"How reliable is the 2009 Mazda Cx-9?"

"Based on 65 NHTSA complaints, the 2009 Mazda Cx-9 has a median complaint mileage of 80000 miles. The most common issue is SERVICE BRAKES."

"What are common problems with the 2009 Mazda Cx-9?"

"The most frequently reported component in NHTSA complaints for the 2009 Mazda Cx-9 is SERVICE BRAKES, accounting for a significant portion of the 65 total complaints filed."

2009 Mazda Cx-9: Reliability Data

Source: NHTSA — 65 complaints

Total Complaints

80,000mi

Median Mileage

SERVICE BRAKES

Top Issue

Crash Reports

When Do Complaints Happen?

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

49,000 25th Percentile

80,000 Median Mileage

122,500 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES

AIR BAGS

SUSPENSION

POWER TRAIN

ENGINE

WHEELS

EXTERIOR LIGHTING

STEERING

UNKNOWN OR OTHER

TIRES

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"THE TACHOMETER OF THE CAR STICKS IN HIGH REVS (1500-2500),ENGINE ON, CAR IN NEUTRAL, FOOT OFF THE GAS PEDAL, IF THE CAR IS MOVING OVER 20-25MPH (EITHER BY FREE FALLING A HILL OR BEING PULLED) THE TACHOMETER VARIES THE RPM READING TO MATCH SPEED JUST AS IF THE CAR WOULD BE IN 'D' POSITION. I THINK..."

"OWN A 2009 MAZDA CX-9 EQUIPPED WITH BRIDGESTONE DUELER H/L 400, SIZE 245/50/R20. AT 26040 MILES TPMS LOW TIRE PRESSURE INDICATOR LIGHT ILLUMINATED. BEGAN TO UNSCREW VALVE STEM CAP ON PASSENGER SIDE REAR TIRE AND IT CRACKED IN HALF, SENSOR CAME OUT, AND ALL AIR IN TIRE CAME OUT. CONTACTED MAZDA ROAD..."

"RE: MAZDA CORPORATE FILE NUMBER [XXX] I WANT TO MAKE A COMPLAINT THAT MAZDA USA AND FREMONT MAZDA DEALER DECLINED A VALID DEFECT REAR LED TAIL LIGHTS WHEN I EXERCISE IT THROUGH MAZDA FACTORY NEW CAR WARRANTY. I HAVE ALREADY CONTACT MAZDA CORPORATE FOR THIS DEFECT PROBLEM AND WORKED THROUGH THE LOCA..."

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