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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz AMG C43 2019–2021 — technical service bulletin

Bulletin Emissions - 2024100016 · NHTSA communication 11035238 · issued Jul 24, 2026

Technical service bulletin
communication type
Engine
component
2019–2021
model years
60
vehicle entries

Official summary

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2021 C-Class, G-Class, GLC, GT, S-Class (205, 463, 253, 190 & 222 platforms) vehicles, the engine control unit software does not correspond to current production specifications. It is therefore possible that on-board diagnostics and/or exhaust gas emissions requirements may not be fulfilled.

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.