Mercedes-Benz bulletin Emissions - 2026020006
Mercedes-Benz filed this with NHTSA as a emissions communication dated Apr 24, 2026, received Apr 25, 2026, about the engine. It names 6 model years (2019). 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 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.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| Emissions - 2026020006 | Emissions | Apr 24, 2026 | 11031553 | PDF, 519 KB |
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 model years this site has no page for: 2019 Mercedes-Benz E 450 4MATIC Cabriolet; 2019 Mercedes-Benz E 450 4MATIC Wagon; 2019 Mercedes-Benz S 550.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mercedes-Benz Emissions - 2026020006 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, or on its page here.
Is the Emissions - 2026020006 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 Emissions - 2026020006 cover?
The manufacturer filed it against 6 model years: 2019 Mercedes-Benz AMG GT, 2019 Mercedes-Benz E-Class, 2019 Mercedes-Benz S-Class, 2019 Mercedes-Benz E 450 4MATIC Cabriolet, 2019 Mercedes-Benz E 450 4MATIC Wagon, 2019 Mercedes-Benz S 550. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.