Automated extensions show only when they're predicted to improve your text ad performance. To see when automated extensions showed, and to understand their impact, check your extensions' performance.

When would an automated extension be applied in Google?

If Google sees that one of your goals is getting people to call you (for example, with the phone number listed), it may set up a call extension. This means you can add your phone number to your ad, and users can call you with one click.

Where are automated extensions such as seller ratings shown?

When Google predicts they'll improve ad performance, automated extensions, such as Seller Ratings are shown.