diff --git a/homeassistant/components/mazda/sensor.py b/homeassistant/components/mazda/sensor.py
index 99f8c74d64d..7e8b45e0ca1 100644
--- a/homeassistant/components/mazda/sensor.py
+++ b/homeassistant/components/mazda/sensor.py
@@ -188,6 +188,7 @@ SENSOR_ENTITIES = [
         key="front_left_tire_pressure",
         name_suffix="Front Left Tire Pressure",
         icon="mdi:car-tire-alert",
+        device_class=SensorDeviceClass.PRESSURE,
         native_unit_of_measurement=PRESSURE_PSI,
         state_class=SensorStateClass.MEASUREMENT,
         is_supported=_front_left_tire_pressure_supported,
@@ -197,6 +198,7 @@ SENSOR_ENTITIES = [
         key="front_right_tire_pressure",
         name_suffix="Front Right Tire Pressure",
         icon="mdi:car-tire-alert",
+        device_class=SensorDeviceClass.PRESSURE,
         native_unit_of_measurement=PRESSURE_PSI,
         state_class=SensorStateClass.MEASUREMENT,
         is_supported=_front_right_tire_pressure_supported,
@@ -206,6 +208,7 @@ SENSOR_ENTITIES = [
         key="rear_left_tire_pressure",
         name_suffix="Rear Left Tire Pressure",
         icon="mdi:car-tire-alert",
+        device_class=SensorDeviceClass.PRESSURE,
         native_unit_of_measurement=PRESSURE_PSI,
         state_class=SensorStateClass.MEASUREMENT,
         is_supported=_rear_left_tire_pressure_supported,
@@ -215,6 +218,7 @@ SENSOR_ENTITIES = [
         key="rear_right_tire_pressure",
         name_suffix="Rear Right Tire Pressure",
         icon="mdi:car-tire-alert",
+        device_class=SensorDeviceClass.PRESSURE,
         native_unit_of_measurement=PRESSURE_PSI,
         state_class=SensorStateClass.MEASUREMENT,
         is_supported=_rear_right_tire_pressure_supported,
diff --git a/tests/components/mazda/test_sensor.py b/tests/components/mazda/test_sensor.py
index f7fb379da51..f2e9039397b 100644
--- a/tests/components/mazda/test_sensor.py
+++ b/tests/components/mazda/test_sensor.py
@@ -75,6 +75,7 @@ async def test_sensors(hass):
         state.attributes.get(ATTR_FRIENDLY_NAME) == "My Mazda3 Front Left Tire Pressure"
     )
     assert state.attributes.get(ATTR_ICON) == "mdi:car-tire-alert"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.PRESSURE
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == PRESSURE_PSI
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.MEASUREMENT
     assert state.state == "35"
@@ -90,6 +91,7 @@ async def test_sensors(hass):
         == "My Mazda3 Front Right Tire Pressure"
     )
     assert state.attributes.get(ATTR_ICON) == "mdi:car-tire-alert"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.PRESSURE
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == PRESSURE_PSI
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.MEASUREMENT
     assert state.state == "35"
@@ -104,6 +106,7 @@ async def test_sensors(hass):
         state.attributes.get(ATTR_FRIENDLY_NAME) == "My Mazda3 Rear Left Tire Pressure"
     )
     assert state.attributes.get(ATTR_ICON) == "mdi:car-tire-alert"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.PRESSURE
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == PRESSURE_PSI
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.MEASUREMENT
     assert state.state == "33"
@@ -118,6 +121,7 @@ async def test_sensors(hass):
         state.attributes.get(ATTR_FRIENDLY_NAME) == "My Mazda3 Rear Right Tire Pressure"
     )
     assert state.attributes.get(ATTR_ICON) == "mdi:car-tire-alert"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.PRESSURE
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == PRESSURE_PSI
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.MEASUREMENT
     assert state.state == "33"