diff --git a/releasenotes/notes/volume-service-testing-default-to-v3-endpoints-20b86895a590925d.yaml b/releasenotes/notes/volume-service-testing-default-to-v3-endpoints-20b86895a590925d.yaml
new file mode 100644
index 0000000..ea69293
--- /dev/null
+++ b/releasenotes/notes/volume-service-testing-default-to-v3-endpoints-20b86895a590925d.yaml
@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    The volume config option ``catalog_type`` default is changed to
+    ``volumev3`` which is v3 API endpoint configured in devstack.
+    With this change Tempest will be testing v3 API as default.
+    User who want to test v2 API can still test by configuring the
+    ``catalog_type`` to v2 endpoint.
diff --git a/tempest/config.py b/tempest/config.py
index 008c9f6..1fb5c8e 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -752,7 +752,7 @@
                help='Timeout in seconds to wait for a volume to become '
                     'available.'),
     cfg.StrOpt('catalog_type',
-               default='volume',
+               default='volumev3',
                help="Catalog type of the Volume Service"),
     cfg.StrOpt('region',
                default='',
diff --git a/tempest/lib/services/volume/v2/availability_zone_client.py b/tempest/lib/services/volume/v2/availability_zone_client.py
index bb4a357..147e4c6 100644
--- a/tempest/lib/services/volume/v2/availability_zone_client.py
+++ b/tempest/lib/services/volume/v2/availability_zone_client.py
@@ -19,7 +19,6 @@
 
 
 class AvailabilityZoneClient(rest_client.RestClient):
-    api_version = "v2"
 
     def list_availability_zones(self):
         resp, body = self.get('os-availability-zone')
diff --git a/tempest/lib/services/volume/v2/backups_client.py b/tempest/lib/services/volume/v2/backups_client.py
index adfa6a6..3dbb30c 100644
--- a/tempest/lib/services/volume/v2/backups_client.py
+++ b/tempest/lib/services/volume/v2/backups_client.py
@@ -22,8 +22,7 @@
 
 
 class BackupsClient(base_client.BaseClient):
-    """Volume V2 Backups client"""
-    api_version = "v2"
+    """Volume Backups client"""
 
     def create_backup(self, **kwargs):
         """Creates a backup of volume.
diff --git a/tempest/lib/services/volume/v2/capabilities_client.py b/tempest/lib/services/volume/v2/capabilities_client.py
index 240be13..7ebcd69 100644
--- a/tempest/lib/services/volume/v2/capabilities_client.py
+++ b/tempest/lib/services/volume/v2/capabilities_client.py
@@ -19,7 +19,6 @@
 
 
 class CapabilitiesClient(rest_client.RestClient):
-    api_version = "v2"
 
     def show_backend_capabilities(self, host):
         """Shows capabilities for a storage back end.
diff --git a/tempest/lib/services/volume/v2/encryption_types_client.py b/tempest/lib/services/volume/v2/encryption_types_client.py
index b99d1fe..5a7ea12 100644
--- a/tempest/lib/services/volume/v2/encryption_types_client.py
+++ b/tempest/lib/services/volume/v2/encryption_types_client.py
@@ -20,7 +20,6 @@
 
 
 class EncryptionTypesClient(rest_client.RestClient):
-    api_version = "v2"
 
     def is_resource_deleted(self, id):
         try:
diff --git a/tempest/lib/services/volume/v2/extensions_client.py b/tempest/lib/services/volume/v2/extensions_client.py
index 09279d5..45b7a56 100644
--- a/tempest/lib/services/volume/v2/extensions_client.py
+++ b/tempest/lib/services/volume/v2/extensions_client.py
@@ -19,8 +19,7 @@
 
 
 class ExtensionsClient(rest_client.RestClient):
-    """Volume V2 extensions client."""
-    api_version = "v2"
+    """Volume extensions client."""
 
