I will be straight about my seat: I have never run a dealer group's budget. What I have done for twenty years is buy and audit the machinery automotive marketing is assembled from, national CTV and video, co-op structures, local search and social, attribution systems that claim more than they know, and automotive is the category where every pathology of that machinery shows up simultaneously. It is the most instructive mess in advertising, which is why it belongs on this blog.
The structure is the story. Tier one is the manufacturer buying national brand media. Tier two is the regional dealer association buying the metro. Tier three is the individual dealer buying search terms and social inventory against this month's floor plan. Three budgets, three agencies, three measurement systems, one buyer, and the buyer does not know the tiers exist. She spends weeks researching online, watches CTV where tier one lives, gets retargeted by the region, and finally searches the nameplate plus her town, where the dealer, and frequently a competing dealer, and frequently the manufacturer, are all bidding against each other for a click one of them already earned. The category pays three times for one intent and then argues about whose dashboard gets the credit.
The reason nobody fixes it is that the structure is legally and commercially load-bearing. Franchise laws, dealer independence, and decades of manufacturer-dealer distrust mean the three tiers cannot simply merge their budgets; each tier's agency is paid to advocate for its tier, and each tier's dashboard is built to claim the shared sale. Understand that and you stop expecting a reorganization and start looking for treaties, which is where a media buyer's fixes actually live.
What a media buyer would fix first
Deconflict the search auction before touching anything else. When tier one, tier two, and tier three bid the same high-intent terms in the same geography, the only guaranteed winner is the platform, since internal competition is pure price inflation; every increment one tier bids against another is money delivered directly to Google for the privilege of competing with yourself. A brand-negotiated keyword architecture, who owns nameplate terms, who owns nameplate-plus-geo, who owns inventory and price terms, is unglamorous governance work of the kind I would put before any media plan, and in this category it is worth actual points of budget. The pilot is cheap: pick one metro, write the treaty, run it for a quarter against a comparable untreatied metro, and let the CPC difference make the argument to the rest of the network.
Second, treat co-op dollars as media instead of paperwork. Co-op funding tells dealers what the manufacturer will reimburse, and reimbursement rules quietly become the media plan: if compliant search and pre-approved templates are what gets funded, that is what runs, whether or not it is what the market needs. The result is tier three money defaulting to the bottom of a funnel that tier one already filled, while nobody funds the middle, the comparison and consideration layer where the actual brand switching happens; the buyer deciding between your nameplate and the rival's spends weeks in review content, comparison queries, and owner forums that no tier's rules reimburse. That gap is visible in every automotive plan I have ever been asked to look at, and it is the last-campaign-standing problem wearing a co-op badge: what survives budget season is what is easy to fund, not what wins the quarter after next. A manufacturer that rewrote its co-op rules to reimburse consideration-layer work would move dealer money into the funnel's empty middle without spending a new dollar of its own.
Third, be adult about attribution. A car purchase has months of digital research and one offline transaction, which makes it a category where last-touch reporting flatters the last touch, and the last touch is almost always branded search or a listing platform. Sales-match studies, geo experiments between comparable metros, and honest incrementality reads on the marketplaces are what tell you whether the tier three spend sold cars or intercepted them. The listing platforms themselves deserve the same toll-booth scrutiny as commerce media: indispensable, self-graded, and priced accordingly, and a dealer group that has never run an incrementality read on its marketplace spend is renewing a contract on the vendor's own testimony.
Automotive marketers do not need another channel. They need a treaty. The category's alpha is organizational, and the first manufacturer-to-dealer structure that plans the three tiers as one funnel will look like a media genius without buying a single new impression. Everyone else will keep paying three times for the same customer and calling the third payment a conquest.