"How reliable is the 2015 Mazda Cx-9?"

"Based on 45 NHTSA complaints, the 2015 Mazda Cx-9 has a median complaint mileage of 65000 miles. The most common issue is Engine."

"What are common problems with the 2015 Mazda Cx-9?"

"The most frequently reported component in NHTSA complaints for the 2015 Mazda Cx-9 is Engine, accounting for a significant portion of the 45 total complaints filed."

2015 Mazda Cx-9: Reliability Data

Source: NHTSA — 45 complaints

Total Complaints

65,000mi

Median Mileage

Engine

Top Issue

Crash Reports

When Do Complaints Happen?

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

7,800 25th Percentile

65,000 Median Mileage

83,183 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Engine

Unknown Or Other

Service Brakes

Power Train

Air Bags

Exterior Lighting

Visibility

Steering

Seat Belts

Electronic Stability Control (Esc)

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"WHILE STOPPED IN TRAFFIC I WAS HIT FROM BEHIND BY A CAR AT MINIMUM GOING 40MPH WHILE PROPELLED MY CAR INTO THE VEHICLE IN FRONT OF ME. THE ENTIRE FRONT AND BACK ENDS OF MY CAR ARE SMASHED IN/HANGING ON AND MY AIR BAGS DID NOT DEPLOY. AUTOBODY SHOP INDICATED THE AIR BAGS SHOULD HAVE GONE OFF WITH THA..."

"TL* THE CONTACT OWNS A 2015 MAZDA CX-9. WHILE DRIVING APPROXIMATELY 55 MPH, THE DRIVER SIDE MIRROR VIBRATED CAUSING THE CONTACT'S VISION TO BECOME DISTORTED THROUGH THE MIRROR. AS A RESULT, THE CONTACT WAS UNABLE TO IDENTIFY THE OBJECTS. THE VEHICLE WAS TAKEN TO THE DEALER, BUT THE TECHNICIAN WAS UN..."

"I PURCHASED THE CAR NEW ON SEPTEMBER 18,2015. HAVING THE CAR FOR 3 MONTHS I HAVE BEEN AT THE SERVICE DEPARTMENT 3 TIMES. I GOT HOME THE FIRST DAY AND THE BELT WAS NOT REGISTERING AND WAS MAKING NOISE WHEN I HAD IT ON. THE LAST 2 TIMES I CONTINUE TO HEAR NOISE COMING FROM THE CAR. THE NOISE IS HEAR..."

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

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Engine 17 complaints

25th: 66,788 mi Median: 83,873 mi 75th: 108,083 mi

Unknown Or Other 9 complaints

25th: 752 mi Median: 34,192 mi 75th: 79,563 mi

Service Brakes 3 complaints

Median: 16,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 9 MD: 6 MA: 6 GA: 4 LA: 4 TX: 4 VA: 3 FL: 2 NY: 2 OH: 1

Mazda Cx-9 — Other Years

See how this model compares across different model years.

Year	Complaints	Median Mileage	Top Issue	Crashes
2007	98	94,500	Suspension	3
2008	229	104,000	Suspension	14
2009	65	80,000	Service Brakes	2
2010	193	71,000	Service Brakes	6
2011	206	75,200	Service Brakes	10
2012	263	55,000	Service Brakes	14
2013	79	53,000	Engine	7
2014	73	52,789	Engine	1
2016	140	32,200	Engine	6
2017	76	33,500	Engine	0
2018	162	18,500	Engine	6
2019	69	28,000	Engine	1
2020	23	-	Engine	0
2021	41	51,093	Engine	10

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