Mazda CX-30 2020–2023 — technical service bulletin
Bulletin 01-010-23 · NHTSA communication 10241607 · issued Aug 17, 2023
Technical service bulletin
communication type
Power Train
component
2020–2023
model years
7
vehicle entries
Official summary
Some customers may complain about engine surging 100-200 rpm when accelerating up a hill at altitudes around 6,700 feet or higher. This concern may be caused by improper PCM control software in particular situations.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.