A dealer group’s marketing splits into two halves. One half is governed by the manufacturer: co-op dollars, certified vendors, pre-approval, proof of performance. The other half — used inventory, fixed ops, the BDC, measurement — has no OEM rules at all, because there’s no OEM money in it.
The problem is that principals treat the whole thing as one half. The co-op program feels like the marketing department, so the group stops deciding. Vendors get hired because they’re on a list. Budgets get split the way the portal suggests. And the un-governed half, where most of the gross actually lives, runs on autopilot.
The useful question is where the manufacturer’s authority actually ends, because that line is where the group’s own decisions begin. Let’s draw it.
What does co-op actually pay for?
Co-op is manufacturer money that reimburses approved dealer advertising — when the rules are followed. It typically covers somewhere between 30% and 100% of eligible spend, accrues based on new-unit sales and sometimes certified pre-owned (CPO) sales, and pays out only when the dealer follows the manufacturer’s guidelines (9 Clouds).
Automotive advertising is usually described in three tiers (Demand Local):
- Tier 1 — national advertising the OEM (Original Equipment Manufacturer) runs itself. The brand campaigns, the Super Bowl spots. Not your money, not your decision.
- Tier 2 — regional dealer association advertising, funded collectively.
- Tier 3 — the dealer’s own local advertising, which is where co-op subsidies apply.
Each OEM writes its own rulebook: how dollars accrue, which media are eligible, what proof of performance looks like, and whether pre-approval is required before you spend (CoopConnect). A Ford store and a Stellantis store across the street from each other operate under different accrual math, different eligible channels, different claim processes.
Here’s the first thing worth saying plainly: co-op is a reimbursement program for a defined slice of advertising. It is not a marketing strategy, and it was never designed to be one. The OEM subsidizes the ads that sell its new units. Everything else in your business is outside the frame.
What does the certified-vendor program control?
The certified vendor program is the second layer of OEM governance, and it reaches further than most principals realize — into your website platform, your digital advertising, your creative look and wording, and how pricing displays.
But the mechanism matters. Joining a certified program is the price of co-op money, not a legal ban on hiring anyone else. GM dealers can use outside vendors; those vendors simply aren’t co-op eligible (9 Clouds). You’re trading flexibility for reimbursement, and that’s a trade you can evaluate line by line, vendor by vendor. It is not a blanket surrender.
The programs vary widely in how tight they grip. Ford’s certified website program is a closed list of four providers (FordDirect). The strictest regime right now is Stellantis’s Marketing Covenant, in force since October 1, 2026 — it caps advertised-pricing formulas, bans bidding on competitor dealer names, and repeat strikes can cost a dealer co-op funds, delivery allowance, and Tier 1 leads (Dealership Guy News).
Two cautions. First, the details differ by brand, and programs change — check your own OEM’s current terms rather than assuming what applied last year still applies. Second, advertised-pricing rules sit at the intersection of OEM policy and advertising law, and neither is settled ground. Have counsel review your pricing claims. Nothing here is legal advice.
What does the OEM never touch?
This is the half of the business that runs un-governed, and it’s larger than most principals account for:
- Used and non-CPO pre-owned marketing. No co-op money, so no co-op rules. How you merchandise, price, and advertise used inventory is entirely the group’s call.
- Service and parts retention. Fixed ops absorbs no OEM advertising governance. The customers in your service lane are yours to market to.
- The BDC (Business Development Center) and lead handling. The OEM may send you leads; how your people work them is your process, your training, your accountability.
- Budget allocation across stores. No manufacturer tells a group how to split spend between its strong stores and its weak ones — that is a channel-and-store decision the group has to make for itself.
- Vendors hired outside the co-op program. Not eligible for reimbursement, but fully yours to hire, measure, and fire.
- Google Business Profile and reviews. Local search presence belongs to the store.
- AI search. Buyers are starting to ask AI assistants where to shop. This channel is emerging and nobody can guarantee a mention anywhere, but no OEM program governs how your group shows up in it. It’s open ground.
Measurement deserves its own line. Dealer Inspire runs its own GA4 property for the sites it hosts, but states that dealers may keep their own separate property (Cars Commerce help documentation). Read that carefully: your analytics can live in a property the group owns, independent of any vendor. A group that doesn’t own its own GA4 property has outsourced the scoreboard to a vendor it’s supposed to be evaluating. That’s a structural conflict, and it’s fixable in an afternoon. (It is also the first step toward making GA4, the CRM, and the vendor reports agree enough to trust.)
So what’s actually my decision to make?
Run the marketing operation as two distinct systems.
Inside the program: run new-car co-op work by the OEM’s rules and claim every dollar. Co-op money left unclaimed is margin handed back to the manufacturer for no reason. Someone in the group should own the claims process the way the controller owns the floorplan audit — pre-approvals filed, proof of performance documented, accruals reconciled.
Outside the program: run everything else as a business the group actually owns. Used-vehicle marketing, fixed ops retention, the BDC, vendor selection beyond the certified list, measurement, budget allocation across rooftops. One person accountable for the whole chain from ad budget to sold VIN (Vehicle Identification Number).
That last part is the architecture most groups are missing. The un-governed half is where sold-unit attribution lives, where budget allocation across stores lives, where vendor accountability lives. The OEM will never build those feedback loops for you, because they sit outside its interest. This is where the money is left on the table — not in a missed co-op claim, but in a used-car budget nobody attributes to sold units and a vendor stack nobody has audited since it was assembled.
My own proof point is from an adjacent industry, and I’ll argue the transfer openly. I spent three and a half years running marketing for La Mesa RV, an 11-store RV dealer group, moving $500,000 a month from unmeasurable broadcast into measurable digital. RV retail has no co-op apparatus telling you what to do, so every dollar had to justify itself against sold units. That’s precisely the discipline the un-governed half of an auto group needs. The underlying problem is identical — multi-rooftop budget allocation, vendor accountability, attribution to the sold unit — and the discipline doesn’t change with the unit. The franchise layer changes which half of your marketing is governed. It doesn’t change how you should run the half that isn’t.
Where do I start?
A short diagnostic, answerable in a week:
- Which spend is co-op-governed and which isn’t? Split the entire marketing budget into two columns. Most groups have never drawn this line on paper.
- Who files the claims? Name the person. If the answer is “the agency handles it,” find out what percentage of accrued co-op actually got claimed last year.
- Does the group own its own GA4 property? Not the vendor’s property with your login — a property the group controls and keeps if the vendor changes.
- Do used and fixed ops have their own plan and their own owner? A named person, a budget, and a number they answer for. If the answer is no, you’ve found the un-governed half running on autopilot. (How to size that budget from unit goals is its own article.)
Who runs the half the OEM doesn’t?
Drawing the line between governed and un-governed spend is diagnostic work, and it’s exactly what a fractional CMO should own: auditing the full budget against the co-op rulebook, consolidating the vendor stack, building the group’s own measurement property, and putting one accountable owner on the chain from ad dollar to sold VIN. The OEM runs its half well. The question is who runs yours — and whether that person has the authority to decide, or whether the seat is still empty.