Mazda bulletin 01-008-26
What it saysThis bulletin supersedes the previously issued bulletin(s) listed below. NHTSA’s full summary ↓
Mazda filed this with NHTSA as a service bulletin dated May 1, 2026, received May 3, 2026, about the power train. It names 33 model years (2016–2021). 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.
Get the next Mazda bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 01-008/23 06/05/23 Some vehicles may exhibit rattling noises from the engine compartment and oil leakage from the drive belt auto tensioner. This may be caused by insufficient sealing at the drive belt auto tensioner damper when the auto tensioner fully operates under both high ambient temperature and high load conditions. To eliminate this concern, the shape of the drive belt auto tensioner damper has been changed. REPAIR PROCEDURE If the tensioner is found to be "No Good" after completing the Drive Belt Auto Tensioner Inspection, replace it with a modified part according to the instructions on MGSS online:
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 01-008-26 | Service bulletin | May 1, 2026 | 11032003 | PDF, 681 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| PE01-15-980 | — | — | |
| PE03-15-980B | — | — | |
| PE03-15-980C | Tensioner-Auto | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (6 pages), read Sep 29, 2026. A part number is shown only where it matches Mazda’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Mazda bulletins for one of these models
A weekly email, sent only in a week when Mazda files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 33 model years this bulletin names have filed 2,733 complaints with NHTSA since 2015. 229 of them name 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.
On the 2016 Mazda CX-5, the 41 owners who gave an odometer reading for Power Train reported it at a median of 5,411 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
I own 2020 Mazda cx 30 with 66000 miles. The transmission was shifting with jerky motions. On july 14, 2025 I brought the car to palisades Mazda in rockland county new york to have transmission looked at and to change transmission fluid changed. After I dropped the car off later that day I got a call that the transmission was condemned.
2020 Mazda CX-30 · Power Train · filed with NHTSA Jul 18, 2025 · ODI 11674592
On December 7, 2023 at approximately 10:30pm, I was traveling west bound on . Suddenly, there was a loud thumping noise from under the passenger seat. After about 10 seconds, it escalated to an extremely loud banging and the smell of oil. Not a single warning light appeared on my dashboard. I immediately attempted to pull off the road.
2016 Mazda MX-5 · Power Train · filed with NHTSA Jan 5, 2024 · ODI 11563848
From a full stop, vehicle lags or lurches from takeoff when you hit the accelerator. This is a known problem by Mazda on this vehicle (gen 7) after 3000 miles or more. When I hit the accelerator (especially on a new car), I expect it to go. This lag in moving off the line can be dangerous, in my opinion, but apparently not in mazda's.
2019 Mazda Mazda3 · Power Train · filed with NHTSA Mar 16, 2020 · ODI 11318310
In depth: 2016 Mazda CX-5 transmission and drivetrain problems →
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 group24 other manufacturer communications filed against these Mazda models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Mazda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 01-003-26a | Service bulletin | May 1, 2026 | This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-003/26 01/30/26 Some vehicl… |
| 01-007-26 | Service bulletin | Apr 2, 2026 | Some vehicles may exhibit the check engine light ON with DTC P2112… |
| SA-056-25 | Service bulletin | Nov 27, 2025 | When inspected, the differential or PTO oil is dark or black. This is considered normal and NO repair should be performed. During production… |
| 05-001-25a | Service bulletin | Nov 23, 2025 | Some customers may see the A/T warning light on during (or immediately after) engine start-up with DTCs P073D:00-TCM / P1738:00-TCM stored.… |
| SA-040-25a | Service bulletin | Nov 18, 2025 | A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models. ATF-A7 is an extremely low viscosity formulation with l… |
| SA-052-25 | Service bulletin | Nov 6, 2025 | Some customer's might state that they notice fluid or oil leaking/dripping on the ground when the vehicle is parked. For this concern, inspe… |
| SA-040-25 | Service bulletin | Aug 27, 2025 | A New Automatic Transmission Fluid (ATF-A7) is being used for some 2023-2026 models. ATF-A7 is an extremely low viscosity formulation with l… |
| 05-001-25 | Service bulletin | May 22, 2025 | Some customers may see the A/T warning light on during (or immediately after) engine start-up with DTC P073D:00-TCM stored. P073D:00-TCM: Tu… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Mazda, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Mazda 01-008-26 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 01-008-26 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 Mazda warranty extension on file lists the ones Mazda has filed.
Which vehicles does 01-008-26 cover?
The manufacturer filed it against 33 model years: 2020 Mazda CX-3, 2019 Mazda CX-3, 2018 Mazda CX-3, 2017 Mazda CX-3, 2016 Mazda CX-3, 2021 Mazda CX-30 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built before 30 Jun 2020; built before 21 Jan 2021; built before 20 Jul 2020 — the build date is on the certification label in the driver’s door jamb.