How the score is calculated
- Quality: 100 points at or below the PPM target, falling on a log scale to 0 at ten times the target.
- Delivery: 100 at the on-time target, 0 at 80 %, minus 5 points per premium freight.
- Complaints: 100 minus 25 per complaint in the month.
- Responsiveness: minus 10 points per day the 8D response exceeds the target.
The weights default to 40 / 30 / 15 / 15 % and can be changed to match your supplier quality manual. Share the PDF with the supplier at the monthly or quarterly review.
Frequently asked questions
›Which KPIs belong in a supplier scorecard?
Most automotive scorecards use quality (PPM and number of complaints), delivery (on-time delivery, premium freight) and responsiveness (8D response and closure time). Some add cost, certification status and audit results.
›How is PPM calculated?
PPM = rejected parts / received parts × 1,000,000. Count the parts rejected because of the supplier, whether found at incoming inspection, in production or at your customer.
›What does class A, B and C mean?
A (≥ 85): preferred supplier, reduced inspection possible. B (70–84): approved with an improvement plan. C (< 70): escalation, for example controlled shipping, new business hold or an on-site audit.