Section 992 (Exhaust System, Emission Controls (CYNB))

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Audi A6 Quattro, 2018 Audi A6, 2017 Audi A6 Quattro, 2017 Audi A6, and 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.