2021 Mazda CX-9 problems and recalls

51% of owner complaints on the 2021 Mazda CX-9 related to the Engine (20 of 39).

39
Complaints
1
Recalls
7
Crash reports
0
Fire reports
1
Injuries
69.8
Severity index

Severity index 69.8 Medium. The index weights crashes, fires, injuries and fatalities per 100 complaints. How it is calculated.

Middle half of all tracked vehiclesThis vehicle: 69.8p25 46p75 80cleanestworst
Severity index against the quartile range for all tracked vehicles.

Components cited in complaints

EngineEngine: 20 complaints (51.3%)20 51%Unknown Or OtherUnknown Or Other: 6 complaints (15.4%)6 15%Power TrainPower Train: 4 complaints (10.3%)4 10%Forward Collision Avoid…Forward Collision Avoidance: 4 complaints (10.3%)4 10%Service BrakesService Brakes: 4 complaints (10.3%)4 10%Vehicle Speed ControlVehicle Speed Control: 3 complaints (7.7%)3 8%Back Over PreventionBack Over Prevention: 2 complaints (5.1%)2 5%Air BagsAir Bags: 2 complaints (5.1%)2 5%
A single complaint can cite more than one component, so shares total over 100%.
ComponentComplaintsShare of complaints citing it
ENGINE2051.3%
UNKNOWN OR OTHER615.4%
POWER TRAIN410.3%
FORWARD COLLISION AVOIDANCE410.3%
SERVICE BRAKES410.3%
VEHICLE SPEED CONTROL37.7%
BACK OVER PREVENTION25.1%
AIR BAGS25.1%

Complaints filed per year

06112021: 12022: 112023: 92024: 102025: 22026: 6 (partial year)21221123242526
Complaints by the calendar year they were filed. The hatched bar is the current year to date.
YearComplaints
20211
202211
20239
202410
20252
2026 (year to date)6
Filings in 2023 to 2025 ran 1.8x those in 2021 to 2022 (21 against 12).

Recall campaigns

CampaignReportedComponentSummary
21V75000027/09/2021SEATS:MID/REAR ASSEMBLYMazda North American Operations (Mazda) is recalling certain 2020-2021 CX-9 vehicles equipped with 60/40 split bench second-row seats. The left-side second-row seat may unexpectedly slide forward during a crash. As such, these vehicles fail to comply with the requirements of Fe

Other Mazda CX-9 model years

Severity index for every other model year on file. Compare all 11 years side by side.

Source. NHTSA public complaint and recall APIs (api.nhtsa.gov), retrieved 2026-09-22. Complaints are unverified consumer reports. Totals vary with units sold and years on the road. Not affiliated with NHTSA or any manufacturer.