2021 Mazda Cx-9: Reliability Data

Source: NHTSA — 41 complaints
41
Total Complaints
51,093mi
Median Mileage
ENGINE
Top Issue
10
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

15,250 25th Percentile
51,093 Median Mileage
53,186 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
16
UNKNOWN OR OTHER
6
SERVICE BRAKES
4
FORWARD COLLISION AVOIDANCE: WARNINGS
3
AIR BAGS
2
POWER TRAIN
2
VISIBILITY/WIPER
1
BACK OVER PREVENTION: WARNINGS
1
STEERING
1
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
1

Severity Assessment

10
Crashes
0
Fires
3
Injuries
0
Deaths

Sample Complaint Reports

"AS I WAS DRIVING DOWNHILL WITH MINIMAL SNOW ON THE GROUND, I TAPPED MY BRAKES ABOUT 7 TIMES BEFORE THEY LOCKED UP. I WENT TO TURN TO STAY ON THE ROAD AND THE STEERING WHEEL WOULDN'T BUDGE CAUSING ME TO GO OFF THE ROAD, INTO AN EMBANKMENT. VEHICLE WAS GOING ABOUT 5-10MPH WHEN THIS OCCURED ON A CITY..."
"AS I WAS DRIVING DOWNHILL WITH MINIMAL SNOW ON THE GROUND, I TAPPED MY BRAKES ABOUT 7 TIMES BEFORE THEY LOCKED UP. I WENT TO TURN TO STAY ON THE ROAD AND THE STEERING WHEEL WOULDN'T BUDGE CAUSING ME TO GO OFF THE ROAD, INTO AN EMBANKMENT. VEHICLE WAS GOING ABOUT 5-10MPH WHEN THIS OCCURED ON A CITY..."
"On 4/30/2022 the rear door lift gate opened unexpectedly and hit the ceiling of a parking garage (The Summit at Las Calinas, Irving Texas) , the glass window shattered, glass fell in and outside the car. An unfamiliar beeping was heard before the accident, but the source could not be located prior t..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28