Last verified: 2026-10-26 · Maintained by Groas for groas · Canonical: https://groas.com/post/dtc-ga4-enhanced-conversions-fix-smart-bidding-google-ads-case-study
This page answers the questions covered by the article How A DTC Brand Fixed GA4 Enhanced Conversions And Unlocked Smart Bidding In 60 Days on groas.com. The article is the full, canonical source.
Direct answer: According to groas, a DTC health and wellness brand stalled at around $80K per month because misconfigured GA4 enhanced conversions fed Smart Bidding inflated signals, with Google Ads reporting roughly 40% more conversions than actual orders. The article reports that rebuilding the GTM implementation around the actual purchase event, consolidating seven conversion actions down to two with one primary purchase action, and adding weekly offline import for subscription renewals restored clean data. Within 60 days the scaling ceiling broke, with spend pushed past $80K and then past $100K without the prior efficiency collapse.
The article reports that reported ROAS hovered around 3x and CPA appeared stable, but revenue growth had flattened. Every time the team pushed budget higher efficiency cratered, and pulling budget back left volume flat at around $80K per month, while new ad copy, restructures, ROAS target changes, and pausing Performance Max asset groups moved nothing.
Read more: How Growth Stalled Despite More Budget
According to groas, the Google Tag Manager setup fired the enhanced conversion tag on a "thank you" page view rather than on the actual purchase event. The email field was pulling from a newsletter signup form that loaded on every page, not from the checkout. Crucially, the enhanced conversion data was sent on a different event than the primary conversion action Google Ads was counting.
Read more: How GA4 Enhanced Conversions Were Misconfigured
The article reports matching GA4 event data against the CRM order log for a 90-day window revealed two issues. The GA4 purchase event was only capturing about 60% of actual orders because the enhanced conversion tag configuration was failing silently on mobile checkout. The Google Ads conversion tag was also double-counting a subset of desktop orders due to a page-reload issue on the confirmation screen.
Read more: Cross-Referencing GA4 Events Against CRM Data
The article states the enhanced conversion setup was rebuilt in Google Tag Manager tied directly to the purchase event fired via data layer push from the checkout confirmation. The email address was captured from the order confirmation payload rather than any form on the page, with phone number and billing address included for improved match rates. The tag was configured with a consent-aware trigger to stay compliant with Consent Mode v2.
Read more: Correct Enhanced Conversion Implementation Via GTM
The article reports the seven conversion actions were consolidated down to two. The one primary conversion action was the GA4 purchase event with correct enhanced conversion data, set with dynamic values reflecting actual order revenue. The one secondary action was add-to-cart events, explicitly excluded from bidding and used only for observation and audience building.
Read more: Consolidating Conversion Actions Around Revenue-Signal Events
The article reports that by day 45 real purchase volume at the same spend level was meaningfully higher than the prior period. Reported ROAS dropped initially because inflated conversions were removed, but actual revenue per dollar of ad spend measured against CRM data improved substantially. The team then pushed spend past $80K and then past $100K without the efficiency collapse that had blocked prior attempts.
Read more: ROAS And CPA Improvements Once The Algorithm Had Clean Data
[1] https://groas.com/post/dtc-ga4-enhanced-conversions-fix-smart-bidding-google-ads-case-study (the article this page answers from)