Mazda CX-9 Power Train Problems
Owners have filed 165 complaints with NHTSA about power train problems on the Mazda CX-9 across 16 model years. The 2008 model year has the most (27). The words owners use most often: “transfer case” (34% of reports).
- 165power train complaints
- —median miles at failure
- 3mention a crash
- 2mention an injury
- 0related recalls
- $3,950typical repair cost reported by owners
- 30%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Transfer case: mentioned in 56 of 165 complaints (34%)
- Cylinder head: mentioned in 20 of 165 complaints (12%)
- Water pump: mentioned in 12 of 165 complaints (7%)
- Coolant leak: mentioned in 10 of 165 complaints (6%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical power train repair on the Mazda CX-9 at $3,950, and half of them between $1,850 and $6,600.
Based on 11 NHTSA complaints about this problem alone that state a repair bill or quote (2013–2024), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do power train problems happen?
Based on 106 complaints that reported the odometer reading.
How serious are the reports?
Of 165 complaints, 3 mention a crash, 7 a fire, 2 an injury.
Mazda CX-9 power train complaints by model year
| Model year | Power Train complaints | Share of that year | Median miles |
|---|---|---|---|
| 2022 CX-9 | 1 | 9% | — |
| 2021 CX-9 | 5 | 13% | — |
| 2020 CX-9 | 2 | 11% | 14,000 |
| 2019 CX-9 | 5 | 9% | — |
| 2018 CX-9 | 13 | 10% | — |
| 2017 CX-9 | 4 | 7% | 33,500 |
| 2016 CX-9 | 9 | 8% | 13,850 |
| 2015 CX-9 | 3 | 9% | 67,384 |
| 2014 CX-9 | 7 | 13% | 83,900 |
| 2013 CX-9 | 5 | 7% | 56,500 |
| 2012 CX-9 | 18 | 8% | 52,527 |
| 2011 CX-9 | 25 | 15% | 87,000 |
| 2010 CX-9 | 23 | 12% | 76,600 |
| 2009 CX-9 | 6 | 10% | 86,700 |
| 2008 CX-9 | 27 | 16% | 104,000 |
| 2007 CX-9 | 12 | 14% | 122,115 |
When owners reported it
Related recalls (0)
No safety recall lists power train for the Mazda CX-9. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
2021 Mazda CX-9 (VIN: [redacted] / 72,400 mi) Vehicle has suffered complete, sudden loss of motive power at high freeway speeds on four separate occasions. Without warning, the engine loses all propulsion, essentially stalling mid-traffic and forcing me to dangerously coast across active freeway…
I entered the interstate normally, with no issues accelerating or merging. While driving at approximately 70 mph, in traffic, all three warning messages appeared on the instrument cluster at the same time: âSmart Brake System Malfunction,â âDriver Attention Alert System Malfunction,â and…
Itâs now in the shop being torn down for further inspection but it looks to be a cracked cylinder head leak .
The vehicle was parked stationary in the driveway with the engine running for 3-5 minutes with the A/C on. The vehicle then accelerated forward into my garage causing damage. Once I entered the vehicle, both the dash and shifter displayed park. Current TCU system internal failures have been…
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…
Frequently asked questions
Do all Mazda CX-9s have power train problems?
No. NHTSA has 165 owner complaints about power train for the Mazda CX-9. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Mazda CX-9 power train?
No recall currently lists power train for this vehicle.
How much does it cost to fix power train problems on the Mazda CX-9?
Owners report a typical cost of $3,950 (half paid between $1,850 and $6,600), from 11 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about power train problems on the Mazda CX-9?
The most frequent phrase is “transfer case”, in 56 of 165 complaints, followed by “cylinder head” (20).
Other Mazda CX-9 problems
- Service Brakes problems (428)
- Engine problems (365)
- Suspension problems (158)
- Air Bags problems (147)
See all Mazda CX-9 problems.