2018 Mazda CX-9 Problems

126 owner complaints filed with the United States safety regulator · top issue: Engine · verdict CAUTION 62/100

Source NHTSA public complaint and recall record · methodology

What breaks, by owner reports

Engine74
Unknown Or Other19
Electrical System15
Power Train13
Service Brakes11
Fuel/Propulsion System5

In the owners’ words

“I was driving home from work and may car started overheating out of nowhere. I was stuck in traffic and white smoke was exiting my exhaust. I pulled over and all of my coolant leaked out of my car. Took it the shop and they said I had a cracked head and need a whole new engine. I seen that there was a warranty sent out for a problem with an exhaust manifold issue leaking coolant and that is exactly what caused my pro”NHTSA complaint, 2018 Mazda CX-9 owner
“My passenger heated seats malfunction while I was driving. As I was driving on the highway I smelled something burning. I didn't know where the smell was coming from it was strong . Then while I'm driving on the highway my seat started to smoke a lot I got scared and pulled on side of the road. I realized my seat was the issue turned off the heated seats on the control. Step out the vehicle on side the highway I was ”NHTSA complaint, 2018 Mazda CX-9 owner
“My wife was driving the vehicle when the emergency lights started going off. She had to pull over because the car wouldn't run and said it was overheated. All the maintenance has been done to the car. We took it to the dealership and they said it is a cracked head and it is a known issue. They even issued a extended warranty for it. It is TSB 01-002/23. There should be a recall on this not just a partial credit.”NHTSA complaint, 2018 Mazda CX-9 owner

Recall campaigns

ReportedComponentSummary
12/11/2021Fuel System, Gasoline:Delivery:Fuel Pump SAFETYMazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform
30/05/2019Electrical System:Wiring SAFETYMazda North American Operations (Mazda) is recalling certain 2018 CX-9 vehicles. The wiring harness may disrupt electrical communications and disable the passenger frontal air bag, turn signals, and/or engine starting s

Questions owners ask

Is the 2018 Mazda CX-9 reliable?

On the federal record it scores 62/100: 126 owner complaints (15.75 per year on the road) and 2 recall campaigns, 2 touching safety-critical systems.

What is the most common problem with the 2018 Mazda CX-9?

The most-reported component in NHTSA complaints is Engine, with 74 of 137 categorised reports.

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The 2018 Mazda CX-9 scored 62/100 on the federal record.

Full 2018 data pagecosts, verdict, every numberAll CX-9 yearswhich year to avoid Most complained-about carsthe national ranking