Audi A8 2016–2018 — technical service bulletin
Bulletin AWA 20-05 · NHTSA communication 10174394 · issued Apr 20, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2016–2018
model years
15
vehicle entries
Official summary
This Document informs dealers on the new rear oxygen sensor warranty extension for 2016-2018 S6, S7, RS7, A8, and S8 vehicles
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.