Why Enable Google Consent Mode v2 in AdOpt?
When you create a new Cookie Banner in AdOpt, you’ll see the option to enable Google Consent Mode v2 (GCM v2).
This guide addresses the most common questions we receive about this feature.
Why Enable Google Consent Mode v2?
Google Consent Mode v2 ensures your website continues to collect essential data and function securely, even when visitors decline cookies.
By enabling it, you avoid losing critical metrics, keep your Google Ads campaigns active, and remain compliant with both Google policies and global privacy regulations, such as the GDPR.
At AdOpt, we explain to our clients that by enabling Consent Mode v2, Google can model some of the lost conversions, improving the quality and accuracy of campaign performance data.
Additionally, with a well-optimized banner, your consent rate is likely to increase, helping to recover qualified reach, enhance audience lists, and reduce wasted ad spend.
Key Benefits of Enabling GCM v2:
Reliable metrics: Even when visitors reject cookies, Google uses aggregated data and statistical modeling to prevent gaps in reporting.
Compliance ensured: Meets Google’s requirements and aligns with global privacy laws such as GDPR, reducing legal risks and preventing blocked features.
Seamless integration: AdOpt automatically sends consent signals directly to Google services without the need for manual code changes.
Protects user experience: Respects user choices while maintaining secure, transparent browsing.
💡 Tip: In short: without GCM v2, you risk hurting campaign performance, losing visibility in reporting, and falling out of compliance with Google’s rules — which could limit your ads or even block key features.
Regulatory Context
Google Consent Mode v2 was introduced in response to new requirements under the Digital Markets Act (DMA), a European regulation designed to strengthen transparency and protect user privacy.
Starting March 6, 2024, all companies using Google tools — such as Google Ads or Analytics — with users in the European Union (EU) or European Economic Area (EEA) must comply with GCM v2.
Reference: Google Consent Mode v2 — Requirements
Global Impact and Beyond GDPR
Outside the EU and EEA — including regions such as North America, Latin America, and other global markets — there is currently no legal requirement equivalent to the DMA mandating GCM v2.
However, Google applies its global policies, which means:
Without GCM v2, features like remarketing, ad personalization, and conversion attribution may be limited or disabled, directly impacting campaign performance and reporting accuracy.
These impacts occur regardless of local laws — they are enforced by Google’s own platform rules, not regional privacy legislation.
💡 Tip: Enabling GCM v2 is a strategic best practice, ensuring your campaigns remain active, your reporting stays accurate, and your business is prepared for future privacy regulations that may emerge globally.
Who Is Affected
GCM v2 impacts any company that:
Runs paid ads through Google Ads or connected networks.
Uses Google Analytics 4 (GA4) to collect metrics and track performance.
Has website visitors or customers located in the EU, EEA, or Switzerland.
Even if your business operates outside these regions, if there is traffic coming from these locations, GCM v2 must be implemented to keep campaigns compliant and fully functional.
Additionally, in other global markets, while there may not be a local legal requirement, failing to enable GCM v2 can still limit Google’s advertising features, reducing both campaign efficiency and data quality.
💡 Tip: Activating GCM v2 improves campaign performance and prepares your company for future changes in privacy regulations worldwide.
What is Google Consent Mode v2
Google Consent Mode v2 is a framework that connects your CMP (Consent Management Platform) — in this case, AdOpt — with Google services like Google Ads, Google Analytics 4 (GA4), Floodlight, Campaign Manager 360, and Google Tag Manager.
It allows these services to automatically adjust data collection based on the user’s consent status, ensuring that essential features and campaign tracking continue to work properly.
GCM v2 introduces two new key consent signals for greater control over how data is used and shared:
"ad_user_data" — Manages consent for collecting and sharing user data with Google.
"ad_personalization" — Controls whether personalized advertising features are enabled.
💡 Tip: GCM v2 does not replace your Cookie Banner — it works alongside it. AdOpt securely communicates user consent decisions directly to Google services, ensuring compliance and seamless operation.
Reference: Google Ads Help — About Consent Mode
Consequences of Not Enabling GCM v2
Failing to enable GCM v2 can lead to significant risks, including:
Loss of reporting visibility, making it harder to analyze performance, conversions, and ROI.
Blocked or restricted Google Ads features, such as remarketing and ad personalization.
Non-compliance with privacy laws, such as GDPR and DMA, which may lead to penalties in regulated markets.
Interrupted or limited data collection for visitors in the EU, EEA, and Switzerland — even if your business is located elsewhere.
Without GCM v2, your campaigns may underperform, your data may become incomplete or inaccurate, and vital Google features — like remarketing and conversion tracking — may be limited or disabled.
To be fully transparent: Google, as one of the largest global players, is implementing a new technical and regulatory model that impacts both how its services operate and how all CMPs must integrate with them.
This change has a major impact on the privacy and marketing ecosystem, establishing new technical and governance standards to ensure that businesses and intermediaries can continue operating securely and in compliance.
AdOpt follows the technical specifications set by Google, ensuring our clients can use these services with compatibility, security, and high performance, while minimizing the risk of disruptions.
The Message Displayed in Your Cookie Banner
For GCM v2 to function correctly, it must be enabled inside the AdOpt platform.
How can you confirm it’s been enabled successfully?
A clear sign is the automatic display of a required message in your Cookie Banner.
When GCM v2 is enabled via AdOpt, this message appears automatically to meet both Google’s requirements and global privacy regulations.
Displayed message:
"We use cookies to share analytics, advertising data, user data, and ad personalization data with Google."
Why This Message Matters
Legal Transparency (GDPR and Global Privacy Laws)
Clearly informs visitors that, even without consent, some data may be processed in a limited or anonymized way.
This data is essential for maintaining core website functionality and supporting conversion modeling, as required under regulations like the GDPR.
Compliance with Google Policies
Ensures your Cookie Banner aligns with the Google EU User Consent Policy.
This policy requires businesses to clearly disclose how user data is used and with whom it is shared, meeting Google’s standards for ad serving and reporting.
Reference: Google EU User Consent Policy
How to Enable GCM v2 in AdOpt
Option 1 – From a specific Disclaimer:
Go to the AdOpt Platform and edit the Disclaimer you want to update.
In the Google Consent Mode v2 section, select Automatic Configuration.
Save and publish your changes.
Option 2 – From the general Disclaimer Configuration section:
Access the AdOpt Platform and navigate directly to the Disclaimer Configuration section.
Enable the Google Consent Mode v2 option.
Save and publish your changes.
Done! Once enabled, AdOpt will automatically send consent signals to Google services and display the required message in your Cookie Banner, ensuring transparency and compliance.
For more information, visit Google’s official documentation:
Final Note
Enabling GCM v2 is essential to preserve data accuracy, protect campaign performance, and stay compliant with both Google policies and global privacy regulations.
It ensures that your business is ready for today’s challenges — and prepared for the privacy demands of tomorrow.