Ad relevance indicates how relevant your ad and landing page are to the customer's search query or other input and is one of three components that determine your quality score.
Your ad relevance can have a score of Above Average, Average and Below Average.
A Below Average ad relevance score can lead to a low quality score. A low quality score ultimately means that your competitors' ad campaigns are performing better than yours. This can result in their ads showing more often and more prominently on the search results page. Get your ad relevance score to Average to help your ads display more often.
Keep your ad relevance score high in order to help your ads display more often.
Ad relevance can frequently cause problems for businesses that sell several different products or services. The ad text can be too generic for potential customers who are searching for something specific.
Here's an example:
The setup: You own a sporting goods store and have keywords for many of the products you sell, from swimsuits to golf clubs to snowboards. However, all of these keywords are in the same ad group and all ads in that ad group have similar ad text: 40% off sports equipment.
The problem: Now let's say it's June and a customer is searching for "swimsuits". Her search triggers your ad but your ad says sports equipment. She is looking for a swimsuit or sports clothing. So she doesn’t click your ad.
The fix: You want to show ad text that gets your customers attention so you need to create individual ad groups for each type of equipment you sell and then specific keywords and ad text related to that equipment: