Power Train Related Problems of the 2017 Mazda CX9

Table 1 shows one common power train related problems of the 2017 Mazda CX9.

Table 1. Power Train related problems of Mazda CX9

Problem Category Number of Problems
Power Train problems
4

Power Train problem #1

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. Prior to this happening I smelled coolant in the car cabin , took it to my mechanic who tested the coolant system and found no leak. At the time he was unaware of the known issue these cars have with the cylinder head. The problem has been confirmed by Mazda and they notified me within the month of March of the problem and the extended warranty to replace the known manufacturer defect cylinder head. The Mazda dealer now has my car and acknowledges the cracked cylinder head caused the problem but said because I didn’t immediately stop on the highway and kept driving until I got to a safe location I was negligent and are refusing to fix the car which now has a blown engine, etc. It is available for inspection now at the Mazda dealer. My safety was put at risk because I could have died on the highway if the car completely stopped working, it was dangerous driving it when it first started happening because it started out of nowhere the car was fine I was driving 50+ mph and it started smoking, overheating etc. I could have also killed someone else. It is a disgrace that not only they won’t fix my car they want to say they won’t because I’m negligent? I drive my kids to and from school everyday do you think I’m going to risk their safety in an unsafe car? they should not only fix the car but compensate me for putting mine and my children’s lives at risk. A complete disgrace.

Power Train problem #2

Coolant leak cylinder head. It was running and I could smell coolant on the minifalda and it shout down.

Power Train problem #3

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. Mazda is not currently helping with engine swap or any repairs as a result and is sticking the customer with the bill.

Power Train problem #4

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. After several weeks the wobble can be felt at lower speeds of 55/60. The check engine light comes on but I'm told there's no codes when they diagnostic the reading. I've expressed that when I pull into my garage within 30 seconds to a minute there's a loud pop it's when the car is not in motion when it's been parked and turned off is when I noticed it. I brought it to my personal mechanic just to look at and drive and he's pretty certain it's a powertrain bearing or something of those sorts. Brought it back to westshore and they put another set of tires on it. This is been going on now for 9 months and after doing research online and some of the NHTSA ids this is a problem and I do not feel safe. And it needs to be handled the amount of complaints in times that I visited that dealership to fix this problem and all they do is put new tires on it is asinine. I have tons of documentation the same documentation that's at the dealership I do everything via email for that reason.


Power Train related problems in other Mazda CX9 model year vehicles:



CX9 Service Bulletins
CX9 Safety Recalls
CX9 Defect Investigations