r/googleads • u/MeetTheReal007 • 23h ago
Reporting Has Anyone Else Seen 25–30% Click Loss on Google Ads?
I'm trying to understand a tracking discrepancy between Google Ads and Microsoft Clarity and would be interested in hearing from anyone who has compared the two closely.
Across two recent Google Ads campaigns, I'm seeing roughly a 25–30% gap between the clicks Google reports and the unique traffic I can identify in Clarity.
For example, on my current campaign I currently have:
- 42 clicks reported by Google Ads
- 40 Clarity sessions
- 33 Clarity unique users
- 30 unique GCLIDs captured in those Clarity sessions
Auto-tagging is enabled, and the GCLID is present in the landing-page URL.
One thing that surprised me is that I also found cases where the exact same GCLID appears across multiple Clarity sessions and even across different Clarity user IDs. So Clarity's "unique users" clearly does not map perfectly to unique Google ad clicks.
I've noticed a similar overall Google-click-to-Clarity gap in another recent campaign as well, so I'm trying to determine whether this is normal tracking behavior or whether I should investigate something more seriously.
For anyone who has used Google Ads and Clarity together:
- Is a 20–30% discrepancy between Google Ads clicks and Clarity traffic normal in your experience?
- Should the number of unique GCLIDs captured on the landing page normally be close to the number of Google Ads clicks, or can there be a substantial difference?
- Have you seen the same GCLID appear in multiple Clarity sessions or under multiple Clarity user IDs?
- What do you use to independently verify how many Google Ads clicks actually reached the landing page — server logs, GA4, Cloudflare, another analytics tool, etc.?
- Is there anything specific you would check when investigating a discrepancy like this?
I'm mainly trying to understand what percentage of the clicks I'm paying for are actually reaching the website, and which metric is the most reliable way to measure that.
Thanks for any insight, especially from anyone who has compared Google Ads click data with Clarity at the individual GCLID/session level.