Toyota Avensis 2003 2.0 diesel service and maintenance
Engine oil
Engine oil capacity: 6.7 litres (7.1 quarts)
For regular oil change Toyota Avensis 2003 2.0 diesel takes approx. 5.9 litres of oil, 6.7 litres is total engine oil capacity.
Oil change interval is 10,000 km or one year, whichever comes first.
Recommended oil type (Oil Viscosity Classification SAE) is 5W-30, 5W-40
Air filter
Air filter change interval is 20,000 km.
After prolonged driving in particularly dusty conditions, it is advisable to check the condition of the air filter earlier and replace it if the filter is visibly dirty.
Fuel filter
Toyota Avensis 2.0 diesel fuel filter change interval is 40,000 km
Replacement interval for the fuel filter in the fuel tank: 80,000 km
Glow plugs
Replacement interval for glow plugs is 100,000 km.
Timing belt
Manufacturers recommended timing belt replacement interval for Toyota Avensis 2.0 diesel is 100,000 km.
Based on practical experience, recommended Toyota Avensis 2003 Wagon 2.0 D-4D timing belt change interval is 90,000 km when belt should be replaced, or at least periodically check the belt's condition after this mileage and replace it at the first sign of damage.
Running your car in aggressive environments (e.g. salt, sand, etc.) causes timing belt to degrade faster and reduces its lifespan; under such conditions, the belt may need to be replaced sooner.
Serpentine (drive) belt
Toyota Avensis 2003 Wagon 2.0 D-4D serpentine or alternator belt replacement interval is 100,000 km.
Engine coolant
Engine coolant (antifreeze) recommended replacement interval for Toyota Avensis 2.0 diesel is 100,000 km or 5 years, whichever comes first.

Toyota Avensis 2003 Wagon 2.0 D-4D 2003 - 2006 Toyota Avensis 2003 technical data
Toyota Avensis 2003 owner reviews
Always consult your vehicle manufacturer's service manual for service intervals and specifications!