     def list_extensions(self):
         url = 'extensions'
diff --git a/tempest/lib/services/volume/v2/hosts_client.py b/tempest/lib/services/volume/v2/hosts_client.py
index f44bda3..c395325 100644
--- a/tempest/lib/services/volume/v2/hosts_client.py
+++ b/tempest/lib/services/volume/v2/hosts_client.py
@@ -20,8 +20,7 @@
 
 
 class HostsClient(rest_client.RestClient):
-    """Client class to send CRUD Volume V2 API requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume API requests"""
 
     def list_hosts(self, **params):
         """Lists all hosts.
diff --git a/tempest/lib/services/volume/v2/limits_client.py b/tempest/lib/services/volume/v2/limits_client.py
index ce9fba9..9500254 100644
--- a/tempest/lib/services/volume/v2/limits_client.py
+++ b/tempest/lib/services/volume/v2/limits_client.py
@@ -19,9 +19,7 @@
 
 
 class LimitsClient(rest_client.RestClient):
-    """Volume V2 limits client."""
-
-    api_version = "v2"
+    """Volume limits client."""
 
     def show_limits(self):
         """Returns the details of a volume absolute limits."""
diff --git a/tempest/lib/services/volume/v2/qos_client.py b/tempest/lib/services/volume/v2/qos_client.py
index 47d3914..f8b8c3c 100644
--- a/tempest/lib/services/volume/v2/qos_client.py
+++ b/tempest/lib/services/volume/v2/qos_client.py
@@ -19,13 +19,11 @@
 
 
 class QosSpecsClient(rest_client.RestClient):
-    """Volume V2 QoS client.
+    """Volume QoS client.
 
        Client class to send CRUD QoS API requests
     """
 
-    api_version = "v2"
-
     def is_resource_deleted(self, qos_id):
         try:
             self.show_qos(qos_id)
diff --git a/tempest/lib/services/volume/v2/quota_classes_client.py b/tempest/lib/services/volume/v2/quota_classes_client.py
index 733b1ac..eeeb268 100644
--- a/tempest/lib/services/volume/v2/quota_classes_client.py
+++ b/tempest/lib/services/volume/v2/quota_classes_client.py
@@ -19,9 +19,7 @@
 
 
 class QuotaClassesClient(rest_client.RestClient):
-    """Volume quota class V2 client."""
-
-    api_version = "v2"
+    """Volume quota class client."""
 
     def show_quota_class_set(self, quota_class_id):
         """List quotas for a quota class.
diff --git a/tempest/lib/services/volume/v2/quotas_client.py b/tempest/lib/services/volume/v2/quotas_client.py
index e4b2895..8906294 100644
--- a/tempest/lib/services/volume/v2/quotas_client.py
+++ b/tempest/lib/services/volume/v2/quotas_client.py
@@ -20,8 +20,7 @@
 
 
 class QuotasClient(rest_client.RestClient):
-    """Client class to send CRUD Volume Quotas API V2 requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume Quotas API requests"""
 
     def show_default_quota_set(self, tenant_id):
         """List the default volume quota set for a tenant."""
diff --git a/tempest/lib/services/volume/v2/scheduler_stats_client.py b/tempest/lib/services/volume/v2/scheduler_stats_client.py
index 0d04f85..bd5fa6d 100644
--- a/tempest/lib/services/volume/v2/scheduler_stats_client.py
+++ b/tempest/lib/services/volume/v2/scheduler_stats_client.py
@@ -19,7 +19,6 @@
 
 
 class SchedulerStatsClient(rest_client.RestClient):
-    api_version = "v2"
 
     def list_pools(self, detail=False):
         """List all the volumes pools (hosts).
diff --git a/tempest/lib/services/volume/v2/services_client.py b/tempest/lib/services/volume/v2/services_client.py
index bc55469..09036a4 100644
--- a/tempest/lib/services/volume/v2/services_client.py
+++ b/tempest/lib/services/volume/v2/services_client.py
@@ -20,8 +20,7 @@
 
 
 class ServicesClient(rest_client.RestClient):
-    """Client class to send CRUD Volume V2 API requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume API requests"""
 
     def list_services(self, **params):
         url = 'os-services'
diff --git a/tempest/lib/services/volume/v2/snapshot_manage_client.py b/tempest/lib/services/volume/v2/snapshot_manage_client.py
index aecd30b..43fd328 100644
--- a/tempest/lib/services/volume/v2/snapshot_manage_client.py
+++ b/tempest/lib/services/volume/v2/snapshot_manage_client.py
@@ -19,9 +19,7 @@
 
 
 class SnapshotManageClient(rest_client.RestClient):
-    """Snapshot manage V2 client."""
-
-    api_version = "v2"
+    """Snapshot manage client."""
 
     def manage_snapshot(self, **kwargs):
         """Manage a snapshot."""
diff --git a/tempest/lib/services/volume/v2/snapshots_client.py b/tempest/lib/services/volume/v2/snapshots_client.py
index 4bc2842..1f05180 100644
--- a/tempest/lib/services/volume/v2/snapshots_client.py
+++ b/tempest/lib/services/volume/v2/snapshots_client.py
@@ -18,8 +18,7 @@
 
 
 class SnapshotsClient(rest_client.RestClient):
-    """Client class to send CRUD Volume V2 API requests."""
-    api_version = "v2"
+    """Client class to send CRUD Volume API requests."""
     create_resp = 202
 
     def list_snapshots(self, detail=False, **params):
diff --git a/tempest/lib/services/volume/v2/transfers_client.py b/tempest/lib/services/volume/v2/transfers_client.py
index 2dfbe7b..291aadf 100644
--- a/tempest/lib/services/volume/v2/transfers_client.py
+++ b/tempest/lib/services/volume/v2/transfers_client.py
@@ -20,8 +20,7 @@
 
 
 class TransfersClient(rest_client.RestClient):
-    """Client class to send CRUD Volume Transfer V2 API requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume Transfer API requests"""
 
     def create_volume_transfer(self, **kwargs):
         """Create a volume transfer.
diff --git a/tempest/lib/services/volume/v2/types_client.py b/tempest/lib/services/volume/v2/types_client.py
index af4fd8c..ef5e434 100644
--- a/tempest/lib/services/volume/v2/types_client.py
+++ b/tempest/lib/services/volume/v2/types_client.py
@@ -21,8 +21,7 @@
 
 
 class TypesClient(rest_client.RestClient):
-    """Client class to send CRUD Volume V2 API requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume API requests"""
 
     def is_resource_deleted(self, id):
         try:
diff --git a/tempest/lib/services/volume/v2/volume_manage_client.py b/tempest/lib/services/volume/v2/volume_manage_client.py
index 12f4240..ddae127 100644
--- a/tempest/lib/services/volume/v2/volume_manage_client.py
+++ b/tempest/lib/services/volume/v2/volume_manage_client.py
@@ -19,9 +19,7 @@
 
 
 class VolumeManageClient(rest_client.RestClient):
-    """Volume manage V2 client."""
-
-    api_version = "v2"
+    """Volume manage client."""
 
     def manage_volume(self, **kwargs):
         """Manage existing volume.
diff --git a/tempest/lib/services/volume/v2/volumes_client.py b/tempest/lib/services/volume/v2/volumes_client.py
index da3f2b5..dd019f6 100644
--- a/tempest/lib/services/volume/v2/volumes_client.py
+++ b/tempest/lib/services/volume/v2/volumes_client.py
@@ -23,8 +23,7 @@
 
 
 class VolumesClient(base_client.BaseClient):
-    """Client class to send CRUD Volume V2 API requests"""
-    api_version = "v2"
+    """Client class to send CRUD Volume API requests"""
 
     def _prepare_params(self, params):
         """Prepares params for use in get or _ext_get methods.