After hundreds of Google Ads audits, the same mistakes appear over and over. Any single one can quietly burn 20–30% of a budget; combined, they explain most 'Google Ads doesn't work for us' complaints. Here are the 15 to fix first.
1. Broken or duplicated conversion tracking
Multiple conversion pixels, GA4 events double-counted in Google Ads, form-focus events counted as conversions. Smart Bidding then optimizes toward noise. Audit tracking first, always.
2. No negative keyword lists
Every search term you don't want should be excluded. Missing negative keyword lists is the highest-frequency mistake in the industry — and one of the fastest to fix.
3. Broad match without Smart Bidding
Broad match with manual CPC or with thin conversion data is a budget shredder. Either pair it with tCPA/tROAS and rich conversion volume, or don't use it.
4. Performance Max with no guardrails
No brand exclusions, no account negatives, weak audience signals, thin creative. Performance Max then eats branded traffic and low-quality placements.
5. Homepage as the landing page
Homepages are for many audiences with many goals. Dedicated landing pages typically convert 2–3x better.
6. Radius targeting instead of ZIP/city
A 25-mile ring around your office wastes spend on areas you don't want to service. Target specific ZIP codes or cities and exclude the ones with bad job quality.
7. No branded search protection
Competitors bid on your brand. Not owning your own branded search costs cheap, high-CVR clicks — and hands them to competitors.
8. Reporting on clicks and impressions
If your monthly report doesn't tie back to leads, appointments or revenue, you're managing to the wrong number. Every campaign needs a primary business KPI.
9. Bid strategy changes too often
Every bid strategy change resets learning. Pick a strategy, feed it clean conversion data, and give it 2–3 weeks before judging.
10. Ignoring mobile experience
70%+ of clicks in most verticals are mobile. Slow load times, unreadable forms and hidden phone numbers on mobile are silent budget killers.
11. Weak or missing ad extensions
Sitelinks, callouts, structured snippets, images, call assets, location assets — all free real estate. Missing extensions cost CTR, quality score and cheaper CPC.
12. One giant campaign for everything
Combined services, geographies and audiences in one campaign make Smart Bidding average across noise. Split campaigns by service line and margin.
13. No call tracking
For any service business, 50–70% of conversions come as calls. Without call tracking, you can't tell which keywords produced real leads vs. junk calls.
14. Not importing offline conversions
Optimizing toward form fills instead of closed deals slowly degrades lead quality. Offline conversion imports keep Smart Bidding focused on the outcomes that actually matter.
15. Set-and-forget
Google Ads is a weekly discipline. Accounts that get checked once a month regress — search intent shifts, competition changes, Smart Bidding drifts. Consistent weekly optimization is the difference between a leaky account and a scaling one.
How many of these are in your account?
We run this exact checklist in every free strategy call — you'll leave with a prioritized list of the ones costing you the most, whether you hire us or not.
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Learn more about how NexGrowthPPC delivers results — see our Google Ads and PPC services, read what clients say about our work, or learn more about our team.
Frequently asked questions
What is the most common Google Ads mistake?
Broken or misconfigured conversion tracking, on almost every account we audit. Everything downstream — bidding, reporting, optimization — is only as good as the conversion signal.
How much do these mistakes cost?
Combined, most accounts leak 20–40% of their monthly spend on preventable mistakes. A structured audit and 90 days of fixes usually pays for itself several times over.
Should I pause broad match keywords?
Only if you don't have Smart Bidding and clean conversion data. With both, broad match can outperform — the mistake is running it without those prerequisites.
Is Performance Max worth it?
Yes when set up correctly — with brand exclusions, clean tracking, strong creative and audience signals. Without those, it's the single fastest way to overspend in modern Google Ads.
How often should I check my Google Ads account?
Weekly at minimum — search terms, negatives, budget pacing, bid strategy performance. Monthly-only reviews are one of the biggest silent killers of account performance.
Book a free Google Ads audit with NexGrowthPPC
We'll review your account against the checklist in this article and show you the fastest CPL wins — no obligation, no cost.
