NHTSA service bulletin

NHTSA Service Bulletin 11029055: 2019-2021 Mercedes-benz Amg G63

Official manufacturer communication context for 2019-2021 Mercedes-benz Amg G63, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11029055 summary graphic for 2019-2021 Mercedes-benz Amg G63
11029055NHTSA document ID
Service campaigncommunication type
15affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

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.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
Mercedes-benzAmg G632019-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gt2019-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gt C2019-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gt R2019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg Gt S2019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg S632019-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzAmg S652019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzG 5502019-2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzS 4502019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzS 5502019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-benzS 5602021Ask for service records and run the exact VIN before purchase.
Mercedes-benzS 560 E2019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-maybachS 5602021Ask for service records and run the exact VIN before purchase.
Mercedes-maybachS 560 4matic2019, 2020Ask for service records and run the exact VIN before purchase.
Mercedes-maybachS 6502019, 2020Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 11029055?

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.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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