Why an unmaintained WordPress site is losing you rankings on Google

Updating WordPress isn't a technical nicety — it's one of the most underrated SEO levers. Here's how neglected maintenance quietly costs you speed, security and rankings, and what to do about it.

WordPress powers a huge share of the world's websites, which makes it the favourite target for bots and automated attackers. But the real problem with skipping maintenance isn't just “getting hacked”: it's that Google quietly, gradually penalises sites that fall behind. An unmaintained WordPress site doesn't stop working overnight — it degrades, and your rankings degrade with it.

If you have a WordPress site someone built for you a few years ago and nobody has touched since, this post is for you. We explain how a lack of maintenance affects SEO, which signs show your site is already feeling it, and what maintaining it properly actually involves.

How maintenance affects SEO

The link between maintenance and SEO is more direct than it seems. Plugins that pile up unreviewed add weight and database queries that slow down every page load, and that's exactly what Google measures — Core Web Vitals — to decide how much it rewards or punishes you. If you want to understand that side properly, we explain it in why a slow website costs you customers.

An abandoned plugin that stops getting support can break an entire section of your site or generate hundreds of 404 error pages that Google crawls instead of your good content, burning your crawl budget on junk. The same goes for internal links pointing to deleted pages, forms that stop sending, or product pages left half-broken after a failed update.

Your PHP version matters too — the language WordPress runs on. When your host retires an old version, themes and plugins that haven't been updated can stop working overnight. And a site that throws errors or goes blank doesn't just lose visitors: Google crawls it, sees it failing and stops showing it with the same confidence.

The visible risk: malware and Google warnings

Then there's the more visible risk: a WordPress site with an outdated core, PHP version or plugins is the number one entry point for malware. And when Google detects injected content or your site lands on its Safe Browsing blacklist, it doesn't just tell you — it shows every visitor a “not secure” warning before letting them in. That single warning can tank your click-through rate and brand trust overnight, even if you fix the site within a day.

Some infections are less dramatic and arguably worse, because you can't see them. Spam pages in other languages created in a hidden folder, casino links slipped into the footer, redirects that only kick in when the visitor arrives on mobile or from Google. The owner opens their site, sees it looking normal and can't work out why titles they never wrote are showing up in the results. Cleaning that up and asking Google to review the site again takes time, and your rankings suffer throughout.

Why the drop goes unnoticed until it's too late

What makes this insidious is that the loss isn't obvious the way a server outage is. It's a drip: a conflicting plugin adds a second of load time here, an outdated theme breaks the mobile experience there, the database fills up with revisions and spam comments nobody clears out. By the time you actually check your organic traffic and see it's dropped, you've been losing ground for months — and rebuilding Google's trust always takes longer than maintaining it would have.

On top of that, for a business in Mallorca seasonality hides everything. If visits fall in November, it looks normal; if they don't pick up in April the way they did in other years, people blame the weather, the season or the competition. Rarely does anyone check whether the website has got worse under the bonnet. That's why it's worth always comparing with the same month last year rather than with last month.

Signs your WordPress site needs attention

You don't need to be technical to spot most of them. Log into the WordPress dashboard and look at how many updates are pending: if the plugin counter has been showing red for months, you have your answer. Other signs: plugins that haven't been updated in a long time, a premium theme whose developer no longer exists, warnings that your PHP version is out of date, or a backup nobody knows the location of or whether it can be restored.

Outside the dashboard, the clues are different: the site takes longer and longer to load, the contact form hasn't received a message in weeks, errors or non-indexed pages are rising in Search Console, or a customer mentions a strange warning when they visited. If you recognise two or three of these signs, it makes sense to review the site as soon as possible. A quick way to start is to run it through our free website audit, which gives you speed, SEO and basic security in a single report.

What maintaining a website properly means

Properly maintaining a website isn't turning on auto-updates and forgetting about it. It's testing changes before they hit production, backing up before every update, watching for downtime and malware continuously, cleaning the database regularly, checking for broken links, and keeping PHP and SSL certificates current. Sustained over time, that's what separates a site that keeps climbing on Google from one that stalls.

Automatic updates have their place, especially for minor security patches, but applied blindly to a site with lots of plugins they're a lottery: the day an update breaks something, nobody finds out until a customer calls. And a backup is only useful if it's stored off the same server and someone has checked it can actually be restored.

The server is part of maintenance too. Properly configured hosting, with current PHP versions, off-site backups and server-level caching, makes everything else easier and safer. Cheap, overloaded hosting, on the other hand, is often the root of many of the problems that then get blamed on WordPress.

What you can do yourself and what's worth handing over

Some tasks any business owner can take on: deleting plugins you don't use, keeping copy, opening hours and prices up to date, checking now and then that form submissions arrive, and taking a monthly look at Search Console. Doing just that already puts you ahead of a lot of websites.

What's worth handing over is anything that can break the site or requires knowing what you're looking at: updating the core and plugins with testing first, managing backups and restores, cleaning up an infection or switching PHP versions without taking everything down. Here the cost of getting it wrong is high, and someone who doesn't do it regularly takes much longer to find where the fault lies. If your WordPress site is already so out of date that every change is a risk, it may be time to ask whether to redesign your website or fix the one you have.

Página Viva: our maintenance plan

That's exactly what we do with Página Viva, our website maintenance plan: we handle updates, backups, security and speed — even if another agency built your WordPress site — so your rankings don't depend on someone remembering to click “update”.