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Transmission and drivetrainPart report

2017 Mazda CX-9 Transmission and drivetrain Problems

Complaints
4about this part
Share
7%of 61 total for the year
Median mileage
33,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the transmission and drivetrain of the 2017 Mazda CX-9, 7% of the 61 complaints for this model year. Where a mileage was given, the median is 33,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I bought a used 2017 Mazda CX-9 from west shore honda in tampa in july of 2020. They screwed me financially and I'll handle that separately. There has been an ongoing issue since the first few days after buying the car. I've complained multiple times via email and phone. I've been trying the service department countless times. They keep stating it's a tire issue. To the point they have replaced the tires 3 times. After the second time I had already decided it's not tires. The car has a very rough ride when I'm motion. Once you got 80 it wobbles. …”

NHTSA complaint #11402740, filed 2021-03, 33,500 miles

“There was a coolant leak on my Mazda CX9 Signature with a 2.5T engine, and when driving the engine temperature started increasing slightly before taking off and turning red. I had to pull off to the side of a busy interstate road very quickly and shut the vehicle down before it overheated any more. Once I got the vehicle to the dealership, they told me it was a cracked cylinder head leaking coolant, and that it was an extremely common problem for the 2.5T mazda engines around about 60k miles, and they were actively working on one in the shop where I was for the same problem. …”

NHTSA complaint #11589218, filed 2024-05

“I was driving the vehicle on the highway when the vehicle started to overheat, lights started blinking, the car was smoking, losing power and acceleration. This car has a recall on the cyclindwr head which when cracks causing the car to loose coolant and oil. If it cracks while you’re driving especially on the highway the car will immediately loose coolant and oil thus causing a very dangerous driving condition. There was no indicator prior to the failure that there was anything wrong with the car. No check engine lights, no coolant lights nothing. …”

NHTSA complaint #11650724, filed 2025-03

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
202219%
2021513%
2020211%
201959%
20181310%
201747%
201698%
201539%
2014713%
201357%
2012188%
20112515%
20102312%
2009610%
20082716%
20071214%

Other parts of the 2017 Mazda CX-9

Engine
43 complaints
Other or unknown
9 complaints
Fuel system
6 complaints
Suspension
4 complaints
Electrical system
2 complaints
Forward collision avoidance
2 complaints
Steering
2 complaints
Wheels
2 complaints
Back-over prevention (rear camera)
1 complaints
Seats
1 complaints
Body and structure
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2017 Mazda CX-9

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology