What Are Google Ads Seller Ratings?
Seller ratings are a rating of the service your business provides out of 5 stars. This rating can be displayed within the body of your ads.
In order to be eligible for a seller rating, at least 100 unique reviews must have been collected over the past 12 months. Reviews can be collected by Google, from your website, or more commonly from a third party such as:
A full list can be seen here, https://support.google.com/google-ads/answer/2375474.
To find out if you have a seller rating already, replace www.example.com in the following URL with your own domain and enter this into your browser:
If you do have a rating this does not necessarily mean it will be displayed.
What Are Google Ads Product Ratings?
A product rating is a rating out of 5 stars of a particular product. This rating does not relate to the business selling the product, but the product itself.
Reviews are collected by Google, uploaded to Google Merchant Center yourself, or collected by a reviews aggregator like those listed below:
A full list of approved aggregators can be found here: https://support.google.com/merchants/answer/7045996.
The most common way to match product reviews to the products you are advertising is using GTINs, Global Trade Item Numbers.