Google Ads Quality Score: What It Actually Affects (And What Brands Get Wrong About It)

There is a number sitting inside your Google Ads account right now that is directly influencing how much you pay per click. Most brands glance at it occasionally without fully understanding what it controls or how to change it. Some brands have never looked at it.

Quality Score is the single most misunderstood lever in Google Search advertising. Getting it right does not require more budget. It requires understanding a three-part formula that Google has been running since the early days of AdWords and that most advertisers still optimise incompletely.

What Quality Score actually is

Quality Score is a 1-to-10 rating assigned to each keyword in your Google Ads account. It is Google's estimate of how relevant your ad and landing page are to someone searching for that keyword.

It is composed of three components. Expected clickthrough rate estimates how likely your ad is to get clicked when it appears for that keyword. Ad relevance measures how closely your ad copy matches the intent of the keyword. Landing page experience evaluates whether your landing page is relevant, easy to navigate, and directly related to what the ad promised.

Quality Score feeds directly into Ad Rank, which determines both your ad position and your actual cost per click. A higher Quality Score lowers your CPC for the same position. Two brands bidding the same amount on the same keyword will pay different prices and achieve different positions based on their Quality Scores.

The component most brands neglect

Expected CTR and ad relevance get most of the attention because they are directly editable through copy changes. Landing page experience gets far less attention and is often the biggest source of Quality Score problems.

An ad that promises "buy organic cotton bedsheets in Mumbai" and lands on a homepage with a full product catalogue is a landing page experience failure. The user who clicked expected specific content and got a generic store. Google measures this through post-click engagement data: if users bounce immediately, that is evidence of a poor landing page experience.

The Quality Score math in practice

Here is what the improvement looks like in real terms.

A keyword with Quality Score 4 and a max bid of Rs.40 might achieve Ad Rank 160 and cost Rs.38 per click. The same keyword with Quality Score 8 and the same Rs.40 bid achieves Ad Rank 320 and costs Rs.19 per click for a better ad position. The difference is entirely Quality Score and it costs nothing to improve except time and discipline.

At Rs.40,000 monthly spend on Search campaigns, moving average Quality Score from 4 to 7 can reduce effective CPC by 30% to 50%. That is Rs.12,000 to Rs.20,000 of recovered budget per month from the same spend.

Where to start if your scores are low

Pull the keyword-level Quality Score report in Google Ads. Sort by impressions to find the keywords that matter most. For any keyword sitting at 4 or below, look at the three component diagnostics.

If Expected CTR is below average, your ad copy is not compelling enough for that keyword. Rewrite ads to more directly address the specific intent of the query.

If Ad Relevance is below average, your ad copy is not closely enough matched to the keyword. Use the keyword phrase naturally in your headline and description.

If Landing Page Experience is below average, the page your ad points to is not delivering on what the ad promised. Build dedicated landing pages for high-volume keyword clusters rather than pointing all ads to your homepage.

This is not glamorous work. It is the unglamorous work that determines whether your Google Ads budget functions efficiently or leaks quietly every single day.

Quality Score is Google's way of charging you a tax for irrelevance. The brands that take it seriously simply pay less for the same traffic.

Sources & References

Google Ads Help: About Quality Score - https://support.google.com/google-ads/answer/6167118

WordStream: Quality Score Benchmark Report 2024 - https://www.wordstream.com/blog/ws/2017/11/09/google-ads-benchmarks

Search Engine Land: How Quality Score Affects CPC - https://searchengineland.com/google-quality-score-complete-guide-388337

Optmyzr: Quality Score Optimisation Framework for D2C - https://www.optmyzr.com/blog/quality-score-google-ads/