2000 Audi A4 AEB/AQA (B5)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Oil consumption on 1.8T engines
• Timing belt wear
• Coolant leaks from thermostat housing

First checks

• Timing belt condition and replacement history
• Oil leaks around valve cover gasket
• Function of electrical components (windows, central locking)

Vor dem Teiletausch

• Save fault codes and freeze-frame data before clearing anything.
• Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
• Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

• Engine availability and specs vary significantly by market; US models favored the 1.8T and 2.8L V6 petrol engines.
• Diesel engines were more common in European markets and not available in the US for model year 2000.