TSB SA-020-25A — Mazda Service bulletin
SA-020-25A is a service bulletin on file with NHTSA for 4 Mazda models, 2012–2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer units and transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years SA-020-25A names
| Vehicle | Model years |
|---|---|
| Mazda CX-5 | 2013, 2014, 2015, 2016, 2017 |
| Mazda CX-9 | 2016, 2017, 2018, 2019, 2020 |
| Mazda Mazda3 | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Mazda Mazda6 | 2014, 2015, 2016, 2017, 2018, 2019 |
Every document filed under SA-020-25A
| Document ID | Filed | Type |
|---|---|---|
| SA-020-25a | November 19, 2025 | Service bulletin |
What SA-020-25A covers
Wheels & tires — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB SA-020-25A?
SA-020-25A is a service bulletin filed with NHTSA by Mazda, covering 4 Mazda models across the 2012–2020 model years. NHTSA's summary reads: There have been warranty claims submitted for growling or bearing whine noise in differentials, transfer units and transmissions where the source of the noise was a wheel bearing. This misdiagnosis can lead to multiple repair attempts, warranty debits, and additional…
Which vehicles does SA-020-25A cover?
NHTSA's file names Mazda CX-5 (2013–2017); Mazda CX-9 (2016–2020); Mazda Mazda3 (2012–2018); Mazda Mazda6 (2014–2019). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB SA-020-25A a recall, and is the repair free?
No. SA-020-25A is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of SA-020-25A?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under SA-020-25A, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under SA-020-25A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.