Mercedes-Maybach bulletin NCU - 2025110008 / 251108
Mercedes-Maybach filed this with NHTSA as a emissions communication dated Jan 31, 2026, about the engine. It names 1 model year (2024). A emissions communication is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationMercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, the drivetrain control unit software does not correspond to the series production configuration. Vehicles with incorrect software might not meet emission or OBD certification requirements. Moreover, potential influence on the exhaust emissions cannot be ruled out. MBUSA will conduct an emission service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software on the affected vehicle.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NCU - 2025110008 / 251108 | Emissions | Jan 31, 2026 | 11027901 | not yet checked |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against: 2024 Mercedes-Maybach GLS 600 4MATIC.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Maybach NCU - 2025110008 / 251108 a recall?
No. A emissions communication is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.
Is the NCU - 2025110008 / 251108 repair free?
A emissions communication is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does NCU - 2025110008 / 251108 cover?
The manufacturer filed it against 1 model year: 2024 Mercedes-Maybach GLS 600 4MATIC. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.