2021 Mazda CX-9 Other or unknown Problems
- Complaints
- 6about this part
- Share
- 15%of 40 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the other or unknown of the 2021 Mazda CX-9, 15% of the 40 complaints for this model year. 2 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Rear passenger handle and hook above seat in roof splintered into sharp projectiles flying through cabin when air bag deplopyed I showed the sharp pieces to my insurance adjuster the power of the right curtain air bag deployment broke the handle to pieces and if anyone had been in the back seat they could have had an eye put out or been emplailed by the sharp pieces”
NHTSA complaint #11489125, filed 2022-10“I was leaving for work when I put my personal items in the front passenger side first and then continued to walk around the car to get to the drivers side. Once I closed the passenger side door the car auto locked with all of my items in it including the key. Thankfully I had my cell phone in my pocket which has access to open the car via the Mazda app but it would not work. The spare key was not at the current location the car was at. We had to call someone out to unlock the car. …”
NHTSA complaint #11571147, filed 2024-02“I was in a parking lot and came to a stop and placed the car in reverse to back into a parking space. The back-up camera was on and I began to back into the parking space when the car suddenly lurched/jerked forward and accelerated on its own. The car jumped the parking lot median strip and I hit a tree head on. I had my seatbelt on and the airbag deployed. The car then reversed back off the median into the parking lot. I turned off the car. Insurance company will have it inspected. The vehicle is a total loss. …”
NHTSA complaint #11550295, filed 2023-10“My MazdaCx9 engine consumes (burns) an excessive amount of oil, necessitating frequent top-offs between oil changes.This issue started after the first oil change and continued since then.”
NHTSA complaint #11632117, filed 2024-12Related service bulletins
- 11037900Sep 17, 2026Mazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text.
- 11037634Sep 10, 2026This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 08/18/26 and 06/15/26 DESCRIPTION Some customers may…
- 11037018Sep 4, 2026This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCRIPTION Some customers may complain…
- 11037012Aug 20, 2026This Service Alert supersedes the previously issued Service Alerts listed below: The changes are noted in Red. Infotainment Reboot With Navigation Card Installed This Service…
- 11037019Aug 19, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red text. SA-039/26 06/15/26 Mazda Connect Symptom Troubleshooting DESCRIPTION…
- 11037010Aug 18, 2026DESCRIPTION Some customers may complain about SiriusXM Travel Link, Traffic Plus showing expired even though the customer purchased a paid subscription. SiriusXM audio packages…
- 11034448Jul 1, 2026This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-017/25 12/16/25, 09/08/25, 07/14/25, 05/15/25 and 03/21/25 DESCRIPTION…
- 11034436Jun 18, 2026This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red. 09-012/21 12/13/21, 06/10/21 and 04/27/21 DESCRIPTION Some customers may…
- 11034444Jun 16, 2026This Service Alert supersedes the previously issued SA(s) listed below. The changes are noted in Red. SA-009/25 08/22/25 and 02/18/25 DESCRIPTION Some customers may experience a…
- 11034443Jun 16, 2026This Service Alert supersedes the previously issued SA listed below. The changes are noted in Red text. SA-012/25 10/06/25, 08/21/25, 05/15/25 and 02/27/25 DESCRIPTION Customers…
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2023 | 6 | 46% |
| 2021 | 6 | 15% |
| 2020 | 3 | 16% |
| 2019 | 14 | 26% |
| 2018 | 20 | 16% |
| 2017 | 9 | 15% |
| 2016 | 6 | 6% |
| 2015 | 9 | 26% |
| 2014 | 9 | 17% |
| 2013 | 9 | 13% |
| 2012 | 6 | 3% |
| 2011 | 6 | 4% |
| 2010 | 7 | 4% |
| 2009 | 2 | 3% |
| 2008 | 13 | 8% |
| 2007 | 6 | 7% |
Other parts of the 2021 Mazda CX-9
21 complaintsTransmission and drivetrain
5 complaintsBrakes
4 complaintsForward collision avoidance
4 complaintsVehicle speed control
3 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsElectrical system
2 complaintsSteering
1 complaintsSuspension
1 complaintsTires
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2021 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