2010 Mazda CX-9 Engine Problems
- Complaints
- 23about this part
- Share
- 12%of 195 total for the year
- Median mileage
- 85,400miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 23 complaints about the engine of the 2010 Mazda CX-9, 12% of the 195 complaints for this model year. Where a mileage was given, the median is 85,400 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Me and my husband were on our way home from work. The car suddenly overheated and we lost power on I-35, we were able to get the car to an exit and was nearly hit by another car due to loss of steering and power. We had the car towed to a Mazda dealership. There is engine coolant in the oil and we are told it needs a new motor.”
NHTSA complaint #11255475, filed 2019-09, 134,000 miles“Takata recall I have a Mazda cx9 2010, I got no indication that there was a problem with my water pump. The care did not over heat, it did not stall and I was no steam coming from the car. I drove my vehicle to the other side of the water more than 20 miles from my home, so that I could go to work. If it were not for the pharmacist at my job I would have gotten in my car and drove off. He notice a puddle under my car and asked me to come outside so he could investigate the situation further. …”
NHTSA complaint #11039779, filed 2017-10, 15,600 miles“I was driving my car when the transfer case on my 2010 cx9 broke at 109.000 miles and spline gear is worn out. Overwhelming oil smell coming back into car along with horrible grinding noise. Took to my Mazda dealer, Mazda wasn't sure if they could fix, suggested replacing transmission. Mazda tried to fix the transfer case issue, but could have humming noise. Instead of humming noise, after one day of receiving my car back, transmission is failing. Already put $2200 into this repair, but was told the transmission could fail at any time. …”
NHTSA complaint #11062731, filed 2018-01, 109,000 miles“On jan 12, 2019 we were driving home and without warning the temperature gauge spiked and the check engine light came on. The engine stopped and I was able to get the vehicle off the road. I looked to see the coolant reservoir was empty. I was able to refill it, thinking possibly there was a leak. It got us home safely. The next day, enroute to the radiator shop; the same thing happened. After a tow home, then a tow to the radiator shop and eventually a tow home, it was diagnosed as a water pump failure and now a new engine is the answer for the repair. …”
NHTSA complaint #11170858, filed 2019-01, 110,000 miles“We were sitting in a parking lot waiting on a pizza. We noticed the A/C wasn't cooling, and then noticed the car was starting to overheat. (this was the first time ever). We checked the radiator, it was empty. We purchased coolant and filled up the reservoir. Never saw any leaks. Car started but seemed sluggish like the battery was low. We got our pizza and drove about 6 miles where we parked till we took it to the dealer on monday. Our mechanic called me later to tell me that the water pump had failed and that it had leaked into the oil pan and we would have to have the engine replaced. …”
NHTSA complaint #11394287, filed 2021-02, 108,000 milesRelated service bulletins
- 11034447Jun 19, 2026This 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…
- 11032103Apr 21, 2026This 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…
- 11007019Aug 15, 2024If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by…
- 10154455Feb 4, 2019Some customers may complain of a check engine light on while driving the vehicle. If DTCs P2A04:00, P2272:00 and/or other DTCs are found during diagnosis, follow the repair…
- 10134916Feb 6, 2018ome customers may complain of a check engine light on while driving the vehicle. If DTCs P2A04:00, P2272:00 and/or other DTCs are found during diagnosis, follow the repair…
- 10092724Jun 24, 2016If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the…
- 10085289Jun 24, 2016If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the…
- 10092322May 27, 2016Workshop manual evap system leak inspection using the m-mds has been discontinued for some models. Instead, the workshop manual evap system leak inspection using evap leak tester…
- 10103922Feb 26, 2016Some vehicles may exhibit an engine coolant leak (a) between the lower radiator hose (b) and the thermostat housing (c). The lower radiator hose has been modified to improve…
- 10076633Feb 26, 2016Summary to be provided on a future date.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 21 | 53% |
| 2020 | 5 | 26% |
| 2019 | 23 | 43% |
| 2018 | 76 | 59% |
| 2017 | 43 | 70% |
| 2016 | 68 | 64% |
| 2015 | 17 | 49% |
| 2014 | 19 | 35% |
| 2013 | 17 | 25% |
| 2012 | 25 | 11% |
| 2011 | 15 | 9% |
| 2010 | 23 | 12% |
| 2009 | 4 | 7% |
| 2008 | 6 | 3% |
| 2007 | 3 | 3% |
Other parts of the 2010 Mazda CX-9
91 complaintsTransmission and drivetrain
23 complaintsAir bags
18 complaintsSuspension
16 complaintsVehicle speed control
9 complaintsOther or unknown
7 complaintsElectrical system
6 complaintsBody and structure
6 complaintsEngine cooling
5 complaintsExterior lighting
4 complaintsSteering
4 complaintsWheels
4 complaints
← All problems reported for the 2010 Mazda CX-9
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology