diff --git a/homeassistant/components/bmw_connected_drive/__init__.py b/homeassistant/components/bmw_connected_drive/__init__.py
index 6e7723b16ec..273bac8ef0e 100644
--- a/homeassistant/components/bmw_connected_drive/__init__.py
+++ b/homeassistant/components/bmw_connected_drive/__init__.py
@@ -120,7 +120,6 @@ class BMWConnectedDriveAccount:
         self, username: str, password: str, region_str: str, name: str, read_only
     ) -> None:
         """Initialize account."""
-
         region = get_region_from_name(region_str)
 
         self.read_only = read_only
diff --git a/homeassistant/components/bmw_connected_drive/binary_sensor.py b/homeassistant/components/bmw_connected_drive/binary_sensor.py
index 591cdadda35..fc3069f284c 100644
--- a/homeassistant/components/bmw_connected_drive/binary_sensor.py
+++ b/homeassistant/components/bmw_connected_drive/binary_sensor.py
@@ -4,9 +4,10 @@ import logging
 from bimmer_connected.state import ChargingState, LockState
 
 from homeassistant.components.binary_sensor import BinarySensorDevice
-from homeassistant.const import LENGTH_KILOMETERS
+from homeassistant.const import ATTR_ATTRIBUTION, LENGTH_KILOMETERS
 
 from . import DOMAIN as BMW_DOMAIN
+from .const import ATTRIBUTION
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -107,7 +108,10 @@ class BMWConnectedDriveSensor(BinarySensorDevice):
     def device_state_attributes(self):
         """Return the state attributes of the binary sensor."""
         vehicle_state = self._vehicle.state
-        result = {"car": self._vehicle.name}
+        result = {
+            "car": self._vehicle.name,
+            ATTR_ATTRIBUTION: ATTRIBUTION,
+        }
 
         if self._attribute == "lids":
             for lid in vehicle_state.lids:
@@ -143,7 +147,6 @@ class BMWConnectedDriveSensor(BinarySensorDevice):
 
     def update(self):
         """Read new state data from the library."""
-
         vehicle_state = self._vehicle.state
 
         # device class opening: On means open, Off means closed
@@ -152,7 +155,7 @@ class BMWConnectedDriveSensor(BinarySensorDevice):
             self._state = not vehicle_state.all_lids_closed
         if self._attribute == "windows":
             self._state = not vehicle_state.all_windows_closed
-        # device class safety: On means unsafe, Off means safe
+        # device class lock: On means unlocked, Off means locked
         if self._attribute == "door_lock_state":
             # Possible values: LOCKED, SECURED, SELECTIVE_LOCKED, UNLOCKED
             self._state = vehicle_state.door_lock_state not in [
diff --git a/homeassistant/components/bmw_connected_drive/const.py b/homeassistant/components/bmw_connected_drive/const.py
new file mode 100644
index 00000000000..d1a44b5e5c9
--- /dev/null
+++ b/homeassistant/components/bmw_connected_drive/const.py
@@ -0,0 +1,2 @@
+"""Const file for the BMW Connected Drive integration."""
+ATTRIBUTION = "Data provided by BMW Connected Drive"
diff --git a/homeassistant/components/bmw_connected_drive/lock.py b/homeassistant/components/bmw_connected_drive/lock.py
index 5323e94c1c3..7d4ad420af4 100644
--- a/homeassistant/components/bmw_connected_drive/lock.py
+++ b/homeassistant/components/bmw_connected_drive/lock.py
@@ -4,10 +4,12 @@ import logging
 from bimmer_connected.state import LockState
 
 from homeassistant.components.lock import LockDevice
-from homeassistant.const import STATE_LOCKED, STATE_UNLOCKED
+from homeassistant.const import ATTR_ATTRIBUTION, STATE_LOCKED, STATE_UNLOCKED
 
 from . import DOMAIN as BMW_DOMAIN
+from .const import ATTRIBUTION
 
+DOOR_LOCK_STATE = "door_lock_state"
 _LOGGER = logging.getLogger(__name__)
 
 
@@ -36,6 +38,9 @@ class BMWLock(LockDevice):
         self._unique_id = f"{self._vehicle.vin}-{self._attribute}"
         self._sensor_name = sensor_name
         self._state = None
+        self.door_lock_state_available = (
+            DOOR_LOCK_STATE in self._vehicle.available_attributes
+        )
 
     @property
     def should_poll(self):
@@ -59,10 +64,14 @@ class BMWLock(LockDevice):
     def device_state_attributes(self):
         """Return the state attributes of the lock."""
         vehicle_state = self._vehicle.state
-        return {
+        result = {
             "car": self._vehicle.name,
-            "door_lock_state": vehicle_state.door_lock_state.value,
+            ATTR_ATTRIBUTION: ATTRIBUTION,
         }
+        if self.door_lock_state_available:
+            result["door_lock_state"] = vehicle_state.door_lock_state.value
+            result["last_update_reason"] = vehicle_state.last_update_reason
+        return result
 
     @property
     def is_locked(self):
@@ -89,7 +98,6 @@ class BMWLock(LockDevice):
 
     def update(self):
         """Update state of the lock."""
-
         _LOGGER.debug("%s: updating data for %s", self._vehicle.name, self._attribute)
         vehicle_state = self._vehicle.state
 
diff --git a/homeassistant/components/bmw_connected_drive/sensor.py b/homeassistant/components/bmw_connected_drive/sensor.py
index 30c12d7d7a0..d7eec8b9479 100644
--- a/homeassistant/components/bmw_connected_drive/sensor.py
+++ b/homeassistant/components/bmw_connected_drive/sensor.py
@@ -4,6 +4,7 @@ import logging
 from bimmer_connected.state import ChargingState
 
 from homeassistant.const import (
+    ATTR_ATTRIBUTION,
     CONF_UNIT_SYSTEM_IMPERIAL,
     LENGTH_KILOMETERS,
     LENGTH_MILES,
@@ -16,6 +17,7 @@ from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.icon import icon_for_battery_level
 
 from . import DOMAIN as BMW_DOMAIN
+from .const import ATTRIBUTION
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -101,7 +103,6 @@ class BMWConnectedDriveSensor(Entity):
     @property
     def icon(self):
         """Icon to use in the frontend, if any."""
-
         vehicle_state = self._vehicle.state
         charging_state = vehicle_state.charging_status in [ChargingState.CHARGING]
 
@@ -130,7 +131,10 @@ class BMWConnectedDriveSensor(Entity):
     @property
     def device_state_attributes(self):
         """Return the state attributes of the sensor."""
-        return {"car": self._vehicle.name}
+        return {
+            "car": self._vehicle.name,
+            ATTR_ATTRIBUTION: ATTRIBUTION,
+        }
 
     def update(self) -> None:
         """Read new state data from the library."""