Manufacturing guide
A supplier scorecard is how a customer grades a plant on delivery, quality, responsiveness and cost, refreshed monthly or faster in automotive. When the score slips, or a new customer program brings a new scorecard, the plant buys to get back to green.
Book a demoLast updated September 27, 2026
The short answer
A supplier scorecard is a customer's running grade of a plant on on-time delivery, quality, corrective action speed and cost, usually refreshed monthly or faster in automotive. A red score can bring controlled shipping or block new business, so plants buy fast to fix it. Clean treats a new customer program as a dated buying moment and points sellers to plants showing the signs.
A supplier scorecard is the report card a customer keeps on each supplier site. For a plant, that customer is an automaker or tier one, an aerospace or defense prime, a medical device company, a machine builder or a retailer. The customer picks the metrics, the formula and the pass mark, and writes the rules into its supplier quality manual. The plant doesn't get a vote.
The score sits in the customer's supplier system, behind a login. Inside the plant, the quality manager watches it closest, because the corrective actions after a bad month land on that desk. Outside the plant and its customer, almost nobody sees it, which shapes how a seller can find plants under scorecard pressure.
The grading also runs downhill. ISO 9001 requires a certified company to evaluate and monitor the performance of its own outside suppliers, so many certified plants keep a supplier performance scorecard on their own vendors too, often in a spreadsheet.
The labels change from customer to customer. The core set barely does. Here is what a typical manufacturing supplier scorecard measures and where plants get caught.
There is no standard weighting. Two published examples show the range. A 1996 article in ASQ's Quality Progress described an electronics maker's 100-point scorecard: quality 30 points, on-time delivery 20, order-to-delivery time 15, and the other 35 split across technology and support, with a price multiplier between 0.5 and 1.0 applied to the total. A 1995 ASQ conference paper from a Michigan manufacturer weighted quality and delivery at 35% each, price at 20% and supplier support at 10%. Both are old, single-company examples. In both, quality and delivery carry most of the points.
The pass mark is what surprises people. APQC's cross-industry benchmark, built from 4,648 organizations, puts the median at 90% of supplier orders arriving on time. Aerospace customers often target 100%, and some take points off for every percentage point below it. A supplier at the cross-industry median would lose delivery points every month.
Common supplier scorecard metrics and what they measure (weights vary by customer)
| Metric | What it measures | Where plants get caught |
|---|---|---|
| On-time delivery (OTD) | Share of lots or lines arriving inside the customer's delivery window | Often graded against the customer's PO date, not the plant's promise date. Early can miss the window too. |
| Quality (PPM) | Defective parts per million the customer receives | Often a rolling window, so one bad lot stays on the card long after the fix. |
| Disruptions | Stop ships, line stoppages, yard holds and field actions at the customer | Commonly a deduction per event, so one bad week can turn a month red. |
| Warranty | Field failures and warranty cost traced back to the plant's parts | Lags the shipment by months, so an old problem can land on a new card. |
| Corrective action response | How fast corrective action requests and 8Ds get answered and closed | Some scorecards keep deducting while a corrective action stays open. |
| Cost | Price against target and annual price reduction commitments | Some customers score progress on the yearly price reduction. |
| Responsiveness | Speed on quotes, engineering changes and document requests | Some customers add a subjective rating from their buyers or supplier quality engineers. |
| Compliance | Current certificates, required declarations, ASN and label accuracy | An expired certificate can cost points on its own. |
The metrics overlap, but each industry leans on different things, and every customer sends its own OEM supplier requirements with the first purchase order. These are common patterns by customer type, not any one company's manual.
What different customers grade plants on
| Customer type | What the scorecard leans on | What arrives with the first PO |
|---|---|---|
| Automotive OEMs and tier ones | PPM, delivery, disruptions, warranty; refreshed monthly or faster | IATF 16949, customer-specific requirements, PPAP before the first shipment, annual price reductions |
| Aerospace and defense primes | On-time delivery against the PO date, quality escapes, open corrective actions | AS9100, first article inspection, and for defense, cybersecurity terms such as CMMC |
| Medical device companies | Quality agreement compliance, change control, audit results | ISO 13485, change approval before implementation, long document retention |
| Machinery and equipment OEMs | Quality, delivery, cost and support | PPAP or first article, capability studies, electronic ordering |
| Retail and distribution | On time and in full, ASN and label accuracy | Chargebacks for late or wrong ASNs and labels |
Automotive scorecards typically refresh monthly or faster, and some update weekly. That is twelve or more chances a year to turn red. Some aerospace customers score quarterly over a rolling window, some customers add an annual supplier rating on top, and the 1996 electronics example above held quarterly and annual reviews.
Most scorecards roll the metrics into a color. Green means the customer leaves the plant alone. Yellow is a warning. Red means escalation. Some customers use tiers instead of colors: the 1995 conference paper above rated suppliers approved, preferred or certified by score.
Rolling windows are the quiet problem. On the six-month windows some customers use, a bad spring can keep a plant red into the fall, long after the fix. In our view, that stretch, while the plant still pays for the old number, is a good time to call.
A red score costs money nobody budgeted: sorting labor, outside inspectors, premium freight, chargebacks. The new business hold hurts most at a growing plant, because it freezes the next program before it starts. So plants fix red scores by buying software, equipment, people and outside help, on the customer's clock rather than the budget calendar.
