Guide: IATF 16949
IATF 16949: the maintenance evidence auditors ask to see
IATF 16949 asks automotive plants to keep a documented maintenance system for the equipment that makes conforming product, and to show that the system is actually running. This page lists the kinds of evidence a maintenance team is typically asked for. It is not the standard, and MaintenanceIQ does not certify your site. For the wider map, see traceability requirements by standard.
Key takeaways
- Auditors follow the equipment that affects product, not every asset in the plant.
- They expect a documented system: which machines, which spares, which objectives, and what you did when an objective was missed.
- Objectives people actually track include OEE, MTBF, MTTR and PM compliance. The number matters less than the review and the action.
- Preventive maintenance has to be happening. Predictive methods are expected where they apply, not as a slogan.
- A certificate comes from your certification body. Software can only keep the records.
What the maintenance clause is really testing
IATF 16949 builds on ISO 9001 for automotive production. The maintenance expectation sits in the total productive maintenance requirements (often discussed against clause 8.5.1.5 of IATF 16949:2016). This page paraphrases the kind of evidence those requirements produce. Read the licensed standard for the clause text. Do not treat this list as a substitute.
The test is practical. Can you show the machines that must run to make good parts, a plan to keep them running, the spares that plan depends on, the objectives you set, and the action you took when you missed them?
Evidence to have ready
Walk this list with your quality head before the audit, on the machines that actually make the product the customer cares about.
| What they are looking for | A record that answers it |
|---|---|
| Equipment needed to make conforming product | An asset list marked by criticality, tied to the process, not a dump of every drill in the crib |
| Replacement parts available for that equipment | Critical spares identified, with a stock you can show and a link to the machine |
| Resources for maintenance | People, time and a schedule that is not only a wish. PM compliance shows whether the time was real |
| Equipment, tooling and gauging preserved | Storage, calibration status and a history, so a gauge used yesterday is still in date |
| Maintenance objectives | A small set you review: for example OEE, MTBF, MTTR, or the share of PMs done on time |
| Review when objectives are missed | Minutes or a record of the review, and an action with an owner, not a slide that was never opened again |
| Preventive maintenance in use | Schedules by calendar or usage, closed jobs with the checklist, not a blank annual plan |
| Predictive methods where they fit | Condition readings with limits on the assets where a failure gives you a warning, and proof you acted on one |
Customer-specific requirements sit on top of this. If a customer asks for a particular metric or a particular spare, that request is part of the evidence too.
Objectives that hold up
A plant that quotes "85% OEE" with no downtime codes will lose the conversation. Pick objectives you already measure from real jobs. MTBF and MTTR from logged breakdowns, PM compliance from scheduled work, and availability from those same breakdowns are defensible because you can open the job behind the number.
Review them on a rhythm you can keep, monthly is common, and write down the action when one is missed. The action is the point. An objective with no follow-up is a poster.
The formula pages, if you need them in the room, are the OEE calculator and the MTBF and MTTR calculator. This page is about the evidence, not the arithmetic.
What software can and cannot do
MaintenanceIQ can hold the asset, the criticality, the PM schedule, the closed checklist, the spare, the breakdown, and the calibration certificate on one record, and it can build an evidence pack mapped to IATF 16949. The pack is a frozen PDF. It is not a certificate.
Certification is a decision by your certification body, based on your system. If a clause is not met on the floor, a tidy export will not hide it. The VDA 6.3 checklist is the sister page for process audits, which many automotive plants face as well.
How to use this before an audit
Sit with quality and pick the machines that make the parts on the customer's scope. For each one, try to open the asset, the PM schedule, the last three closed jobs, the critical spare, and the objective you claim to manage. Time it. If it takes more than a few minutes, that is the gap, and it is a records gap even when the work was done.
Write the missed-objective action in the same place as the objective. An auditor who finds a target and no action will spend the rest of the visit looking for other targets with no action. The compliance evidence page describes how a pack is frozen. Freezing a pack does not create records you never captured. If you claim predictive maintenance, be ready to show one reading that crossed a limit and the job that followed. A slide that says you do predictive maintenance is not evidence.
Sources
- IATF global oversight (opens in a new tab), International Automotive Task Force
- About IATF (opens in a new tab), International Automotive Task Force
Frequently asked questions
Does IATF 16949 require a CMMS?
No. It requires a documented maintenance system and evidence that it runs. A CMMS is one way to keep that evidence connected. Spreadsheets can work until they cannot be traced to the machine.
Which maintenance metrics does IATF expect?
The standard points to documented objectives and gives examples such as OEE, MTBF, MTTR and preventive maintenance compliance. You choose objectives that fit your process, review them, and act when you miss them.
Is predictive maintenance mandatory?
Predictive methods are expected where they are applicable, not on every asset. A critical machine with a readable condition and a costly failure is where an auditor will look for a limit and a reaction.
Does MaintenanceIQ certify us to IATF 16949?
No. It can produce an evidence pack mapped to IATF 16949. Certification comes from your certification body.