Your Quality Score is low because Google thinks your ad, your keyword and your landing page don't agree with each other. Someone searches for one thing, your ad promises a slightly different thing, and the page they land on talks about something else again. Google scores that gap, and the score is its guess at how likely you are to give the searcher what they asked for.
It does matter, but less than the number suggests. A low score tends to raise what you pay per click and can push your ad lower on the page, so you pay more for less. It's also a symptom. Treat it as a pointer to the mismatch underneath, not as a grade to push up for its own sake.
What Google is actually scoring
Quality Score (Google's rating of how relevant and useful your ads and pages are for a given keyword) is built from three parts. Google reports each one separately, so you can see where the weakness is.
- Expected click-through rate: how likely people are to click your ad for that keyword, judged against others competing for it.
- Ad relevance: how closely the ad's wording matches what the person searched.
- Landing page experience: whether the page they reach is useful, easy to use, and about what the ad said.
Each one comes back as below average, average or above average. The overall score is shown per keyword, which means one account can hold keywords Google likes and keywords it doesn't, side by side.
Why the page drags it down faster than the ad
Most owners go straight to the ad copy, because it's the part they can see and edit in a minute. The page is usually the bigger problem.
Think of someone who searches for a specific service near them and clicks an ad that says exactly that. If they land on a homepage with a long list of other services, a slow-loading banner and no obvious next step, they leave. Google sees that pattern across many clicks and marks the page down. Better ad copy can't fix a page that answers a different question than the one the ad raised.
That's the reason landing pages built around one offer tend to score better than a general website. If you're not sure which one your ads should point at, we've covered whether ads can go to your regular site. A page that loads slowly on a phone hurts for the same reason: people leave before they see it, and you still paid for the click.
When it's worth fixing
Fix it when a keyword you care about is flagged below average on one of the three parts and that keyword is spending real money. That's where a mismatch costs you most. Start with the part Google marked down, not the one you'd like to work on.
- If expected click-through rate is weak, the ad isn't earning attention. Rewrite it around what that searcher wants, and check you aren't showing it on searches that are only loosely related.
- If ad relevance is weak, the keyword and the ad are talking about different things. Group tightly related keywords together and write the ad for that group.
- If landing page experience is weak, look at the page. Does it match the ad, load fast on a phone, and make the next step obvious?
When you can ignore it
Don't chase the score on keywords that barely spend. A low score on a term that sends you a handful of clicks tells you nothing worth acting on.
Also don't judge the account on the score alone. A high score on a keyword that never produces a real lead is a polite way of saying Google likes your ad. It doesn't say the clicks are worth buying. Whether a keyword earns its place depends on what happens after the click, which is why conversion tracking has to be right before you trust any score.
Where to start
Open your keyword list, add the Quality Score columns, and sort by spend. Look at the top few keywords only. For each one, read the ad, then open the page it points to as if you'd just searched that term on your phone. If the three don't clearly belong together, you've found the problem.
If you'd like a second pair of eyes, an account audit goes through exactly this, keyword by keyword, and our Google Ads work is built around keeping the search, the ad and the page telling the same story.