Audi A3 2018 — technical service bulletin
Bulletin 18AUUSMaint0220 · NHTSA communication 10171760 · issued Feb 12, 2020
Technical service bulletin
communication type
Equipment
component
2018
model years
19
vehicle entries
Official summary
OIL CHART SECTION: CHANGED - Castrol Oil to 'Audi approved XXXX-Refer to the Parts Catalog' for all models.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.