by Quality Score is Google Ads’ 1-10 rating of how relevant your keywords, ads, and landing pages are compared to other advertisers competing for the same searches. It’s a diagnostic metric, not a bidding lever you set directly, but it has a real effect on what you pay per click and whether your ads show at all — which is exactly why a low score quietly costs money without ever showing up as a clear line item.
A lot of advertisers either ignore Quality Score entirely or misunderstand what it actually controls. Here’s what it is, how it affects cost, and what’s worth fixing.
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What is Google Ads Quality Score, exactly?
Quality Score is a rating from 1 to 10 assigned to each keyword in your account, built from three components: expected click-through rate, ad relevance, and landing page experience. Google uses it, alongside your bid, to help determine ad rank in the auction and to estimate what you’ll pay per click.
It’s visible in Google Ads at the keyword level, and each of the three components is also shown individually as “below average,” “average,” or “above average,” which is far more useful diagnostically than the single 1-10 number on its own.
How does Quality Score actually affect what you pay?
A higher Quality Score generally means a lower cost-per-click for the same ad position, because Google’s ad rank formula rewards relevance — two advertisers bidding the same amount can pay meaningfully different prices depending on how relevant their ads and landing pages are.
This is the part that costs money quietly: a low Quality Score doesn’t stop your ads from running, it just makes every click more expensive than it needs to be, and that gap compounds across thousands of clicks a month without ever appearing as its own line item in a report.
What actually drags Quality Score down?
Quality Score drops most often from loosely themed ad groups, ad copy that doesn’t closely match the keywords triggering it, and landing pages that are slow, irrelevant to the ad’s promise, or provide a poor mobile experience.
Loose ad group structure
Ad groups stuffed with dozens of only-loosely-related keywords make it hard to write ad copy that’s genuinely relevant to all of them, which drags down the ad relevance component for the group as a whole.
Ad and landing page mismatch
An ad promising a specific offer or product that lands on a generic homepage — instead of a page that matches that exact promise — hurts both ad relevance and landing page experience, since Google evaluates whether the destination actually delivers on what the ad said.
Slow or unstable landing pages
Landing page experience factors in page speed and mobile usability alongside content relevance, so a technically slow or hard-to-navigate page can drag Quality Score down even when the messaging itself is on point.
What’s the fastest way to improve a low Quality Score?
The fastest improvements usually come from tightening ad group themes around a small number of closely related keywords and rewriting ad copy to explicitly include those keywords and match searcher intent.
Restructuring an ad group from twenty loosely related keywords down to a handful of tightly related ones, with ad copy written specifically for that theme, is often more effective than any landing page overhaul, because it directly improves the relevance component Google can measure fastest.
Where to focus first
Start with your highest-spend keywords that show a below-average rating on any of the three components — that’s where a small improvement in relevance or landing page experience returns the most in lower cost-per-click, given the volume already flowing through those keywords.
Should you ever ignore Quality Score?
Quality Score is a diagnostic signal, not the goal itself — a keyword with a mediocre score that’s still hitting your target cost-per-acquisition doesn’t necessarily need fixing, while a “good” score on a keyword that isn’t converting doesn’t mean much either.
Use it to explain why costs are higher than expected on underperforming keywords, not as a scoreboard to optimize for its own sake. The actual business outcome — conversions at an acceptable cost — is what matters; Quality Score is one of the levers that affects how expensive it is to get there. Reviewing this kind of account-level detail is a core part of the ongoing management covered in semflux’s paid ads services.
Frequently Asked Questions
Can you set or directly control your Quality Score?
No — you can’t set it directly. You influence it indirectly by improving ad relevance, expected click-through rate, and landing page experience for each keyword.
Does a low Quality Score stop my ads from showing?
Not by itself. A very low score combined with a low bid can prevent an ad from clearing the auction threshold, but in most cases a low score simply raises the cost required to achieve the same ad position.
How often does Quality Score update?
Quality Score is recalculated regularly based on recent performance data, so it can shift after changes to ad copy, landing pages, or as click-through data accumulates — it isn’t a fixed, one-time rating.
Does Quality Score apply the same way to Performance Max campaigns?
Quality Score as a visible keyword-level metric applies to Search campaigns. Performance Max relies more heavily on automated signals and asset relevance rather than a keyword-level Quality Score you can inspect the same way.
Is a 10/10 Quality Score realistic to aim for?
It’s an achievable ceiling for very tightly themed, high-performing keywords, but it’s not a practical target for every keyword in an account — a consistently above-average score across your top-spend keywords is a more realistic and still meaningful goal.
