What Is a Corrective Action Report?
A corrective action report (CAR) is a formal document used to record a nonconformance or quality issue, investigate its root cause, and track the actions taken to fix it and prevent it from happening again.
It's not a complaint form or a record of blame. A corrective action report is a problem-solving tool. It forces the people closest to the issue to slow down, investigate properly, and put a structured fix in place—rather than applying a quick patch that lets the same problem resurface later.
The term "CAR”, corrective action report, is sometimes used interchangeably with corrective action request, corrective action record, or 8D report. In supplier quality management, the document is often called a supplier corrective action report (SCAR), issued by a customer to a supplier when a supplied product or service fails to meet requirements.
Why Create a Corrective Action Report?
A corrective action report does more than close out a quality issue. Used consistently, it drives measurable improvement across operations.
Prevents problems from recurring - The biggest difference between a corrective action report and a basic incident log is root cause analysis . A CAR requires you to investigate why the issue happened, not just what happened. When root causes are identified and addressed, the same issue is far less likely to come back.
Creates an auditable quality record - ISO 9001:2015 clause 10.2 requires organizations to retain documented information as evidence of the nature of nonconformances, the actions taken, and the results of those actions. A completed corrective action report is that documentation.
Holds people accountable - A corrective action report names who is responsible for each action and when it needs to be completed. That visibility drives follow-through. When actions are tracked in a shared system, they don't get forgotten—and if they do, it's easy to see exactly where the gap is.
Supports supplier quality management - Supplier corrective action reports (SCARs) are one of the most practical tools in a supplier quality program. When a supplier delivers a nonconforming product or service, a SCAR puts the supplier on notice, requires a documented investigation and response, and creates a record that can be used to track supplier performance over time.
Reduces the cost of poor quality - Every nonconformance has a cost—rework, scrap, customer complaints, warranty claims, or lost contracts. A corrective action report that gets to the root cause and eliminates a recurring issue reduces that cost. The time invested in completing the report is almost always less than the cost of the problem repeating.
What to Include in a Corrective Action Report
A complete corrective action report covers the full lifecycle of the issue—from initial identification through to verified close-out. These are the sections every CAR should include.
Issue identification
Report number and date raised
Name and role of the person raising the report
Description of the nonconformance or issue
Where and when it was identified (process, location, or batch)
Immediate impact (product affected, quantity, customer impact)
Containment actions
Steps were taken immediately to contain the issue and prevent further impact
Products quarantined, processes stopped, or customers notified
Person responsible for containment and date completed
Root cause analysis
Method used ( 5 Whys , fishbone/Ishikawa diagram, fault tree analysis, or other)
Contributing factors identified
Confirmed root cause
Evidence supporting the root cause conclusion
Corrective actions
Description of each action required to address the root cause
Person responsible for each action
Target completion date
Status (open, in progress, or complete)
Verification of effectiveness
How the corrective action was verified
Evidence that the root cause has been eliminated
Date of verification and name of verifier
Confirmation that the issue has not recurred
Sign-off and close-out
Name and signature of the quality manager or authorized reviewer
Date of close-out
Reference to any related documents, audits, or NCRs
For supplier corrective action reports (SCARs)
Supplier name, contact, and location
Purchase order or delivery reference
Supplier's response and root cause explanation
Supplier's proposed corrective actions and timeline
Customer acceptance or rejection of the supplier's response
How to Write a Corrective Action Report
Writing a corrective action report isn't complicated, but it does require discipline. Here's how to work through it step by step.
Step 1: Describe the nonconformance clearly and factually
Start with what happened—not what you think caused it, not who you think is responsible, just a factual description of the issue. Include when and where it was identified, what process or product was involved, and what the immediate impact was. Be specific. "Defective welds on batch 2024-047, identified during final inspection on 3 April"is useful."Weld quality issues"is not.
Step 2: Take and document containment actions
Before investigating the root cause, contain the problem. Quarantine affected product, stop the process if needed, and notify any customers or downstream teams at risk. Document what you did, who did it, and when. Containment isn't the fix—it's the firebreak while you work on the actual fix.
Step 3: Investigate the root cause
This is the part most CARs get wrong. Root cause analysis requires you to ask why the nonconformance occurred, then keep asking why until you reach the underlying system or process failure—not just the immediate trigger. Common methods include the 5 Whys, fishbone (Ishikawa) diagrams, and fault tree analysis. The method matters less than the discipline: don't stop at the first "why." A corrective action that only addresses a symptom will fail.
Step 4: Define and assign corrective actions
For each root cause identified, define the specific action needed to eliminate it. Assign a named owner and a realistic due date. If multiple actions are required, prioritize them clearly. Avoid vague actions like "retrain staff" or "improve process"—these are outcomes, not actions. A good corrective action is specific, measurable, and verifiable.
Step 5: Verify effectiveness and close out
Once the corrective actions are complete, verify that they've actually worked. Check whether the nonconformance has recurred. Review relevant data, inspection records, or process outputs. If the fix is effective, document the verification evidence and close out the report with an authorized sign-off. If the fix hasn't worked, reopen the root cause investigation—don't just add more actions on top of a broken solution.
Step 6: Use the data to drive improvement
A closed corrective action report shouldn't just be filed away. Review CARs regularly in management meetings and quality reviews to identify patterns. Recurring issues in the same area or the same root cause appearing across multiple reports signal a systemic problem that needs to be addressed at the process or system level.
