// GMC add-on setup guide

How to set up Product Ratings in Google Merchant Center

Product Ratings display 5-star reviews under Shopping ads. Merchants report 15-40% CTR lifts once enabled — but Google requires a minimum of 50 total reviews across at least 3 products, from an approved review aggregator, before you can apply.

// Add-on
Product Ratings
// Impact
+15–40% CTR
// Setup time
6 steps · ~15-30 min
// Direct link
Open in GMC ↗

Requirements

  • ✓ A verified and approved Merchant Center account
  • ✓ At least 50 total product reviews across your catalog
  • ✓ Reviews from an approved aggregator (Trustpilot, Bazaarvoice, PowerReviews, Yotpo, Reevoo, Verified Reviews) OR direct feed submission
  • ✓ Reviews delivered in the correct XML format
  • ✓ Interest form submitted + approved by Google (2-4 weeks)

Step-by-step setup

  1. 1
    Submit the interest form
    Merchant Center → Products → Product Ratings → "Get started" → fill Google's Product Ratings interest form. Approval takes 2-4 weeks.
  2. 2
    Choose a review source
    Option A: Existing aggregator (Trustpilot etc) — they can send Google directly. Option B: Direct submission — you host an XML feed Google fetches daily.
  3. 3
    Configure aggregator
    If using an aggregator, log into their dashboard → integrations → Google Product Ratings → enter your Merchant Center ID.
  4. 4
    Or set up a direct feed
    Host an XML file matching Google's Product Reviews schema (product ID, review text, star rating, reviewer name, date, verified purchase flag).
  5. 5
    Wait for review data ingest
    Google needs 24-72 hours to ingest first reviews after configuration. Star ratings start showing on ads once ingest is stable.
  6. 6
    Monitor coverage
    Product Ratings tab shows which products have ratings, average stars, review count. Aim for 3+ reviews per product for stars to display.

Common issues + how to fix

⚠
Below 50-review threshold
Product Ratings won't activate until you cross 50 total reviews. Use a review-request email sequence to accelerate.
⚠
Reviews not tied to correct product
Aggregator must use the same product ID as your feed. Mismatches = orphaned reviews.
⚠
Reviews stuck at "pending"
Google filters low-quality reviews (short text, no purchase verified). Encourage detailed verified reviews.

Related guides

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