Consent Mode v2 Implementation

Since March 2024, Google has required all advertisers using Google Ads and GA4 to serve or target users in the European Union, European Economic Area, and UK to implement Google Consent Mode v2. This is not a recommendation — it is a policy requirement. Advertisers who do not implement Consent Mode v2 lose access to Google\'s audience features, remarketing lists, and conversion modelling for non-consenting users, significantly degrading campaign performance. Consent Mode v2 is Google\'s framework for adapting how GA4 and Google Ads tags behave based on users\' cookie consent choices. In Advanced mode (the recommended implementation), tags fire for all users but with reduced data collection for those who decline consent — allowing Google to use mathematical modelling to estimate the conversions and behaviour of non-consenting users based on patterns from consenting users. This modelling recovers a meaningful portion of the measurement data that would otherwise be completely lost when users decline cookies. For businesses operating across the EU/EEA, GDPR compliance for tracking technology is not optional. The EU\'s data protection authorities have issued significant fines for organisations using analytics and advertising cookies without proper consent, and the requirements go beyond simply displaying a cookie banner — the banner must offer genuine granular choice, consent must be freely given (not pre-ticked boxes), and tags must not fire before consent is obtained. At Adslytics, our Consent Mode v2 implementation service handles every aspect of this compliance challenge. We implement Consent Mode v2 in Advanced mode using Google Tag Manager, integrate correctly with your Consent Management Platform (Cookiebot, OneTrust, Usercentrics, Borlabs Cookie, or any other CMP), configure the correct default consent states for all five consent signal types, and validate the complete consent flow across all browsers and devices. We also ensure that Consent Mode v2 implementation is configured to preserve the maximum measurement capability for your campaigns — correctly enabling conversion modelling so that Google\'s estimated conversions from non-consenting users supplement your measured conversions in Smart Bidding.