2019 Mazda CX-9 problems and complaints
Owners have filed 53 complaints with NHTSA about the 2019 Mazda CX-9. The most-reported areas: Engine (23), Unknown Or Other (14), Electrical System (7).
Key takeaways
- 53 owner complaints on file with NHTSA.
- 1 involve a crash, 0 a fire, 0 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 23 | 43% |
| Unknown Or Other | 14 | 26% |
| Electrical System | 7 | 13% |
| Power Train | 5 | 9% |
| Suspension | 4 | 8% |
| Back Over Prevention | 3 | 6% |
| Structure | 3 | 6% |
| Visibility/Wiper | 2 | 4% |
| Steering | 2 | 4% |
| Service Brakes | 2 | 4% |
| Forward Collision Avoidance | 2 | 4% |
| Fuel/Propulsion System | 1 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2019 Mazda CX-9 SUV FWD | 5/5 | 4/5 | 5/5 | 4/5 |
| 2019 Mazda CX-9 SUV AWD | 5/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Power Train,unknown Or Other,engine - filed 2026-08-22
It’s now in the shop being torn down for further inspection but it looks to be a cracked cylinder head leak .
Power Train,engine - filed 2026-07-10
The engine cylinder head developed an internal coolant leak, allowing coolant to enter the combustion chamber. This caused engine overheating and smoke coming from the tailpipe while driving. A dealer performed a coolant pressure test confirming coolant leaking into the combustion chamber, and wet/dry compression testi...
Engine - filed 2026-06-18
My 2019 Mazda CX-9 (VIN [XXX]) suffered catastrophic cylinder head failure on the SKYACTIV-G 2.5T engine at approximately 124,000 miles. The failure is consistent with Mazda TSB 01-013/21 (and successors 01-007/22, 01-010/24), in which Mazda acknowledged that cylinder heads on this engine can crack at the stud bolt hol...
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More for the 2019 Mazda CX-9
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.