Quality Score 

Quality Factor Importance / Quality Score

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By Joana · Last updated on 02.03.2026

The quality score is a central metric in the SEA area and plays a crucial role in the determination of the ad rank in Google Ads. Advertisers can improve their ad position with a high quality score while simultaneously lowering the cost per click. In this article, you will learn how the quality score is composed, why it is so important, and how you can optimize it.

Quality Score

The Quality Score plays a crucial role in the auction system of Google Ads. It has been present in Google Ads since 2005. But what is it used for?
The complete components for calculating the KPI have not been published by Google to this day. It is known that it consists of three different components: Ad Relevance, Expected Click-Through Rate, and User Experience with the Landing Page.

Based on the metrics, Google can assess whether the ad texts are of high quality, whether the selected keywords can generate a potentially high click-through rate, and whether the landing page is user-friendly. The three factors are rated on a scale from 1-10 (1 being the worst, 10 being the best). The resulting Quality Score is multiplied by the set keyword bid, resulting in the Ad Rank.

Why is the Quality Score important and how can I optimize it?

Google Ads uses an auction system in which all advertisers participate who bid on the same keyword. However, it is not the competitor who places the highest bid that wins, but the advertiser with the highest Ad Rank. This gives everyone the opportunity to achieve a higher ad position than their competitor, even with a lower bid.

Therefore, it is important to continuously develop the campaign structure to address the target audience as accurately as possible. Additionally, ad texts and landing pages should be regularly revised. If the three factors are continuously improved and thus the Quality Score is increased, advertisers can significantly reduce their CPC in the medium term.

Do you want to engage in PPC marketing and need support? Then contact us! Do you want to learn more or have your team trained on this topic? Then check out our Analytics Seminars.

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