The PMax reality check
Performance Max accounts for the majority of Google Ads revenue today. It's also the campaign type advertisers complain about most: opaque placements, cannibalized brand traffic, and conversions that look great in Google Ads but vanish in GA4.
The good news: with the right structure, PMax outperforms manual Search + Shopping. The bad news: most accounts run it wrong.
Five rules that change PMax economics
- Separate brand from non-brand. Add brand keywords as a negative list to PMax (or use the brand exclusion feature). Otherwise PMax claims credit for searches you'd win for free.
- Feed quality > everything. Ninety percent of Shopping-heavy PMax performance comes from titles, attributes and high-quality imagery. Audit before tweaking bids.
- Use asset groups like ad groups. One asset group per product category or audience theme - never one giant catch-all.
- Feed it real conversion data. Enhanced conversions, offline conversion imports for lead gen, and value-based bidding. PMax without good signal is gambling.
- Set realistic learning periods. Don't change bids or budgets for the first 14 days. PMax punishes restless hands.
Insights worth digging for
The new "Insights" tab finally surfaces search themes, audience signals and asset performance. Spend 30 minutes a week here. Most accounts ignore it and lose money to the same bad placements every month.
When PMax is the wrong tool
PMax shines for ecommerce with clean feeds and lead gen with strong offline conversion data. It's still a poor fit for new brands with no first-party data, complex B2B journeys, or accounts under €1,500/month. In those cases, structured Search + manual Shopping is more efficient.
