01 — THREE FINDINGS, EACH WITH ITS RECEIPT
Sixty-two percent of audited spend produced no defensible link to profit. Over the quarter 62 tracked vehicles sold; of 646 verified leads, 19 sales were defensibly attributable, returning $10,507. Under the most conservative statistical reading, the range is 45–62%.
Forty-one percent of platform-reported leads could not be confirmed against the dealership’s own air-gapped records. Asked how its figure was derived, the media partner cited a "proprietary" algorithm. The paper names no platform: the critique targets the systemically wasteful ad spend, not a vendor.
Premium, boosted placement consumed 69% of audited spend and quadrupled leads. The reported engagement lift was true. It was also not worth it. The dealership cut most boosted listings immediately — the audit paying for itself in a single budget decision.
“Retail advertising in a category as complex as automotive isn't unmeasurable so much as under-measured in connection to the bottom line.”
Business student at Harvard; over three years producing national retail advertising as Art Director for Volvo and General Motors — thousands of the very banners this paper audits — before resigning in August 2024. Learn More ↗
TEST YOUR OWN DIGITAL AD SPEND
What the audit’s range would mean for your quarter.
The study found between 45 and 62 percent of one dealership’s audited quarterly digital ad spend carried no defensible link to profit. Enter your own quarterly figure to project that range in dollars.
02 — BANNER-VIN-PROFIT METHOD
No new software.
No vendor’s permission.
A dedicated phone extension, a dedicated inbox, a link tag, and a spreadsheet. Every lead was air-gapped before the campaign ran, traced from online interaction to showroom customer, and weighed against the front-end gross of the vehicle it helped sell — traced through the Vehicle Identification Number.
Air-gap every lead, independently and proactively.
A dedicated phone extension, a dedicated inbox, a UTM tag — so no vendor-supplied report is the only record of what happened.
Link online interactions with showroom customers.
Every lead, however it arrived, became a source-tagged CRM record — closing the gap between a click and a person on the lot.
Weigh ad spend against the profit it produced.
Each listing’s prorated cost against the front-end gross of the VIN it sold — the only comparison that matters to a dealership’s P&L.
03 — REPLICATION OFFER
ESTIMATED VALUE
$76,100
The estimate doesn't include efficiency gain that comes from finally knowing which ads bring profitable customers — and which do not.
One dealership,
one quarterly audit, free.
To extend the evidence base, one North American dealership will receive a complete Banner-VIN-Profit audit on live advertising through Q4 2026 — in exchange for anonymized data contributed to the follow-up study, which reports practices that improve advertising ROI rather than merely diagnose the waste.
ESTIMATED VALUE
$76,100
The estimate does not include efficiency gains that come from knowing which ads bring profitable customers.
04 — CONTACT
Tailor the benefits of this research to your team's needs.
The method in this paper was built to be run, not cited. Bring your own numbers and we will find if your advertising traces to profitability—and what to do about it if it doesn't.
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