2012 Mazda CX-9 power train problems
18 owner complaints filed with NHTSA name the power train on the 2012 Mazda CX-9 — 8% of all complaints for this model year.
What owners report
“The water pump suddenly started leaking and the mechanics I talk to said this is a very common problem with this vehicle and type of engine. Sounds like owners are left to foot the bill for this costly and difficult repair of a defective product. Hopefully more owners come forward and report their…”
filed Jul 24, 2023
“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
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance…
SA-029-26 · Service Bulletin/Repair Instructions · issued Apr 21, 2026
Power Train problems in other CX-9 years
| Year | Reports | Share |
|---|---|---|
| 2021 CX-9 | 2 | 6% |
| 2020 CX-9 | 2 | 11% |
| 2019 CX-9 | 4 | 8% |
| 2018 CX-9 | 13 | 10% |
| 2017 CX-9 | 4 | 7% |
| 2016 CX-9 | 9 | 9% |
| 2015 CX-9 | 3 | 9% |
| 2014 CX-9 | 7 | 13% |
| 2013 CX-9 | 5 | 7% |
| 2011 CX-9 | 25 | 15% |
| 2010 CX-9 | 23 | 12% |
| 2009 CX-9 | 6 | 10% |
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.