Process Audit

VDA 6.3 is the German automotive industry's standard method for the process audit. Published by the VDA (Verband der Automobilindustrie), it is a structured way to examine how well a manufacturing or development process is controlled — and how likely it is to consistently deliver a conforming product.

It is important to be clear about what VDA 6.3 is and is not. It is an audit methodology and assessment tool, not a certifiable management system in the way ISO 9001 or IATF 16949 are. You do not hold a VDA 6.3 certificate for your company in the same sense; instead, organizations use the method to audit their own processes and their suppliers' processes, and individuals become qualified VDA 6.3 auditors through recognized training and examination.

The method walks the process from project potential through to customer service, using a defined question catalogue, the turtle model to examine each process step, and a scoring scheme that produces a percentage result and an overall rating (commonly shown as green, yellow or red) with strict downgrade rules for serious risks. In the automotive supply chain, it is largely customer- and OEM-driven: your customers ask for it because it tells them how much they can rely on your process.

VDA 6.3 is relevant to any organization that develops or supplies parts into the automotive chain — particularly where German OEMs and their tiers are involved. It matters most for:

• Automotive suppliers (Tier 1, Tier 2 and below) whose customers request process audits before and during a program.
• Companies bidding for new automotive business, where a potential analysis of your process capability can decide whether you win the work.
• Organizations managing their own supply base who need a rigorous, consistent way to assess and develop suppliers.
• Quality, manufacturing and supplier-development professionals who need to become qualified VDA 6.3 auditors to perform or accompany these audits.
• Suppliers with launch, escalation or performance concerns, where a structured process audit pinpoints exactly where control is breaking down.

A simple rule of thumb: if your automotive customers audit your processes — or expect you to audit theirs — VDA 6.3 is the common language they will use, and being fluent in it protects your business.

VDA 6.3 structures the audit around a set of process elements that follow a product from concept to service. In practical terms, an audit examines:

• P1 — Potential analysis: an assessment of a supplier's capability, typically before awarding new business.
• P2 — Project management: how the project is planned, resourced and controlled.
• P3 — Planning of product and process development.
• P4 — Realization of product and process development.
• P5 — Supplier management: how your own suppliers are selected, developed and controlled.
• P6 — Production process analysis: the core of most audits, examining the series production process itself, step by step.
• P7 — Customer care, customer satisfaction and service.

For each area the auditor uses the turtle model to look at inputs, outputs, resources, methods and people, then scores the answers against defined criteria. The scores roll up into a percentage result and an overall classification, but the method also applies downgrade rules so that a single serious risk — for example around safety or a special characteristic — cannot be hidden by an otherwise good average. Because results depend heavily on judgement, the standard places real weight on the competence and qualification of the auditor.

The most immediate reason is business. In the automotive world, process audits are a routine part of winning and keeping work. A strong potential analysis can be the difference between being awarded a program or not, and solid ongoing process-audit results keep you off customer escalation lists. Being genuinely capable in VDA 6.3 — both in passing audits and in running them — directly protects revenue.

It also makes you better, not just compliant. Because the method drills into the real production process and applies downgrade rules for serious risks, it surfaces the weak points that lead to escapes, launch problems and warranty cost. Fixing what a VDA 6.3 audit reveals tends to improve delivery and quality performance across the board, which is exactly what your customers are watching.

Finally, having qualified auditors in-house changes how you manage your own supply base. Instead of relying on gut feel or inconsistent checklists, your team can assess and develop suppliers with the same rigorous, common method your customers use on you — turning a customer requirement into a genuine competitive strength.

With more than 30 years of experience, 900+ clients supported and a 100% first-time pass rate on the certifications we lead, we help you become genuinely strong in VDA 6.3 — whether you need to pass customer process audits, run them on your suppliers, or both. Our 10-Step Approach keeps the work focused on real process control rather than paperwork.

Because VDA 6.3 is an audit method rather than a certifiable system, we tailor the engagement to your goal. We prepare your teams and processes for customer and potential-analysis audits, walking your production process with the turtle model and the question catalogue exactly as an assessor would, so nothing surprises you on the day. We help you build the process controls and evidence the method looks for, and we support your people in becoming qualified VDA 6.3 auditors so the capability stays in-house.

Where VDA 6.3 sits alongside your IATF 16949 quality system, we integrate the two so you are running one coherent approach — and we keep any supporting documentation lean, in the single-level, under-200-page style we use across our projects. A typical engagement runs 4–10 months depending on scope, the number of sites and your starting maturity. You finish audit-ready, with the process discipline to back it up.

• Treating VDA 6.3 like a certificate to hang on the wall. It is an audit method. We focus on genuine process control and audit readiness, which is what customers actually score.
• Underestimating the downgrade rules. One serious risk can sink an otherwise good result. We help you find and close those risks before an assessor does.
• Weak potential analysis. A poor P1 can cost you the business before the program even starts. We prepare you to show real capability.
• Focusing only on production. The method spans project management, development, supplier management and customer service — not just the line. We prepare the whole chain.
• Unqualified or inconsistent internal auditors. Results depend on auditor competence. We help your people get properly qualified so your own audits carry weight.
• Running it parallel to IATF 16949. Two disconnected systems waste effort. We integrate VDA 6.3 with your existing quality management.
• Preparing only for the audit day. Process control has to be real and sustained. We build discipline that holds up between audits, not just during them.