For W176: For 2013-2021 A160 A180 A200 A250 A45AMG AMGGT AMGGTS. For W156: For 2014--2019 GLA180 GLA200 GLA220 GLA250 GLA45AMG GLC300. HIGH-QUALITY FUEL FILLER CAP: An old, loose gas cap, cracked or otherwise faulty gas cap may causes your check engine light CEL turns on.