The rungs and their names vary by customer. A typical ladder, from first warning to last:
Each failing metric points at a different purchase. The 8D format puts containment first (sorting, extra inspection, weekend shifts) and the permanent fix later. The software conversation usually opens at the permanent fix, when the corrective action has to prove the problem won't come back.
Quality and QMS sellers live on PPM and corrective actions. MES sellers and scheduling tools own the delivery column. Machine monitoring sellers and CMMS sellers sit behind the downtime that causes missed ships. ERP sellers catch label and ASN errors, and CMMC compliance providers get the call when a defense customer adds cybersecurity terms.
Scorecard problem, what the plant buys, and who it opens a door for
| Scorecard problem | What the plant usually buys | Sellers it opens a door for |
|---|---|---|
| On-time delivery below threshold | Scheduling software, capacity planning, shop floor visibility | MES, scheduling, ERP |
| PPM or escapes rising | Inspection equipment, SPC, gauging, a QMS, a quality hire | QMS, inspection, vision AI |
| Corrective actions aging | Corrective action software, document control | QMS |
| Missed ships from downtime | Maintenance software, machine monitoring | CMMS, machine monitoring |
| Label or ASN errors | Electronic ordering, barcode labeling, ERP shipping modules | ERP, EDI |
| Traceability gaps after an escape | Lot and serial traceability on the floor | MES, traceability |
| Defense customer adds cyber terms | Readiness help, an assessment, managed IT | CMMC providers |
| Price reduction target missed | Job costing, quoting software, automation | ERP, quoting, robotics |
A slipping scorecard is one buying moment. Winning a new customer is a bigger one, because the plant takes on a whole new rulebook before it ships a production part.
Onboarding typically runs through a supplier survey, a quality system assessment, a capability audit, and first article or PPAP approval before the first shipment. An AIAG guide to supplier quality assessments lists the supplier's on-time delivery percentage for the past two years among the questions asked. The old scorecard follows the plant into the new program.
Spending often starts before the first invoice: inspection equipment, first-article and part-approval systems, electronic ordering and labeling, delivery tracking, and often a cybersecurity assessment. Nobody waits for next year's budget, because the customer set the date. For who signs those purchases, see how manufacturing plants buy.
For teams that sell into plants, Clean's job is to say which accounts have a real reason to buy and why. It splits a plant's life into 14 buying moments, and a new customer program is one of them. Out of the 4,000-plus early signs Clean's research has catalogued across all 14, more than 350 belong to this moment. In the full catalogue, roughly 7 in 10 signs get down to the actual machine, program or deadline involved, by Clean's own scoring.
Clean doesn't see scorecards. Nobody outside the plant and its customer does. Clean looks for the moves a plant makes around a new program, at the specific site where the work happens: a certification pursuit in a new industry, a first hire in a new function like a dedicated quality manager, new equipment investment in inspection, a capacity expansion. When two or more of those land at the same plant within a short span, the plant may be running a project rather than making a one-off purchase. Seeing that early is the point: you can reach the plant while its buying decisions for the new program are still open, often before the company has said anything in public.
Clean records each plant as a string of dated events, which a temporal graph network reads end to end, because the order of a plant's moves around a new program, and the gaps between them, say more than any single move. Each reason to reach out arrives with a date and its evidence, the other explanations that could fit (a certification renewal, not a new one; a replacement hire, not a new role) and what would knock it down. If Clean can't confirm something, it stays labeled unknown, and look-alikes (repair and service shops, contractors, one-person operations) are filtered out before a seller sees them. See how Clean works and all manufacturing buying signals. Or book a demo: Clean will line up a live list of plants for what you sell before the call is over.
In our view, plants under scorecard pressure are some of the most willing buyers and the quickest to delete a lazy pitch. For the people and the timing, see what a plant manager does, cold email to plant managers and the manufacturing buying calendar.
A supplier scorecard is a customer's running grade of a supplier site, usually covering on-time delivery, quality in defective parts per million, disruptions, corrective action speed, cost and responsiveness. The customer sets the metrics, formula and pass mark in its supplier manual. Automotive scorecards typically refresh monthly or faster. For plants, the score often decides whether they can win new work, so quality managers watch it closely.
Most manufacturing scorecards measure on-time delivery against the customer's date, quality as defective parts per million, disruptions such as stop ships or line stoppages, warranty, corrective action response time, cost against target and general responsiveness. Many also check paperwork, like current certificates and accurate ASNs. Weights vary by customer, and in published examples quality and delivery carry the most points.
A red score usually starts an escalation: a corrective action request with a due date, then possibly controlled shipping, where the plant inspects every part and may pay an outside firm to do it. Further steps can include source inspection, a new business hold that blocks new work from that customer, risk to the plant's quality certification, and in the worst case removal from the approved supplier list.
OEM supplier requirements are the rules a customer attaches to its purchase orders, usually in a supplier quality manual. They typically cover the required quality certification, first article or PPAP approval before the first shipment, capability studies on key characteristics, change approval, document retention, delivery windows, electronic ordering and labels, and for defense work, cybersecurity terms such as CMMC. They also define the scorecard the plant will be graded on.
No. Scorecards sit in the customer's supplier system behind a login, so outside the plant and its customer, almost nobody sees them. Sellers can see the moves a plant makes around its scorecard and its customers, such as a certification push, a first dedicated quality hire, new inspection equipment or a capacity expansion. Clean looks for those moves at the plant level and dates each one.
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