How to Improve Google Ads Quality Score and Lower Your CPC
Low quality score = high cost per click. Optimize ad relevance, expected CTR, and landing page experience to raise your Google Ads quality score and reduce costs.
Google Ads auctions work on a bidding model. But in this auction, the highest bidder doesn't always win.
Google calculates an Ad Rank for every ad:
Ad Rank = Bid × Quality Score × Expected Ad Extensions Impact
The implication: a competitor with a higher quality score can outrank you while bidding less and paying less per click.
Understanding and improving quality score is the foundation of competitive advantage in Google Ads.
What Is Quality Score?
Quality score is Google's 1-10 rating for each keyword. It's composed of three components:
| Component | Weight | What It Measures |
|---|---|---|
| Expected Click-Through Rate (CTR) | High | Predicted likelihood of the ad being clicked |
| Ad Relevance | Medium | Alignment between ad copy and keyword |
| Landing Page Experience | High | Whether the page meets user expectations |
Quality score is calculated in real time — it can vary with each auction. The "1-10" value you see in Ads Manager is an average based on the past 90 days and updates with a delay.
Component 1: Expected Click-Through Rate (CTR)
Google predicts the probability of your ad being clicked for a given search. This prediction is shaped by the ad's historical performance, industry averages, and keyword type.
4 Ways to Improve Expected CTR
1. Write a strong headline
The ad headline should reflect the search term and present a clear value proposition.
| Weak Headline | Strong Headline |
|---|---|
| "Quality Products" | "Same-Day Dispatch — 200+ Products" |
| "Contact Us" | "Free Analysis — Response in 24 Hours" |
| "Our Services" | "Google Ads Management — Guaranteed ROAS" |
2. Activate ad extensions
Extensions (sitelinks, callouts, structured snippets) visually expand your ad and create more clickable surface area.
Essential extensions:
- Sitelinks (at least 4)
- Phone number (especially mobile)
- Callouts (strong points, free shipping, return guarantee)
3. Use negative keywords
Ads shown for irrelevant searches lead to low CTR. Negative list cleanup directly impacts quality score.
4. Optimize ad scheduling
During low CTR periods (nights, weekends — varies by product), restrict impressions. This raises the overall CTR average.
Component 2: Ad Relevance
Measures how closely your ad copy matches the keyword triggering the auction.
Broad match + single ad group + generic ad copy inevitably lowers relevance and wastes budget. Create separate ad sets for each keyword group.
SKAG Structure (Single Keyword Ad Group)
The structure that achieves maximum relevance: a separate ad group for each keyword.
Ad Group: "Google Ads management"
Keyword: [Google Ads management]
Ad: "Google Ads Management | Expert Agency | Free Analysis"
Ad Group: "Facebook ad agency"
Keyword: [Facebook ad agency]
Ad: "Facebook Ad Agency | Meta Ads Expert | Guaranteed ROAS"
In this structure, every ad reflects exactly what the user searched for → relevance is maximized.
Dynamic Keyword Insertion (DKI)
The {KeyWord:Default Headline} syntax automatically inserts the search term into the headline. Use carefully — search terms can sometimes produce unexpected results.
Component 3: Landing Page Experience
The most neglected component of quality score. Google evaluates the page your ad directs to on these criteria:
- Page content relevance — Does the keyword match the page content?
- Page speed — LCP (Largest Contentful Paint) < 2.5 seconds
- Transparency — Is contact information and privacy policy present?
- Navigation ease — Can users easily find what they need?
- Mobile friendliness — Responsive design
Landing Page Relevance Check
Whatever your ad says, the landing page must deliver the same message:
| Ad | Landing Page |
|---|---|
| "Google Ads Management" | H1: "Google Ads Management Service" |
| "Free analysis" | Form immediately visible above the fold |
| "30% discount" | Discount clearly shown in price table |
Use Google Search Console to check your landing pages' Core Web Vitals scores. The page experience signal affects both quality score and organic ranking — improvement benefits two channels at once.
Quality Score and Auction: A Concrete Calculation
Let's make the impact of quality score on CPC concrete:
| Competitor | Bid | Quality Score | Ad Rank | CPC Paid |
|---|---|---|---|---|
| You | £5.00 | 8 | 40 | ~£2.62 |
| Competitor A | £8.00 | 5 | 40 | ~£5.00 |
| Competitor B | £3.00 | 4 | 12 | — |
In this table, you and Competitor A have the same Ad Rank. But you pay £2.62, Competitor A pays £5.00. The quality score difference lets you achieve the same position at 48% lower cost.
Practical Optimization Plan
Week 1: Audit
- Record the quality score of all keywords (1-10)
- List keywords with quality score < 5
- Run landing page speed test (PageSpeed Insights)
Week 2: Structure
- Restructure ad groups with low relevance
- Add or update ad extensions
- Clean up negative keyword list
Weeks 3-4: Pages
- Align landing pages with ad messages
- Fix mobile speed issues
- Launch A/B test (headline and CTA)
Month 2+: Monitoring
- Weekly: Quality score trend, CPC change
- Monthly: Ad rank report, Search Impression Share
3 Most Common Mistakes
1. Broad match + low budget Broad match spends budget on irrelevant searches. Start with exact or phrase match on small budgets.
2. Leaving landing pages unchecked Google's "Recommendations" section often flags landing page issues. Check weekly.
3. Bid-focused rather than quality-focused optimization Raising bids is a short-term fix. Improving quality score lowers costs in the long run while improving rankings.
If you want to strengthen your Meta Ads strategy alongside Google Ads, see our Meta Ads ROAS optimization article.
Summary: 3 Keys to Improving Quality Score
- Tighten ad group structure — Separate, relevant ad copy for each keyword group
- Align landing pages to ads — Message match is the fastest path to quality score improvement
- Activate extensions for CTR — Larger ad surface = more click opportunities = better CTR signal
Quality score optimization is Google Ads' highest-return but least-noticed discipline. While your competitors compete with bid increases, you can show ads both more cheaply and in higher positions — by competing on quality.
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