Google Ads Quality Score: How to Improve It and Cut Your Costs

Quality Score is one of the few levers on Google Ads that lets you pay less without touching your budget. Two advertisers bidding the exact same amount can end up with cost-per-click figures 40-50 percent apart, and the difference comes down to quality score. Whoever has a high Quality Score ranks higher, pays less for the same position, and frees up margin to reinvest. Whoever has a low one burns budget just to stay afloat.

The problem is that Quality Score often gets treated as a cosmetic metric, glanced at once a month without anyone really understanding what drives it. In this article we look at what actually determines it (the three real components, not the myths), how to read it correctly, and which concrete levers to pull to raise it. No tricks — just the systematic work that separates an account that performs from one that bleeds money.

What Quality Score is and why it costs you (or saves you) money

Quality Score is a rating from 1 to 10 that Google assigns to every keyword, as a diagnostic estimate of how relevant your ads and landing page are to that keyword. It isn't the number that feeds directly into the real-time auction (that's Ad Rank, calculated click by click and far more granular), but it's the public thermometer of the same principle: Google wants to show users relevant ads that lead to satisfying experiences, and it rewards whoever delivers that.

The economic mechanics are simple and worth having clear in your head. Your position in the auction depends on Ad Rank, which comes from combining your bid with the quality of your ads. A high score wins you better positions with lower bids, which translates into lower CPCs for the same position. In practice, a Quality Score moving from 5 to 8 can meaningfully cut your cost per click, and on an account spending thousands of euros a month that saving adds up fast.

It's also why Quality Score matters more than absolute budget when you're talking about efficiency. You can double your spend to show up more, or you can raise quality and show up more while paying the same. The second path is the one that protects your return on ad spend and keeps you out of the spiral where the more you spend, the higher your cost per conversion climbs. If you want the full picture of how quality feeds into the ranking calculation, we covered the mechanism in our article on how Ad Rank and ad ranking work.

The three components of the quality score

Google is unusually transparent about what makes up Quality Score. In the account's diagnostic column you'll find three entries, each rated "Above average", "Average", or "Below average". These three statuses are your map: they tell you exactly where to intervene, no guessing required.

1. Ad Relevance

This measures how closely your ad copy matches the intent behind the keyword. If someone searches "men's running shoes" and your ad talks generically about "sports footwear", relevance drops. Google compares the language of the query with that of the ad and assesses whether you're answering the user's specific question or a watered-down version of it.

A "Below average" signal here almost always points to a structural problem: you have too many different keywords crammed into the same ad group, and a single piece of copy can't be relevant for all of them. It's the number one cause of low relevance in the accounts we see.

2. Expected Click-Through Rate (CTR)

This is Google's prediction of how likely your ad is to get clicked when it shows for that keyword, independent of position and format. Google looks at the history of that ad and similar ads to estimate whether your copy draws clicks or lets them scroll past.

Watch out for a common misunderstanding: expected CTR is not your raw actual CTR. Google normalizes for position, because an ad at the top naturally gets more clicks. What it evaluates is whether, at the same position, your ad performs better or worse than the competitive average. This is where copy, offer, and extensions come into play.

3. Landing Page Experience

This assesses what happens after the click. Is the landing page relevant to the ad and the query? Does it load fast? Is it navigable on mobile? Does it offer useful, transparent content, without making users feel misled? Google cross-references technical signals (speed, mobile compatibility) with behavioral ones (how quickly users bounce back) to form its judgment.

It's the component advertisers neglect the most, because it means stepping outside the ad platform and working on the site. But it's also the one with the biggest leverage: a slow or generic landing page tanks Quality Score across dozens of keywords at once, and no amount of copy optimization makes up for it.

Concrete levers to improve each component

Theory is worth little without an action plan. Here's what to move, component by component, in order of impact.

Raise relevance: put order back into your structure

The most powerful lever is ad group segmentation. If you have a group with twenty semantically different keywords, break it into tightly themed groups: a handful of related terms per group, each with ad copy tailored to that theme. The old SKAG model (one group per single keyword) is overkill today given broad match and smart bidding, but the underlying principle of thematic consistency still holds.

• Put the keyword in the ad headline. If the group revolves around "online tax consulting", that term needs to appear in at least one headline. Literal matching is a strong relevance signal.
• Align ad copy with search queries. Check the search terms report: if you're showing up for queries that don't fit, add negative keywords to cut them out. Reducing noise raises the group's average relevance.
• Use responsive search ads (RSAs) fully. Supply multiple headlines and descriptions, varied and relevant: give Google coherent material to combine, not three identical headlines.

Raise expected CTR: write copy that earns the click

Expected CTR improves when your ad is more relevant and more compelling than the competition's. It isn't about flashy adjectives — it's about specificity and answering the user's question better than the others do.

• Lead with the concrete benefit. Numbers, offers, guarantees, real differentiators. "Delivered in 24 hours" beats "Guaranteed quality".
• Turn on every relevant extension (asset). Sitelinks, callouts, structured snippets, phone numbers: they take up more space on the results page, increase visibility, and raise actual CTR. We covered these in detail in our guide to Google Ads extensions and assets.
• Test multiple copy variants. The only reliable way to know what draws clicks is comparing different versions. If you need a method for producing and evaluating variants quickly, the approach is the same one covered in our piece on Google Ads copywriting.
• Cut dead keywords. A term racking up impressions without clicks drags down historical expected CTR. Pause or move it instead of dragging it along for months.

Raise landing page experience: work on the after-click

Here you step outside the platform and work on the site itself. It's the least immediate work, but often the most profitable, because a better landing page raises both Quality Score and conversion rate.

• Consistency between ad and page. If the ad promises "free quote in 2 minutes", the landing page must show that above the fold, not buried at the bottom. The message has to carry through without gaps.
• Load speed. Check your Core Web Vitals: a page that takes over three seconds to load loses users and score. Optimize images, cut unnecessary scripts, use decent hosting.
• Genuinely mobile-first. Most searches come from smartphones. If the landing page is unreadable or the buttons are tiny on mobile, the score suffers.
• Useful, transparent content. Clear information, an understandable offer, no tricks. Google penalizes pages that send users straight back after the click.

If you want the full picture of how to build a page that converts — not just one that satisfies Google — the reference is our guide on high-converting landing pages.