Audi A6 2008–2011 — technical service bulletin
Bulletin Circular - Emiss · NHTSA communication 10138345 · issued Mar 8, 2018
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008–2011
model years
8
vehicle entries
Official summary
Over time and mileage and under certain conditions, the factory-installed catalysts may not perform as required by Federal regulations. If the effectiveness of a catalyst is reduced, this may result in an increase in tailpipe emissions and the vehicle could fail to pass an emissions inspection. Updated exhaust clamp part number to reference ETKA
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.