Where is the temperature gauge sending unit in a 2000 A6 2.8 quattro?

In a 2000 Audi A6 2.8 Quattro, the temperature gauge sending unit, also known as the coolant temperature sensor, is typically located on the engine block near the thermostat housing. It is usually situated on the driver's side, towards the back of the engine. To access it, you may need to remove some components or hoses that are in the way. Always refer to a service manual for specific instructions and safety precautions before attempting any repairs.