Winning the business is the easy half.
I have watched suppliers frame the nomination letter, then quietly lose the same part three years later without anybody ever running a tender against them. Nobody beat them. They just stopped being the obvious choice.
A programme award is not a contract you sit on for seven years. It is a seven year audition with a scorecard attached, reviewed every month, and the people doing the reviewing change jobs faster than the vehicle does.
I have sold powertrain and components into Scania, Volvo, MAN and Detroit Diesel. Getting nominated was never the difficult part. Holding the part while the customer squeezed the price, changed the design, moved the volume and watched every delivery, that was the difficult part.
Production approval is not the finish line, it is the starting gun. The first few months of real volume are worth more to your standing than the two years of development that got you there.
Everything before that happened in a controlled environment. Sample parts, agreed conditions, engineers who wanted you to succeed. Volume production is a different animal. The line runs faster than your trial, the operators are new, your own sub tier suppliers are ramping at the same time, and any weakness shows up in the first thousand parts rather than the first ten.
Get it wrong and you meet the containment machine. A defect reaching the assembly line puts you into controlled shipping, where you add a full redundant inspection on top of normal production and pay for it yourself. Escalate again and that inspection moves to a third party, outside your facility, still at your cost, until the customer is satisfied the problem is dead. Very few suppliers recover the programme margin after that, and the plant remembers.
Plan the ramp as a project in its own right and put your own people on site at the customer plant for the first builds. Presence during launch buys you years of goodwill. Absence during launch costs you the programme.
Every major vehicle builder runs a supplier rating. Quality in parts per million, delivery performance, warranty, responsiveness, and increasingly capacity and systems compliance. It is published to you monthly and it follows you across every plant and every division of that customer.
Most suppliers treat it as a report card. It is not. It is a gate.
Fall far enough down the rating and you are not losing an argument about quality. You are losing the right to quote.
Drop below the threshold and you go on new business hold. You keep shipping the parts you already have, you keep taking the cost reductions, and you are locked out of quoting anything new until you climb back. I have seen businesses lose the best part of two years of opportunity that way while the commercial team sat wondering why the enquiries had dried up. Nobody sends a letter. The buyer just stops calling.
Treat the rating as a live commercial asset. Somebody senior owns it, reviews it monthly against the customer's data rather than your own, and challenges every charge the week it appears rather than at year end when the evidence has gone cold.
Vehicles change constantly through life. Emissions rules move, a component gets substituted, a weight target shifts, a supply problem two tiers down forces a redesign. Each lands on you as a change request.
Suppliers get this wrong in both directions. Some absorb every change quietly to look easy to deal with, then wonder why the programme margin has evaporated by year four. Others fight every one and get labelled difficult, which is the worse outcome, because difficult suppliers get designed out of the next platform without ever being told why.
Price every change, every time, including the ones you fully intend to give away, so the customer can see the value of what they are being handed. Then be fast. Speed on a change is one of the few things a customer engineer genuinely remembers when the next nomination comes round, and engineers get consulted long before purchasing runs the numbers.
Volume never matches the forecast. It comes in under, which wrecks your amortisation, or it comes in over, which is the more dangerous one.
Nobody takes your word on capacity. They audit it. Demonstrated sustainable output at the bottleneck, minus everything already committed to other customers, measured against planning volume and peak volume. Your nameplate rate is irrelevant. What counts is what you have proved you can run, repeatedly, on the customer's operating pattern, with the sub tier capacity behind it verified as well.
If a programme takes off and you cannot follow it, the customer will bring in a second source to protect its line. That second source arrives as insurance and stays as a competitor, sitting inside your account with a live part number and a relationship. Have the capacity conversation early, as part of the programme, rather than defending it in the middle of a crisis.
Three or four years in, the vehicle gets a mid life update. Styling, software, a handful of component changes, usually on a tight budget. Most parts carry over untouched.
That is exactly why it matters. The facelift is the moment the customer looks across the whole bill of materials and works out which suppliers it wants on the next generation. Carry over is the cheapest decision available to them, so the incumbent starts ahead. You only lose that advantage by handing them a reason.
The same thing works in your favour from the outside. Being in the original design is the single biggest lever you have and it tilts the odds hard, but it has never been the only way in. Plenty of business changes hands years after start of production because the incumbent could not follow the volume, could not hold quality or simply made itself hard to deal with. If you are outside a programme you want, that is your opening, and it is patient work rather than a tender.
Hold the part by being the supplier they never have to think about. That is not a soft ambition. That is the entire commercial strategy.
If you cannot say where you sit on your biggest customer's rating this month, start there on Monday. If you want an outside read on a market before you commit real money to it, the Market Diagnostic gives you a straight go or no go in five working days for $197, or take twenty minutes and talk it through with me.
Ground Truth is a paid call that gives you an honest go or no-go on your market, direct with Scott. The $250 deposit is credited if you go ahead, and refunded if we are not the right fit.