Automotive components must meet tight dimensional tolerances and safety requirements. A defective seal, incorrect label, or substandard packaging material can lead to assembly line stoppages, warranty claims, or safety recalls costing millions.
The automotive industry typically uses AQL 0.15 for safety-critical parts and 1.0 for general components. IATF 16949 and PPAP requirements make statistical sampling a contractual obligation for Tier 1 and Tier 2 suppliers.
| Defect Type | AQL | Inspection Level | Notes |
|---|---|---|---|
| Critical (safety, structural) | 0.15 | General II | PPAP required |
| Major (dimensional, functional) | 0.65 | General II | Cp/Cpk process data needed |
| Minor (cosmetic, labelling) | 1.0 | General I | OEM-specific tolerances |
Corrugated packaging for brake components failed moisture resistance tests. AQL 0.15 inspection caught degraded flute strength before shipment, preventing corrosion damage to 30,000 parts.
Pre-shipment AQL 0.65 check found barcode mismatches on 1.5% of cartons. Corrective action prevented assembly line scanning errors at the OEM plant.
A supplier shipped packaging without dimensional checks. Oversized cartons jammed the automated depalletiser, causing a 4-hour line stoppage costing the OEM over $500,000.
