2006 Audi A4 BGB/BWE (B7)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing belt wear requiring replacement every 90,000 km
• Turbocharger issues on 1.8T engines with high mileage
• Crankshaft position sensor failure
• Oil consumption in some 2.0T engines

First checks

• Check timing belt replacement history
• Inspect for oil leaks from valve cover gasket
• Verify working of cooling system including thermostat
• Scan for fault codes especially on ABS and engine management

Avant de remplacer des pièces

• 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

• Market-specific engines and transmissions include diesel TDI variants predominantly for Europe and petrol-only for North America.
• Diesel variants generally have higher torque but require specific oil and fuels.