How to check the coolant level on an Audi A6?

I'm a new owner of an Audi A6 and I want to make sure I'm properly maintaining my car. How do I check and top up the coolant level?

To check your coolant level, first make sure your engine is cool. Open the hood and locate the coolant reservoir, which is typically a white plastic tank with a cap labelled 'coolant' or 'engine coolant'. The level should be between the 'min' and 'max' marks, and the liquid should be bright green, pink, or orange in color.