Anyone else experiencing 30% conversion discrepancy between Google Ads and Shopify Analytics?

[gooconvert]

Hello,

I know that different systems will track their analytics differently. However when comparing my conversion stats from Google Ads to Shopify's Analytics the discrepancy in conversions were around 25-30% off. (i.e. Google says there were 130 conversions due to marketing and Shopify says only 100). This applies to both the conversion amount and conversion value.

That was over a three month time span of Oct 2021 - Dec 2021 with over 5,000+ transactions so I think that is enough to be statistically significant.

I was comparing this page:

https://ads.google.com/aw/conversions

to:

xyz.myshopify.com/admin/reports/sales_attributed_to_marketing

I could live with 10% to 15% discrepancy but 30% is too high. All my ads use ROAS so if I have something wrong with my conversion tracking that would be quite bad.

Anyone else having this issue?

[ekuplu]

You are totally right. 30% sounds more than it should be. We mostly observe 5% to 15% with the Analyzify clients. Is your store based in Europe and are you using any cookie consent apps? There might be something that is blocking your scripts. I can try helping more if you provide more information here. 

I have written a detailed article on this topic in case you want to check it out: https://analyzify.app/hub/discrepancy-google-analytics-shopify/