Every 30,000 km.
Execution order

1. Unscrew the filler plug (arrow) and check that the oil is at the level of the lower edge of the hole on late models with the 01E gearbox or 6–7 mm below the edge of the hole on other models. In the picture – 012 manual transmission.
2. Add liquid if necessary.
(The article is a reprint of material from: AUDImanual)
