What oil does an Audi A3 diesel take?

An Audi A3 diesel typically requires a high-quality synthetic oil that meets the specifications of VW 507.00 or VW 504.00, depending on the engine model and year. Common viscosity ratings for these oils are 5W-30 or 5W-40. It's always best to consult the owner’s manual or a professional to ensure the correct oil type for your specific model.