Where is the thermostat on 2008 Mazda 3?

The thermostat on a 2008 Mazda 3 is located in the engine compartment, specifically on the engine's cylinder head. It is typically housed within the thermostat housing, which is connected to the upper radiator hose. To access it, you may need to remove the air intake components or other parts that obstruct the view. Always ensure the engine is cool before attempting any repairs.