Stronger Google Ads Start With Competitor Research

If you want stronger Google Ads, the fastest wins rarely come from another round of bid tweaks. They come from understanding who you’re actually up against in the auction, what they’re offering, and where they’ve left a gap you can drive through. Competitor research turns guesswork into a plan – cheaper clicks, sharper messaging and budget pointed at the auctions you can genuinely win.

Here’s the process we use, from the free tools everyone has access to through to the paid ones worth paying for.

Step 1: Identify Your Real Competitors Using Auction Insights

Before you go searching the web for brand names you think you’re competing with, take a look at Google’s own data.

In your Google Ads account, head to the Auction Insights report. This tells you exactly which advertisers are appearing alongside you in the same auctions – based on impression share, overlap rate, and other useful metrics.

The trick is knowing what each column is actually telling you:

• Impression share – the impressions you got divided by the impressions you were eligible for. A low number means you’re leaving auctions on the table, usually to budget or bids.
• Overlap rate – how often a rival’s ad showed when yours did. A rival at 60% is in more than half of your auctions; they’re a direct competitor, not a background name.
• Outranking share – how often you ranked above them (or showed when they didn’t). Below 50% means they’re usually beating you to the click.
• Position above rate – how often their ad sat higher than yours when you both showed.
• Top of page rate and absolute top of page rate – how often you land above the organic results, and how often you’re the very first ad.

Read the columns together, not in isolation. A competitor whose overlap rate is climbing month on month and who holds a high outranking share is quietly taking share from you – the signal to raise bids or budget on those campaigns, or tighten your targeting so you’re only competing where you can win. A rival with high overlap but low outranking share is one you’re already beating; don’t overspend to fight a battle you’ve won.

This is your real competitive set – not just the brands you think you’re competing with.

Step 2: See Their Actual Ads in Google’s Ads Transparency Center

Now that you know who’s showing up, it’s time to see how they’re showing up.

Head to the Google Ads Transparency Center – it’s a free tool that lets you search for any advertiser and view the ads they’re currently running across search, display, video and app formats. You can filter by date and region, so you’re seeing what’s live right now, not a campaign from two years ago.

What to steal: the substance. Look at the offer (free delivery, price match, no-contract, next-day install), the core USP they lead with, and the landing-page angle each ad points to. If three of your competitors all hammer the same promise, that promise has become table stakes – you either match it or, better, out-position it.

What to ignore: the vanity. Don’t copy a slick headline just because it reads well, and don’t assume a big brand’s creative is right for your budget or audience. Tone and wording are easy to imitate and rarely the reason an ad wins. Chase the strategy behind the ad, not the polish on top of it.

Competitor research tools

You can get a long way on free tools alone. Paid platforms add historical depth and keyword data you can’t see from inside your own account. Here’s how the main options compare.

Tool	What it reveals	Cost	Best for
Auction Insights	Who shares your auctions, plus impression share, overlap, outranking, position above and top-of-page rates	Free (inside Google Ads)	Finding your true competitive set and where you’re losing share
Google Ads Transparency Center	Every ad an advertiser is currently running across search, display, video and app	Free	Seeing live offers, USPs and creative angles
SpyFu	Competitors’ historical ad copy, the keywords they bid on and how long ads have run	From ~$39/month (SpyFu’s USD pricing)	Affordable keyword and ad-history digging
SEMrush	Paid and organic keywords, ad copy, estimated spend and keyword-gap analysis	From ~$139.95/month (Semrush’s USD pricing)	Deeper, all-in-one competitor and keyword intelligence

Prices move, so check each tool’s current pricing page before you commit. Both SpyFu and SEMrush price in US dollars and offer cheaper effective rates on annual billing.

Step 3: Use Paid Tools to Find the Keyword Gaps

If you want to go beyond surface-level research, tools like SpyFu or SEMrush give you a deeper view of your competitors’ ad history – which keywords they target, how long specific ads have run, and how their copy has changed over time.

One quiet signal to watch: ads that have been live for six months or more are usually earning their keep. If a business keeps consistent spend behind a message, there’s normally a reason.

The bigger prize is the keyword gap. Run a competitor’s domain through SpyFu or SEMrush and you’ll see terms they bid on that you don’t. Don’t chase all of them. Prioritise by intent – a “buy”, “quote” or “near me” style query converts far harder than a broad research term – and sense-check the estimated cost per click so you’re not walking into an auction you can’t afford. A short list of high-intent, sensibly priced gaps is worth more than a spreadsheet of 500 keywords you’ll never action.

If you want to pressure-test your own account before you widen your keyword list, our Google Ads audit guide walks through what to check first.

Step 4: Turn Insight Into Better Ads

Once you’ve gathered this intel, you’re no longer guessing. You know who your true competitors are, how they show up, what offers they lean on, and where there’s room to be different.

Make it concrete. Say your research shows every rival leads with the same line:

Before (everyone’s ad): “Free Delivery on All Orders – Shop Now”

If free delivery is universal, it’s no longer a differentiator – it’s the price of entry. So you counter-position. Match the table-stakes offer in the description, then lead the headline with something they aren’t saying:

After (your ad): Headline: “Free Delivery + Next-Day Dispatch” / “Rated 4.9 by 2,000+ UK Customers” Description: “Free delivery on every order, dispatched same day if you order by 3pm. Trusted by thousands of UK buyers.”

Same category, different hook. You’ve neutralised their advantage and stacked a reason to choose you on top. Feed those angles into your responsive search ad headlines, test them against your current copy, and let the data confirm the winner. If you’re building a fresh campaign off the back of this, run it past our Google Ads pre-launch checklist first.

How Often Should You Re-run Competitor Research?

Competitor research isn’t a one-off. Auctions shift as rivals change budgets, launch offers and enter or leave the market. For most accounts, a proper review every quarter is enough, with a quick monthly glance at Auction Insights to catch anyone climbing fast.

One refinement worth knowing: Auction Insights can be viewed at campaign, ad group and keyword level. The account-wide view tells you who’s around in general; the ad-group and keyword views tell you exactly who’s beating you on a specific term. When a key product line starts losing share, drop to keyword-level insights – that’s where the sharpest, most actionable reads live.

FAQ

Is competitor research against Google Ads policy?

No. Viewing Auction Insights, using the Google Ads Transparency Center and running third-party tools are all legitimate. What you can’t do is impersonate a rival, use their trademarks in your ad text without permission, or misuse any data you gather. Researching the market and copying a brand are two different things.

Do I need paid tools like SpyFu or SEMrush?

Not to start. Auction Insights and the Google Ads Transparency Center are free and cover most of what a small or mid-sized advertiser needs. Paid tools earn their place when you want historical ad data, estimated spend or a proper keyword-gap analysis across several competitors at once.

How accurate is Auction Insights?

It’s Google’s own auction data, so the competitive picture is reliable. It won’t show you a rival’s exact bids, budgets or conversion rates – it shows relative visibility (impression share, overlap, outranking share and so on), which is what you need to decide where to push and where to hold.

What’s the difference between overlap rate and outranking share?

Overlap rate is how often you and a competitor appear in the same auction. Outranking share is how often you beat them when you do. High overlap plus low outranking share means a rival you meet constantly and usually lose to – a clear priority to address.

How quickly will competitor research improve my results?

Messaging and positioning changes can show up within a couple of weeks of testing, once ads gather enough impressions. Bid and budget shifts based on Auction Insights tend to take a full billing cycle to read cleanly. Treat it as an ongoing habit rather than a one-time fix.