Google Ads Quality Score: The Complete Optimisation Guide

Why Quality Score Matters

Quality Score is Google's rating of the quality and relevance of your keywords and ads. It's scored 1-10 and directly impacts two critical factors: the cost you pay per click and whether your ads show at all.

A keyword with Quality Score 10 can pay up to 50% less than the same keyword with Quality Score 5 for the same ad position. For accounts spending significant budgets, improving Quality Score can save tens of thousands of pounds annually. See how average CPC varies by industry to understand where Quality Score savings have the biggest impact.

The Three Components of Quality Score

1. Expected Click-Through Rate (CTR)

This is Google's prediction of how likely your ad is to be clicked when shown for a search. It's based on historical performance of your keyword and ad combination, normalised for position.

2. Ad Relevance

How closely your ad matches the intent behind a user's search. Google analyses whether your ad text actually addresses what the searcher is looking for.

3. Landing Page Experience

How relevant and useful your landing page is to people who click your ad. This includes content relevance, page speed, mobile friendliness, and ease of navigation.

Diagnosing Quality Score Issues

Go to your Keywords tab and add the columns for Quality Score components: "Exp. CTR," "Ad Relevance," and "Landing Page Exp." Each will show either "Above Average," "Average," or "Below Average."

Focus your optimisation efforts on components rated "Below Average" first, as these offer the biggest improvement opportunity.

Improving Expected CTR

• Include the target keyword in your headline (ideally Headline 1)
• Write compelling ad copy that differentiates from competitors
• Use all available ad extensions to increase ad real estate
• Test multiple ad variations and pause underperformers
• Use countdown timers or location insertion for urgency and relevance

Improving Ad Relevance

• Create tightly themed ad groups with 10-20 closely related keywords
• Write ads that specifically address the keyword intent
• Use dynamic keyword insertion judiciously
• Don't mix informational and transactional keywords in the same ad group
• Create separate ad groups for different product/service variants

Improving Landing Page Experience

• Ensure landing page content matches ad promises
• Improve page load speed (aim for under 3 seconds)
• Make pages mobile-responsive and easy to navigate
• Include clear calls-to-action
• Add trust signals like reviews, certifications, and security badges
• Don't send all keywords to your homepage—use dedicated landing pages

Quality Score Myths Debunked

Myth: Pausing keywords resets Quality Score. Quality Score is calculated in real-time based on historical data. Pausing doesn't reset it.

Myth: Account-level Quality Score exists. Quality Score is calculated at the keyword level. There's no overall account score, though historical account performance can influence new keyword scores initially.

Myth: You need Quality Score 10 for success. Quality Score 7+ is generally considered good. Chasing 10s on every keyword isn't always worth the effort—focus on keywords that drive revenue.