What PPAP actually costs, and who pays for it
The quote goes out at $1.014 a piece and wins. Four months later somebody reads the purchase order properly and finds a PPAP Level 3 requirement with a submission date. Nobody costed it, the work is real, and it lands on the program before a single production piece ships.
PPAP cost is the most commonly missed line on an automotive quote, and it is missed because it is a quality requirement rather than a manufacturing one. Every figure below is illustrative and built on the spool valve this site prices throughout.
The 6 elements a Level 3 submission actually contains
PPAP is a package of evidence, and each element in it costs hours. A Level 3 submission is the common default and it wants dimensional results, gauges, capability studies, sample parts, documentation and a demonstrated rate.
Dimensional results come first. The spool valve carries 40 characteristics and a Level 3 typically wants 6 pieces measured against every one, which is 240 measurements. At an illustrative 4 minutes each that is 16 hours of inspection time.
Gauges and fixtures come second and they are capital rather than labour. A checking fixture, a bore gauge and the calibration to prove them is an illustrative $6,800 that exists whether the program runs 6 years or 6 months.
Capability studies are third. Designated characteristics need a run of pieces measured and analysed, and an illustrative 5 characteristics across 125 pieces is another 12 hours between the running and the statistics.
Sample parts, documentation and the rate demonstration
Sample parts are consumed and never sold. Thirty pieces off the real process at $1.014 is trivial on this part and is not trivial on a $180 housing, which is why this element scales with the part rather than with the program.
Documentation is the element people underestimate most. Process flow, PFMEA, control plan, measurement system analysis, material certifications and the warrant itself is an illustrative 34 hours of engineering and quality time.
The paperwork is the biggest line.
The run at rate closes it. Producing at quoted cycle and quality for a defined period, usually with the customer watching, is an illustrative 8 hours of production time plus the verification around it.
Add those 6 elements and the illustrative total is around $12,240. On this program that is one tenth of a cent a piece across the first year, and on a 1,200 piece a year program it would be $10 a piece, which is the whole point of costing it separately rather than assuming.
Whether PPAP belongs in the piece price or its own invoice
Both are legitimate and the choice changes who carries the risk. Rolled into the piece price, PPAP recovers gradually and only if the volume arrives. Invoiced separately, it is paid before production and the exposure disappears.
Customers usually prefer it in the piece price because it keeps their capital spend down and moves the risk to you. Suppliers usually prefer it invoiced, for exactly the same reason in reverse.
The practical middle is to invoice the capital, meaning gauges and fixtures, and amortise the labour. Gauges are a physical asset with an ownership question attached, and treating them the way tooling ownership gets treated is cleaner than burying them in a per piece figure.
Whichever you choose, put it on the quote as its own line with a number. A PPAP requirement absorbed silently into a piece price cannot be discussed, cannot be recovered if the program is cancelled, and cannot be repeated when a second part on the same program needs one.
An invisible line cannot be recovered.
Watch which level the customer actually asked for, because the levels differ by a lot. Level 1 is a warrant and an appearance report. Level 3 is the full package described here. Level 5 keeps everything at your site for review rather than submitting it, which changes the logistics and not much of the cost. Quoting Level 3 against a Level 1 requirement makes you expensive for no reason, and the reverse leaves a gap.
What a print change after submission costs
A revision after approval invalidates the parts of the submission it touches, and sometimes all of it. A dimension change on a characteristic you measured means new dimensional results. A change affecting a designated characteristic means the capability study runs again.
The severity depends on what moved. A note change with no dimensional effect is often a paperwork resubmission and a few hours. A tolerance change on a controlled feature can be most of the original cost again, including a gauge modification with its own lead time.
This is why the quote should name the revision it priced. Quoting PPAP against Rev C makes Rev D a commercial conversation, and without that sentence the default assumption is that you absorb it.
The same applies to process changes on your side. Moving the part to a different machine after approval is a change the customer has to be told about and may require a resubmission, which is a real constraint on your own scheduling that nobody thinks about at quote time.
Where the schedule risk sits
PPAP has a lead time and it runs backwards from start of production, not forwards from the award. Gauges take weeks to build. Capability studies need production-representative parts, which means tooling has to be finished. The run at rate needs a working process.
An illustrative sequence has gauge design and build at 8 weeks, first production-representative parts at week 10, capability and measurement at week 12, and submission at week 14. If production starts at week 16, the award needed to land 16 weeks earlier.
That is the number worth carrying into the quote as a stated lead time. A customer asking for parts in 10 weeks with a Level 3 requirement is asking for 2 things that do not fit together, and saying so at quote time is a service rather than an obstacle.
The failure mode is quoting the piece price against a schedule and the PPAP against nothing, then discovering in month 3 that the submission date is before the gauges exist.
It runs backwards from production.
There is a cash consequence as well. Everything in this list is spent before the first production invoice, so a program with a $12,240 submission and 90 day terms is asking you to fund it for most of a year. That is working capital rather than cost, and it belongs in the same conversation.
What to write on the quote
Name the submission level, the revision, what is included and what is not. Level 3 assumed, priced against Rev C, 6 pieces dimensional, 5 designated characteristics, gauges quoted separately at $6,800.
State the resubmission position explicitly. Changes to the print after approval are quoted separately, and a sentence to that effect costs nothing and prevents the most common dispute on this line.
Then track what it actually took, the same way quoted against actual tracks production operations. PPAP is quoted from memory on most floors, and memory drifts toward optimism on anything involving documentation.
Second and third parts on the same program are cheaper, because the process flow, the PFMEA structure and the measurement approach carry over. Quoting part 4 at the same figure as part 1 is leaving margin on the table, and knowing the real curve requires having measured the first 3.