What Is Quality Score in Google Ads and How Do You Improve It?

If you’ve spent any time inside a Google Ads account, you’ll have come across Quality Score — a number between 1 and 10 assigned to each of your keywords. It might seem like just another metric to track, but Quality Score has a direct impact on how much you pay and where your ads appear.

Understanding what Quality Score measures and how to improve it is one of the most effective ways to get more from your Google Ads budget. This guide explains the mechanics and gives you practical steps to push your scores higher.

What Quality Score Measures

Quality Score is Google’s assessment of how relevant and useful your ads are to users searching for a given keyword. It’s made up of three components: expected click-through rate (CTR), ad relevance, and landing page experience. Each component is rated as ‘Above Average’, ‘Average’, or ‘Below Average’, and together they produce a score from 1 (poor) to 10 (excellent).

Expected CTR predicts how likely users are to click your ad when it appears for that keyword, based on historical performance. Ad relevance measures how closely your ad copy matches the search intent behind the keyword. Landing page experience assesses whether the page users land on after clicking is relevant, fast-loading, and easy to navigate.

It’s worth noting that Quality Score is a diagnostic tool — it reflects past performance rather than directly controlling your ad auction outcome. What actually determines your ad position is Ad Rank, which combines your bid with a quality-based multiplier. A high Quality Score means you pay less for the same position, which is why improving it directly lowers your costs.

Why Quality Score Matters for Your Ad Costs

The relationship between Quality Score and cost is significant. Advertisers with high Quality Scores (8–10) can pay considerably less per click than competitors with lower scores, even when ranking in the same position. Conversely, a low Quality Score (1–3) means you pay a premium for every click and may find it hard to compete at all.

This is by design: Google rewards advertisers who create relevant, useful experiences for searchers. The system benefits users (who see better ads), Google (whose platform stays trusted), and well-managed advertisers (who get cheaper clicks). For UK businesses competing in expensive sectors, improving Quality Score can be one of the fastest ways to reduce cost per acquisition.

How to Improve Your Quality Score

Start with ad relevance. Each ad group should contain tightly themed keywords, and your ad copy should directly reference those keywords. If your ad group contains the keyword ‘emergency boiler repair’, your headline should include that phrase or something very close to it. Avoid ad groups stuffed with loosely related terms — split them into tighter groups instead.

Improve expected CTR by writing compelling ad copy. Test different headlines, include numbers, unique selling points, and strong calls to action. Use all available ad extensions — sitelinks, callouts, structured snippets, and call extensions — as these increase your ad’s footprint and improve CTR significantly.

Tackle landing page experience by ensuring your page loads quickly, works well on mobile, and delivers what the ad promises. If your ad promotes a specific service, the landing page should focus on that service rather than sending users to a generic homepage. Reduce page load times, improve readability, and make your contact details or booking form easy to find.