Smart Bidding in Google Ads Does Not Work

Smart bidding in Google Ads doesn’t work is a bold statement. Yet I hear it all the time in my Google Ads coaching business.

If you’re find yourself in this place then this is the post for you.

Here Is Exactly How This Situation Plays Out

You’ve read the documentation coming from Google Ads.

You’ve listened to the reps even when everyone is telling you to ignore the Google Ads reps.

Maybe you even got Google Ads Certified.

Yet, you still go back to the fact that the message from Google Ads has been consistent for years:

Give us the data, set your goals (targets), and let our Smart Bidding algorithm handle the rest.

And for a long time, you tried to believe it and used smart bidding.

You trusted that Google Ads wouldn’t lead you down the wrong path but here you are reading my post and you may have even read many other posts before landing on mine.

And lately you look at your performance in Google Ads and your stomach drops. So, you think something is wrong but it is hard to say what.

You just know something is off.

If feel like you are flying a plane while Google’s autopilot is still in training and it seems to be consuming your money at a terrifying rate then let’s stop gaslighting ourselves.

The Google Ads Bidding Algo Isn’t Working

The Google Ads bidding algorithm is structurally breaking down because your business is too complex for a machine's narrow vision. It is that simple and you don’t need another validation.

Here is what is probably happening to your ads account and why the fix requires a human touch, not more machine learning or more reading.

The Three Traps of "Smart" Bidding

Now, I love ads running on Smart Bidding.

For most of my clients this is the solution and Smart Bidding is genuinely powerful under perfect conditions (like having over 50 clean conversions a month on identical, high-volume products).

But a meaningful share of businesses don’t fit that profile.

If you run a B2B company, sell complex services, or have tight budget constraints, you are likely trapped in one of three failure modes and you have to be able to see these constraints for what they are:

  • The Low-Volume Ghost Town: If you get fewer than 50 conversions a month, the algorithm has nothing to learn from, the data isn’t there. Instead, Google Ads starts aggressively chasing low-intent, junk traffic just to feed itself, burning through your ad budget on clicks that will never buy. I am currently working with a b-to-b machine company that falls into this category. They just don’t have the volume they need.

  • The Blind Spot Mix: Google optimizes for the conversion event, not your actual business health. Google Ads can't see customer lifetime value, product margins, or deal sizes. It doesn’t know that a $15,000 project-scale client is worth a hundred low-value clicks. It just blindly chases the cheapest form fill.

  • The Infinity Spend Risk: Without hard, predictable guardrails, Smart Bidding can react unpredictably, causing sudden spikes in cost-per-click (CPC) that can blow up an ads account or a small business budget before you even log in for the day.

The Hybrid Way Forward: Control Without Sacrifice

The answer to smart bidding not working is a hybrid approach to Google Ads:

You define the business logic; and you pull in custom automation that executes it.

I teach clients to build a system where THEY dictate the hard ceilings, which is the exact worth of a click based on real profit margins, and the specific rules for scaling up or cutting back when running ads.

I don’t think that you have to give up your control just to get the speed and benefits of automation.

If you are tired of guessing why the ads account is behaving differently every week, then the key is to build an advertising system that values your human judgment and what you know about your own business over a bidding algorithm's guesswork.

Then and only then will you get out of the trap of smart bidding not working.

Sarah Stemen

Bio written by Sarah Stemen

Sarah Stemen is your leading resource for PPC help and AI-powered campaign optimization. As the President of the Paid Search Association (PSA) and a globally recognized Top 100 PPC Strategist, she leverages her 17 years of Google Ads experience to deliver enterprise-level strategy and audits that generate 30%+ ROI improvements. A trusted contributor to Search Engine Land and Search Engine Journal, Sarah's insights are frequently shared on industry podcasts, YouTube, and Reddit. Find her data-driven strategy at thesarahstemen.com.

https://www.thesarahstemen.com
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