Porsche warranty extension 18/26
Porsche filed this with NHTSA as a warranty extension dated Jul 23, 2026, received Aug 6, 2026, about the power train. It names 37 model years (2016–2022). A warranty extension 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 communicationWarranty Information: Warranty Extension for Transmission Electronics Control Unit (18/26)
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| 18/26 | Warranty extension | Jul 23, 2026 | 11035922 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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: 2016 Porsche 718 Boxster; 2017 Porsche 718 Boxster; 2018 Porsche 718 Boxster; 2017 Porsche 718 Boxster S; 2018 Porsche 718 Boxster S; 2016 Porsche 718 Cayman; 2017 Porsche 718 Cayman; 2018 Porsche 718 Cayman; 2017 Porsche 718 Cayman S; 2018 Porsche 718 Cayman S; 2021 Porsche Cayman GTS; 2017 Porsche Redundant Boxster; 2020 Porsche Redundant Boxster; 2021 Porsche Redundant Boxster; 2022 Porsche Redundant Boxster; 2021 Porsche Redundant Cayman; 2022 Porsche Redundant Cayman; 2022 Porsche Redundant Cayman GTS.
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 Porsche 18/26 a recall?
No. A warranty extension 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 18/26 repair free?
A warranty extension 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 18/26 cover?
The manufacturer filed it against 37 model years: 2022 Porsche 718, 2021 Porsche 718, 2020 Porsche 718, 2019 Porsche 718, 2022 Porsche 911, 2021 Porsche 911 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.