Can I use my own review data?

Yes, you can submit a feed with your own review data following the product reviews feed specification.

How long does approval take?

Google typically processes product ratings feeds within a few days but it can take up to two weeks for ratings to appear on ads.

Do product ratings affect Quality Score?

Google has not confirmed a direct Quality Score impact, but CTR improvements from ratings often result in lower CPCs over time.

Google Merchant Center Product Ratings Guide

Product ratings display aggregated star ratings directly on your Shopping ads. A product showing 4.5 stars with 200 reviews outperforms an identical product with no rating display, particularly at the same price. This guide covers the requirements, setup process, and common rejection reasons.

What Product Ratings Are

Product ratings are a Merchant Center feature that pulls review data and displays aggregated scores on your Shopping listings. The data can come from Google's own customer reviews program, third-party review aggregators, or your own feed. Google shows a star rating and review count in the ad unit when sufficient reviews exist.

Eligibility Requirements

To display product ratings you need a minimum of 3 reviews per product. However, Google recommends at least 50 reviews across your product catalog before ratings become meaningful in your ads. Products with fewer than 3 reviews show no rating display at all, which is preferable to showing 1 review at 5 stars (which consumers treat skeptically).

Your store must also have a minimum of 50 total reviews across all products. Accounts with very thin review profiles are deprioritized for the ratings feature.

How to Submit a Product Ratings Feed

In Merchant Center, navigate to Marketing then Product ratings. You submit a ratings feed that maps product identifiers (GTIN, MPN, or SKU) to aggregated review data. The feed format is XML and follows Google's product reviews feed specification. Required fields include the product identifier, the average rating, the rating count, and a minimum and maximum rating scale.

If you use a third-party review platform such as Trustpilot, Bazaarvoice, or Yotpo, many of these platforms have direct integrations with Merchant Center that automate the feed submission. Check your review platform's documentation for the Merchant Center integration option before building a manual feed.

Common Rejection Reasons

The most common rejection is a product identifier mismatch. The GTIN or MPN in your ratings feed must exactly match the identifier in your product feed. A single character difference causes the rating to not associate with the product.

Manipulated reviews are a suspension risk. Google's systems flag unusual rating distributions, such as a product acquiring dozens of 5-star reviews in a short period with no variation. This pattern appears in accounts that have purchased reviews. If detected, it can contribute to an account-level suspension, not just a ratings rejection.

Ratings that appear on competitor products due to shared GTINs are another source of errors. If multiple sellers use the same GTIN for slightly different product variants, ratings from all sellers aggregate together, which can distort the display for your specific product.

FAQs

Can I use my own review data? Yes, you can submit a feed with your own review data. It must follow the product reviews feed specification and cannot be manipulated or incentivized.
How long does approval take? Google typically processes product ratings feeds within a few days, but it can take up to two weeks for ratings to appear on ads.
Do product ratings affect Quality Score? Google has not confirmed a direct Quality Score impact, but CTR improvements from ratings often result in lower CPCs over time.