Case study · Paid Performance Media
Measurement first. Then 46% lead growth in a saturated market.
An online vehicle marketplace in the automotive classifieds sector, serving dealership networks and private sellers across South Africa.
The situation
The marketplace came out of the Covid dip with its dealership network demanding rapid lead growth. The market it had to grow in was unforgiving: a mature category with entrenched leaders scaling aggressively, well-funded disruptors buying share with new pricing models, and dealer groups that had discovered online advertising for themselves. Costs per click rose accordingly, and the budget could not simply be raised to match.
Underneath the media problem sat a measurement problem. Tracking lived in hard-coded scripts scattered across the site, the analytics property was legacy Universal Analytics approaching its sunset, and lead types such as calls and form submissions could not be cleanly attributed to the sources that produced them.
The assumption
Classifieds wisdom says share follows spend: outbid the leaders or settle for defending what you hold. The platform dashboards supported the story, reporting a media mix that looked broadly fine. By that logic the only lever left was a bigger budget, and a rival would always have a bigger one.
What the evidence showed
We rebuilt the measurement layer before touching the media. A new GA4 event architecture with custom dimensions for vehicle brand, model and lead type, every tag consolidated into Google Tag Manager, and every call and form submission tied back to its source.
The rebuilt data showed that demand was not evenly saturated. Specific brands, models and regions were producing leads at a fraction of the blended cost, while a meaningful share of spend sat in segments the dashboards had graded as fine. The budget was not too small. It was in the wrong places.
What we did
- i.Rebuilt the analytics architecture first: GA4 events and custom dimensions designed around the business rather than the default schema, with all tracking migrated out of hard-coded scripts into Google Tag Manager.
- ii.Reallocated budget on first-party evidence: spend followed the models, brands and regions that produced leads efficiently, informed by daily monitoring of the category and competitor behaviour.
- iii.Tightened the keyword strategy to high-intent, industry-specific queries, cutting spend that bought traffic but not leads.
- iv.Added upper-funnel channels so the brand stayed front of mind for buyers not yet in market, rather than fighting rivals only at the bottom of the funnel.
- v.What we did not do: match competitor budgets. The strategy was built to win on allocation, not volume.
Results
Vehicle leads
2023 vs 2022, measured in GA4
Vehicle leads grew 46% in 2023 against the prior year, measured in the rebuilt GA4 property where every lead type is attributed to its source. Growth arrived without matching rival budgets, in a year when category costs rose. The dealership network got the volume it was demanding, and the engagement matured from campaign execution into ongoing measurement and growth advisory.
The lesson
In saturated markets the question is rarely more budget. It is whether your measurement can find mispriced demand.