Hyundai Azera 2017 Used Automatic Gasoline mileage: 300 KM or more The car's temperature is rising. I changed the thermostat, and it fixed its issues for a while, then the temperature started rising again. Honestly, I don't know the exact problem, but I suspect 99% it's the engine head. The transmission has a knock, as shown in the inspection. Front right chassis letter is bent. The body is as clear in the picture.