Google Ads Quality Score: what it is and why it matters
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Quality Score directly influences how much you pay per click in Google Ads. A good score can reduce costs by 30-50%. Here's what drives it and how to improve it.
What Is Quality Score
Quality Score (QS) is Google's rating of each keyword in your account, from 1 to 10. It reflects how relevant your ad is to the user searching that term. Ad Rank = bid × Quality Score, so double the QS means you can bid half as much and still appear higher. In practice, QS 8 vs 4 can reduce your CPC by 30-50%.
The 3 Factors That Form Quality Score
Expected CTR: estimated probability the user clicks your ad for that term. Ad Relevance: how well your ad copy matches search intent. Landing Page Experience: whether your destination page answers the query, loads fast, and works on mobile.
Score Interpretation
1-3: serious problem, you're overpaying. 4-6: average, room to improve (most newly acquired accounts sit here). 7-8: good, competitive costs. 9-10: excellent, minimum possible CPC for that term.
What Is Quality Score
Quality Score (QS) is Google's rating of each keyword in your account, on a scale from 1 to 10. It reflects how relevant your ad is to the user searching that term.
Why it matters in money: Google calculates Ad Rank (your ad's position) as bid × Quality Score. Double the QS compared to a competitor means you can bid half as much and still appear higher. In practice, QS 8 vs. QS 4 can reduce your CPC by 30-50%.
The 3 Factors That Form Quality Score
1. Expected CTR
The estimated probability the user will click your ad for that search term. Google compares your ad's historical performance against the industry average. Ads with relevant titles that include the search term have higher CTR.
2. Ad Relevance
How well your ad content matches the intent behind the search. If someone searches "criminal defence lawyer London" and your ad says "Full Legal Services", relevance is average. If it says "Criminal Defence Lawyer, 24h Consultation", relevance is maximum.
3. Landing Page Experience
Google evaluates whether the page you send users to answers the search intent, loads fast, and is easy to navigate on mobile. A slow page (over 3 seconds on mobile) automatically penalises QS.
How to Interpret the Score
- 1-3: Serious problem - your ad, page, or ad group isn't relevant to that term. You're massively overpaying.
- 4-6: Average. Room to improve. Most newly acquired accounts sit here.
- 7-8: Good. Costs are competitive.
- 9-10: Excellent. You're getting the lowest possible CPC for that term.
Note: Quality Score is displayed in Google Ads at keyword level, but Google removed QS columns from the default view. You need to add them manually via Columns > Modify columns > Quality Score.
Mistakes That Destroy Quality Score
Ad groups that are too broad
An ad group with 50 different keywords can't have ads relevant to all of them. Best practice: 5-15 keywords per group with similar intent, and ads written specifically for that theme.
Generic landing page
Sending traffic to the homepage instead of a page dedicated to the searched term. If someone searches "air conditioning installation" and lands on a general contractor's homepage, the experience is poor and QS will be low.
Ignoring mobile
Over 65% of Google searches are made on mobile. A page that doesn't render well on phones automatically receives a poor Landing Page Experience score.
Why Improving Quality Score Is Harder to Sustain Than to Achieve
The steps are clear on paper: structure the account by theme, write relevant ads, build dedicated landing pages, optimize mobile speed. The problem is that each requires separate resources. Dedicated landing pages mean web development or a flexible CMS. Mobile speed means technical optimization. Restructuring the account means campaigns temporarily lose historical data and performance dips before it recovers.
Quality Score doesn't improve once and stay there. It deteriorates when you add keywords without updating ads, when the landing page changes without mobile testing, or when competitors raise the industry's average CTR. High-QS accounts are actively managed accounts, not accounts optimized once and left to run.
Frequently asked questions
What is Quality Score in Google Ads?
Quality Score is a score from 1 to 10 that Google assigns to each keyword in the account. It's calculated based on three factors: ad relevance to the keyword, estimated click-through rate (eCTR), and landing page experience. A higher Quality Score = lower CPC and better position at the same bid.
How do I improve Quality Score?
The three highest-impact actions: 1) Ensure the ad headline contains the main keyword (ad relevance). 2) Write ads with clear benefits and CTAs that generate high CTR (eCTR). 3) Verify the landing page loads fast, is relevant to the keyword, and has content clearly linked to search intent (landing page experience).
Does a low Quality Score always mean I need to change something?
Quality Score below 5 signals a misalignment between the keyword, ad, and landing page. However, it's not an emergency for every keyword - focus on keywords with high impression volume and low Quality Score. Keywords with few searches and Quality Score 4 can be deprioritized in favor of important ones.
Can Quality Score affect costs in Smart Bidding auctions?
Yes. Although Smart Bidding calculates bids at auction level and doesn't look directly at Quality Score, the components that form Quality Score influence Ad Rank, which determines position and actual cost. A higher Quality Score improves Ad Rank regardless of bidding strategy.
Is a Quality Score of 7-8 enough or should I aim for 10?
Quality Score 7-8 is considered good and doesn't merit disproportionate effort to push to 10. Marginal improvements from 8 to 10 bring smaller cost reductions than those from 4 to 7. Invest optimization time in keywords with Quality Score 3-5 and high volume - that's where impact is most visible.
At DAFE Digital we optimise Quality Score as a standard part of managing your account. Lower CPC, better positions, same budget.
A high Quality Score means you pay less than competitors for the same position. We continuously work on ad relevance, landing page experience and expected CTR.
Adela Mincea
Performance Marketer · Fondatoare DAFE Digital · Formator ANC
Adela is a Performance Marketer with 10+ years of paid media across Europe, the US and Asia. She founded DAFE Digital in 2023 after agency roles in London and Hong Kong, in-house work inside client organisations, and independent consulting across 27+ industries.
