Porsche bulletin No. 30-26
What it saysManufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils NHTSA’s full summary ↓
Porsche filed this with NHTSA as a service bulletin dated Sep 22, 2026, received Oct 2, 2026, about the power train. It names 41 model years (2021–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationManufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| No. 30-26 | Service bulletin | Sep 22, 2026 | 11037822 | PDF, 52 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: 2026 Porsche 718 Boxster; 2026 Porsche 718 Cayman; 2026 Porsche 718 Spyder; 2023 Porsche Carrera; 2023 Porsche Carrera 4; 2023 Porsche Carrera 4 GTS; 2023 Porsche Carrera 4S; 2023 Porsche Carrera GTS; 2023 Porsche Carrera S; 2021 Porsche Cayman GT4; 2021 Porsche Cayman GTS; 2023 Porsche Edition 50 Year.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 29 model years this bulletin names have filed 138 complaints with NHTSA since 2015. 32 of them name Engine, Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
I was driving the car and warning light “possible R gear fault-driving permitted” came on. While driving on a highway at 50 mph, gear shift started malfunctioning and oscillating between 2nd and 4th gears and I could not change the gears. I lost control of the car speed and it would drop to 25-30mph even if I stepped on the gas pedal.
2022 Porsche Macan · Power Train · filed with NHTSA Oct 25, 2024 · ODI 11622034
On my 2021 Porsche Cayenne Base, which is equipped with the 3.0L V6 EA839 engine, I brought the vehicle to the dealership for a recall service. During inspection, the dealership found a leaking water pump and quoted $8,500 for repairs. There were no visible signs of a coolant leak on the ground, indicating an internal seal failure.
2021 Porsche Cayenne · Engine · filed with NHTSA Aug 31, 2026 · ODI 11760942
While travelling on the freeway on 7/30/23, I experienced a "low oil pressure, shut down engine immediately" warning. I pulled over to the shoulder and was unable to restart the car. It was towed to Porsche Carlsbad dealership where it is awaiting analysis by Porsche. The car has 4900 miles on it and is under the MFG warranty
2021 Porsche 718 · Engine · filed with NHTSA Aug 7, 2023 · ODI 11537030
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group57 other manufacturer communications filed against these Porsche models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Porsche list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| No. 91-26 | Service bulletin | Sep 24, 2026 | Technical Information for Particles/Metal Chips/Residues in Engine Oil |
| No. 72-26 | Service bulletin | Sep 23, 2026 | Symptom-based workshop manual for High-Pitched “Whining” and Whistling Noises in Partial Load Operation from the Engine Area. Note that this… |
| No. 28-26 | Service bulletin | Sep 22, 2026 | Technical information on Transmission Warning Message “P Not Available”, Fault Memory Entries for Parking Lock Buttons in the Shift Console… |
| No. 27-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 198… |
| No. 26-26 | Service bulletin | Sep 22, 2026 | Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1… |
| No. 62-26 | Service bulletin | Sep 1, 2026 | Technical Information for Coolant Warning Light Lights Up: Suspected Coolant Loss on the Coolant Pump |
| 51/26 | Service bulletin | Jul 30, 2026 | Shrill Humming/Clacking Noise from the Engine Compartment: Check Mounting/Fastening of the ATF Cooler and/or ATF Lines (SY 51/26) |
| 18/26 | Warranty extension | Jul 23, 2026 | Warranty Information: Warranty Extension for Transmission Electronics Control Unit (18/26) |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Porsche, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Porsche No. 30-26 a recall?
No. A service bulletin 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 No. 30-26 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Porsche warranty extension on file lists the ones Porsche has filed.
Which vehicles does No. 30-26 cover?
The manufacturer filed it against 41 model years: 2025 Porsche 718, 2024 Porsche 718, 2023 Porsche 718, 2022 Porsche 718, 2021 Porsche 718, 2026 Porsche 911 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.