A temperature sensor for an automobile is disclosed. The temperature sensor includes a conductive sensor body including a bottom wall, an insulative connector housing coupled to the sensor body, first and second terminals provided inside the connector housing, which have lower contact portions, a ceramic element mounted near the bottom wall in the sensor body for detecting temperature, which has lower and upper electrode surfaces, and a connecting disc mounted on the ceramic element, which has lower and upper connecting surfaces. The lower electrode surface of the ceramic element is attached to the bottom wall by a conductive adhesive layer and grounded to the sensor body. The upper electrode surface of the ceramic element is electrically connected to the lower contact portion of the first terminal through the lower and upper connecting surfaces of the connecting disc. The lower contact portion of the second terminal contacts the sensor body.