diff --git a/homeassistant/components/rdw/sensor.py b/homeassistant/components/rdw/sensor.py
index 1ce63dfaead..06ad446fccb 100644
--- a/homeassistant/components/rdw/sensor.py
+++ b/homeassistant/components/rdw/sensor.py
@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
+from datetime import date
 from typing import Callable
 
 from vehicle import Vehicle
@@ -15,7 +16,6 @@ from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import (
     CoordinatorEntity,
     DataUpdateCoordinator,
@@ -28,7 +28,7 @@ from .const import CONF_LICENSE_PLATE, DOMAIN, ENTRY_TYPE_SERVICE
 class RDWSensorEntityDescriptionMixin:
     """Mixin for required keys."""
 
-    value_fn: Callable[[Vehicle], str | float | None]
+    value_fn: Callable[[Vehicle], date | str | float | None]
 
 
 @dataclass
@@ -43,13 +43,13 @@ SENSORS: tuple[RDWSensorEntityDescription, ...] = (
         key="apk_expiration",
         name="APK Expiration",
         device_class=DEVICE_CLASS_DATE,
-        value_fn=lambda vehicle: vehicle.apk_expiration.isoformat(),
+        value_fn=lambda vehicle: vehicle.apk_expiration,
     ),
     RDWSensorEntityDescription(
         key="ascription_date",
         name="Ascription Date",
         device_class=DEVICE_CLASS_DATE,
-        value_fn=lambda vehicle: vehicle.ascription_date.isoformat(),
+        value_fn=lambda vehicle: vehicle.ascription_date,
     ),
 )
 
@@ -98,6 +98,6 @@ class RDWSensorEntity(CoordinatorEntity, SensorEntity):
         )
 
     @property
-    def native_value(self) -> StateType:
+    def native_value(self) -> date | str | float | None:
         """Return the state of the sensor."""
         return self.entity_description.value_fn(self.coordinator.data)