2012 Mazda CX-9 engine problems
25 owner complaints filed with NHTSA name the engine on the 2012 Mazda CX-9 — 11% of all complaints for this model year.
What owners report
“After hearing low rumbling sound and smelling burnt oil, car was taken to dealer for check up. They informed me of known issue, front PTU leaking oil due to design flaw that put the PTU so close to the exhaust. I am seeing that other owners of this model are also reporting fires due this same exact…”
filed Oct 28, 2022
“Tl* the contact owns a 2012 mazda cx-9. The contact stated while driving at various speeds, the vehicle stalled. Additionally, the brakes failed to engage when the brake pedal was depressed. There was no warning light illuminated. The vehicle was taken to an independent mechanic to be diagnosed…”
filed Apr 29, 2021
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This SA supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-061/25 12/17/25 DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s)…
SA-041-26 · Service Bulletin/Repair Instructions · issued Jun 19, 2026
Engine problems in other CX-9 years
| Year | Reports | Share |
|---|---|---|
| 2021 CX-9 | 19 | 53% |
| 2020 CX-9 | 5 | 26% |
| 2019 CX-9 | 22 | 42% |
| 2018 CX-9 | 73 | 58% |
| 2017 CX-9 | 43 | 70% |
| 2016 CX-9 | 64 | 62% |
| 2015 CX-9 | 17 | 49% |
| 2014 CX-9 | 19 | 35% |
| 2013 CX-9 | 17 | 25% |
| 2011 CX-9 | 15 | 9% |
| 2010 CX-9 | 23 | 12% |
| 2009 CX-9 | 4 | 7% |
Other reported problem areas on the 2012 Mazda CX-9
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.