 16949 certified” in the footer, treated as a differentiator. It is the ticket in, and everyone on the panel holds it. What lowers risk for a Tier 1 is evidence that a Tier 2 can flow PPAP down to its own sub-suppliers, and that almost never appears in marketing material. Our reading, not a measured finding.

• Marketing operations

  A pipeline that follows each RFQ through nomination, so it is visible which programs you quote and which you win.

• Brand and content

  Process content (PPAP elements, APQP phases, flow-down) that a quality engineer would forward to a colleague.

• Digital presence

  Pages that are found by people working through PPAP and APQP, and that show you understand both.

• Strategy

  Positioning built on flow-down capability and panel standing rather than on the certificate everyone holds.

For Brazilian parts makers the US question is tariff exposure and panel access. The rates in force are on the dated trade page, not here, because they change faster than this page does.

1. Umbrex: Tier 1 and Tier 2 automotive suppliers industry primer
2. Net-Inspect: meeting IATF 16949 requirements
3. IATF Global Oversight: Ford Specifics for PPAP (January 2025)
4. Knauf Automotive: the role of OEMs and tier suppliers
5. AutoIndústria: Sindipeças projections for 2026

Research reviewed 25 September 2026. Figures marked as sourced come from the documents listed here; statements introduced as our reading are ours.