2011 Mazda Cx-9: Reliability Data

Source: NHTSA — 206 complaints
206
Total Complaints
75,200mi
Median Mileage
SERVICE BRAKES
Top Issue
10
Crash Reports

When Do Complaints Happen?

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

55,000 25th Percentile
75,200 Median Mileage
103,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES
96
POWER TRAIN
24
AIR BAGS
22
ENGINE
15
UNKNOWN OR OTHER
5
ELECTRICAL SYSTEM
5
SUSPENSION
5
STEERING
4
ELECTRONIC STABILITY CONTROL (ESC)
4
VEHICLE SPEED CONTROL
4

Severity Assessment

10
Crashes
5
Fires
2
Injuries
0
Deaths

Sample Complaint Reports

"THE TRACTION CONTROL LIGHT ON MY CX9 COMES ON AND STAYS ON, EVEN IN DRY CONDITIONS IN WHICH THE TRACTION CONTROL SYSTEM IS NOT NEEDED. ALSO THE TCS SYSTEM LIGHT IS ILLUMINATED AND THE TCS OFF LIGHT IS ILLUMINATED. *TR"
"I HAD MY CX-9 GT DRIVING ON THE ROAD. THIS HAPPENED WHILE I DROVE ON STREET AND STEPPED ON BRAKE THE PEDAL TO STOP FOR A RED LIGHT. I ALMOST HIT THE CAR IN FRONT OF ME, BECAUSE MY BRAKE AT THIS TIME, ALL OF SUDDEN, TOOK LONGER STOPPING DISTANCE AS I EXPECTED. IT WAS A CLOSE CALL TO HIT THE CAR IN FR..."
"POWER BRAKE BOOSTER FAILURE. *TR"

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