You’ve got happy customers and reviews on your site, but your Google Shopping ads and free listings show no stars. This guide is for store owners who want to fix that. After reading, you’ll know the difference between Product Ratings and store ratings, whether you qualify for each and how to submit your Google Merchant Center customer reviews step by step.
You set up two separate programmes. For Product Ratings, you join through the Product Ratings Interest Form, then upload a reviews data source under Products & store > Reviews. For store ratings, you collect business reviews through Google Customer Reviews or a supported partner. Each has its own requirements[1][3][5].
Before you start, you need two things: a working Merchant Center account with your products already uploaded and genuine customer reviews of your own. If you’re new to feeds, read the beginner’s guide at https://oxfordimpulse.com/beginners-guide-google-merchant-center-feed/ first.
Product Ratings and store ratings side by side
They look similar on screen, but they measure different things.
- Product Ratings aggregate customer reviews of the products you sell. They appear in ads and free product listings as 1 to 5 stars plus a review count[2].
- Store ratings cover your business overall[5].
The requirements differ too. For Product Ratings, Google’s eligibility page lists at least 50 reviews across all products, a data source uploaded at least once a month, a domain matching the one registered in Merchant Center, a standalone or sub-account (not a multi-client account) and unique product identifiers[1]. Store ratings generally need at least 100 eligible, unique reviews and a rating of 3.5 or above to show on ads[5].
Watch out
These are two separate programmes, so plan for each one separately.
Step 1: Check your Product Ratings eligibility
Diagnose before you build anything. Go through the list from Google’s eligibility page[1] and answer each point honestly.
- Count your reviews. Do you have at least 50 across all products combined?
- Check your account type. Open Merchant Center and confirm you’re on a standalone account or a sub-account, not a multi-client account.
- Compare domains. The website your reviews come from must match the registered domain in Merchant Center.
- Confirm you can upload the data source at least once a month.
- Check your product identifiers.
On identifiers: Google wants unique identifiers, meaning a GTIN or brand plus MPN (manufacturer part number)[1]. A GTIN is the barcode number on a product. If you’re unsure where to find yours, see https://oxfordimpulse.com/what-is-gtin-google-merchant-center/ for how it works.
Watch out
Fix the feed before you start the upload. Google asks for unique identifiers[1], so make sure the identifiers in your product feed are the same ones that appear in your review file.
Step 2: Review the policies before you submit
Review data has to follow the Product Ratings policies, so read them before you submit[4]. The main points:
- No spam.
- No phone numbers, email addresses or links inside review text.
- No reviews primarily generated by automation or AI.
- Don’t delete old reviews from the feed.
- No reviews syndicated from other sources.
- Low-star reviews must be shared, not filtered out.
- Incentives are only allowed if they don’t depend on sentiment, and they must be disclosed.
That list rules out the tempting shortcuts: hiding 1-star reviews, adding fake ones or copying reviews from a marketplace. Don’t do any of it.
Tip
If your review app lets customers paste links or contact details into the text, check those fields and remove them before you export.
Step 3: Join the Product Ratings programme
You don’t just upload and wait. Per Google’s setup instructions, you join through the Product Ratings Interest Form first[3].
Timing is where Google’s own pages differ. Different help pages mention up to 2 weeks or 2 to 4 weeks for onboarding[1][2][3]. Don’t rely on one fixed number. Submit the form early and use the wait to work through the eligibility and policy checks above.
Step 4: Add your reviews data source
Once you’re in, add the source. Here’s the path from Google’s upload guide[3]:
- Open Merchant Center.
- Go to Products & store, then Reviews.
- Click the Product reviews tab.
- Click Manage product review sources.
- Click Add product reviews and follow the prompts.
You can send the reviews data source in one of these ways[3]:
- Scheduled fetch, where Google pulls the file from a URL on a schedule
- SFTP or Google Cloud Storage
- Direct upload
- API
Each XML source must stay under 4 GB[3]. If your review provider is a supported aggregator, you can use it instead of building the file yourself[3]. Check this before you hire a developer.
Tip
The data source must be uploaded at least once a month[1], so choose a method your team can keep up. If it’s a manual upload, set a reminder.
Upload mistakes to avoid
- Identifiers that don’t match the feed. The review file must reference the same products you sell. Compare a few rows by hand.
- Dropping old reviews. Each new file should keep the history, not replace it with only the latest batch[4].
- Uploading once and stopping. The monthly upload is a requirement[1].
Step 5: Wait for sync, then check the result
New uploads can take 7 to 10 days to sync[1][2][3]. Give the upload time to sync before you change anything.
After 7 to 10 days, return to Products & store > Reviews and check the status of your review source for errors. Fix the source file, not the symptom. If products aren’t matching, go back to your identifiers. Then search for one of your products on Google and see whether stars and a count appear. Stars may take longer to appear than the sync itself, and display isn’t guaranteed.
Step 6: Set up store ratings with Google Customer Reviews
Store ratings run on a separate track. The aim is to reach the generally required 100 eligible, unique reviews and a rating of 3.5 or above to show on ads[5]. Reviews aren’t added in real time, so expect a delay before new reviews count[5].
Sources include Google Customer Reviews and partners such as Trustpilot, Yotpo and Bazaarvoice[5]. If you already use one of those partners, check whether it feeds Google before adding anything new.
To turn on Google Customer Reviews[6]:
- In Merchant Center, open Settings, then Add-ons.
- Find the Google Customer Reviews card and click Add.
- Sign the agreement.
- Add the opt-in so that it appears after checkout.
The opt-in must be shown to all users after checkout[6], so don’t show it only to customers you expect to be happy. Before you start, check that your store platform, such as Shopify or WooCommerce, lets you add the opt-in after checkout.
Step 7: Keep both programmes healthy
Set a monthly calendar reminder to check your review source status, because the Product Ratings data source must be uploaded at least once a month[1]. Keep collecting reviews, because both programmes set minimum review counts[1][5]. And keep your product feed clean, because Product Ratings need unique identifiers on your products[1].
Pre-submission checklist
For the rest of your Merchant Center setup, see our hub at https://oxfordimpulse.com/google-merchant-center/.
FAQs
How do you get product ratings to show in Google Merchant Center?
What’s the difference between product ratings and store ratings?
How many reviews do you need for Google Shopping star ratings?
What is the Google Customer Reviews programme?
How do you turn on Google Customer Reviews?
How long does it take for ratings to appear?
What rating do you need for store ratings to show on ads?
Can you use Trustpilot or Yotpo for Google reviews?
Why aren’t product reviews showing in Merchant Center?
Can you remove negative reviews from your feed?
No. Google’s policies say low-star reviews must be shared, and old reviews shouldn’t be deleted from the feed[4]. Fix the underlying customer experience instead.
Sources
- Google Merchant Center Help: Product Ratings eligibility support.google.com
- Google Merchant Center Help: Product Ratings basics support.google.com
- Google Merchant Center Help: Upload a product reviews data source to Merchant Center support.google.com
- Google Merchant Center Help: Product Ratings policies support.google.com
- Google Merchant Center Help: Google store ratings: An overview for Merchants support.google.com
- Google Merchant Center Help: Google Customer Reviews: Basics benefits and setup guide support.google.com
