diff --git a/modules/a4gBidAdapter.js b/modules/a4gBidAdapter.js
index f961db718c7..d6c0fa0b303 100644
--- a/modules/a4gBidAdapter.js
+++ b/modules/a4gBidAdapter.js
@@ -22,7 +22,7 @@ export const spec = {
     return bid.params && !!bid.params.zoneId;
   },
 
-  buildRequests: function(validBidRequests) {
+  buildRequests: function(validBidRequests, bidderRequest) {
     let deliveryUrl = '';
     const idParams = [];
     const sizeParams = [];
@@ -41,16 +41,25 @@ export const spec = {
       deliveryUrl = A4G_DEFAULT_BID_URL;
     }
 
+    let data = {
+      [IFRAME_PARAM_NAME]: 0,
+      [LOCATION_PARAM_NAME]: utils.getTopWindowUrl(),
+      [SIZE_PARAM_NAME]: sizeParams.join(ARRAY_PARAM_SEPARATOR),
+      [ID_PARAM_NAME]: idParams.join(ARRAY_PARAM_SEPARATOR),
+      [ZONE_ID_PARAM_NAME]: zoneIds.join(ARRAY_PARAM_SEPARATOR)
+    };
+
+    if (bidderRequest && bidderRequest.gdprConsent) {
+      data.gdpr = {
+        applies: bidderRequest.gdprConsent.gdprApplies,
+        consent: bidderRequest.gdprConsent.consentString
+      };
+    }
+
     return {
       method: 'GET',
       url: deliveryUrl,
-      data: {
-        [IFRAME_PARAM_NAME]: 0,
-        [LOCATION_PARAM_NAME]: utils.getTopWindowUrl(),
-        [SIZE_PARAM_NAME]: sizeParams.join(ARRAY_PARAM_SEPARATOR),
-        [ID_PARAM_NAME]: idParams.join(ARRAY_PARAM_SEPARATOR),
-        [ZONE_ID_PARAM_NAME]: zoneIds.join(ARRAY_PARAM_SEPARATOR)
-      }
+      data: data
     };
   },
 
diff --git a/test/spec/modules/a4gBidAdapter_spec.js b/test/spec/modules/a4gBidAdapter_spec.js
index 30fcb2f8497..84346a1149f 100644
--- a/test/spec/modules/a4gBidAdapter_spec.js
+++ b/test/spec/modules/a4gBidAdapter_spec.js
@@ -77,6 +77,26 @@ describe('a4gAdapterTests', () => {
       const request = spec.buildRequests(bidRequests);
       expect(request.data.zoneId).to.equal('59304;59354');
     });
+
+    it('bidRequest gdpr consent', () => {
+      const consentString = 'consentString';
+      const bidderRequest = {
+        bidderCode: 'a4g',
+        auctionId: '18fd8b8b0bd757',
+        bidderRequestId: '418b37f85e772c',
+        timeout: 3000,
+        gdprConsent: {
+          consentString: consentString,
+          gdprApplies: true
+        }
+      };
+
+      const request = spec.buildRequests(bidRequests, bidderRequest);
+
+      expect(request.data.gdpr).to.exist;
+      expect(request.data.gdpr.applies).to.exist.and.to.be.true;
+      expect(request.data.gdpr.consent).to.exist.and.to.equal(consentString);
+    });
   });
 
   describe('interpretResponse', () => {