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Service bulletins for the 2019 Mercedes-Benz AMG GT

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

242 on file from NHTSA, as of 2026-10-19.

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Only bulletins with type: Emissions are shown. Show all

Bulletins, newest first
Emissions - 20241000162026-07-27. Emissions. ENGINE. 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.
Emissions - 20260200062026-04-25. Emissions. ELECTRICAL SYSTEM; ENGINE. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles equipped with an 8-cylinder engine, the software of the engine control unit may not correspond to the current specifications. Under specific conditions, the OBD system may not detect an aged catalyst, which could impair the engine’s ability to adjust the catalyst heating, potentially resulting in increased exhaust emissions. MBUSA will conduct an emission service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicles.
NCU - 20241000162026-02-27. Emissions. ENGINE; ELECTRICAL SYSTEM. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2021 G-Class, S-Class and GT (463, 222 & 190 platforms) vehicles, the engine control unit software does not correspond to current production specifications. It is therefore possible that onboard diagnostics and/or exhaust gas emissions requirements may not be fulfilled. MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will perform the ECU software update.
NCU-20250500012025-05-09. Emissions. ELECTRICAL SYSTEM. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that certain Model Year (“MY”) 2019 – 2022 C-Class, CLS, E-Class, E-Class Coupe/Convertible, GLE/GLS-Class and AMG GT vehicles (206, 257, 213, 238,167 and 290 platforms) are potentially affected with multiple topics related to the 48V battery management system, which erroneously may or may not illuminate the check engine malfunction indicator lamp (‘MIL’) in one or more of the following circumstances: • Memory error causing battery switch to open, prohibiting vehicle to restart; • The battery thermal management system, power supply voltage (12V) measurement and 48V battery switch diagnostic may not be monitored by the OBD-system; • Plausibility check of the temperature sensor, temperature range and Real Time Clock (RTC) monitoring might not operate as intended. MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will update the drivetrain control unit software on the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.