2021 Mazda CX-30 engine problems
49 owner complaints filed with NHTSA name the engine on the 2021 Mazda CX-30 — 49% of all complaints for this model year.
What owners report
“Excessive oil consumption. Regularly have a low oil warning come up about 6000 kms after an oil change. Oil is always low when checked.”
filed Jul 5, 2026
“While driving, on approach to a stop signal, at an intersection the car stopped moving. The display said engine malfunction, have inspected. The electronics and engine continued to operate, but the car would not move when gas pedal was depressed. I shut off and restarted my vehicle numerous times…”
filed Apr 29, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 01-012/22 10/06/22 DESCRIPTION Some vehicles may exhibit accumulation of dried coolant (1) around the water…
01-010-26 · Service Bulletin/Repair Instructions · issued Aug 10, 2026This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION Mazda Connect Frequently Asked Questions…
SA-042-26 · Service Bulletin/Repair Instructions · issued Jul 1, 2026
Engine problems in other CX-30 years
| Year | Reports | Share |
|---|---|---|
| 2025 CX-30 | 2 | 8% |
| 2023 CX-30 | 1 | 4% |
| 2022 CX-30 | 9 | 27% |
| 2020 CX-30 | 5 | 15% |
Other reported problem areas on the 2021 Mazda CX-30
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.