How many catalytic converters on a 2005 Audi a4 quratro 1.8 turbo?

The 2005 Audi A4 Quattro 1.8 Turbo typically has one main catalytic converter, which is integrated into the exhaust system. Some models may also have a secondary catalytic converter, depending on specific configurations and emissions requirements. It's always best to consult the owner's manual or a professional mechanic for precise information related to your vehicle.