10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
2,680 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2018 Mazda CX-9 miscellaneous problems

miscellaneous problem

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2018 Mazda CX-9 Owner Comments

problem #17

Aug 072024

CX-9

  • miles

A D V E R T I S E M E N T S

Approximately three weeks ago, a message on my dashboard said to pull over immediately. Your car is overheating. I pulled over to a nearby auto shop, which indicated that I was just low on coolant. They topped off the coolant, and everything appeared fine. Two weeks later, I got the same message on the dashboard, saying my car was overheating to pull over immediately. I pulled into a nearby auto parts store and purchased coolant for the vehicle. When I checked the reservoir, it was bone dry. I added coolant and drove the car home. The following day, I checked the reservoir to see if there was still coolant, but it was all gone. I scheduled an appointment with the Mazda dealer to have the car inspected. I also checked the Mazda Forum website to see if other vehicles of my make and model had similar issues since I had never experienced this before. I found that the overheating in vehicles of my make and model was a "known issue" with Mazda. When I took it to the dealer the next day, the service agent informed me that the "known issue" was only with the Turbo model. I explained that my vehicle is a turbo model. He said that Mazda did not have to cover any costs because no recall was issued, even though it is a known issue. Mazda is now refusing to cover the repair and has indicated that the repair and replacement of the engine will cost approximately $9800. If I had been alerted earlier, I would have been able to have the car repaired.

- Denver, CO, USA

problem #16

Nov 052023

CX-9

  • miles
The infotainment screen has spider like frost inside the screen. I've checked and other models have had this same issue and have been recalled and repaired. My model year 2018 is suffering the same issue and MAZDA has lagged on this problem. Please put out a recall on this as it is a hazard when you rely on your navigation system and other components the screen assists with.

- Boerne, TX, USA

problem #15

Aug 232023

CX-9

  • miles
Cracked cylinder head which lead to coolant leak.

- Grand Forks, ND, USA

problem #14

Aug 092023

CX-9

  • miles

A D V E R T I S E M E N T S

GPS touchscreen developed cracks described as inside-frosting or spide-web. Mazda had a recall for 2015-17 years models for the same problem, but they are reluctant to recall 2018 models. In 2019, Mazda discontinued selling touch-screen GPS, but it refused to extend recall for 2018 models. I took my car to the dealership and the cost of repair is $2400. The dealer did not find any damage caused by external force. Hence, this is the same recall issue with poor hardware and craftsmanship. I would like to ask NHTSA to compel Mazda to do a recall for CX9 2018 GPS touchscreen.

- Livingston, NJ, USA

problem #13

May 132023

CX-9

  • miles
Sorry there was no incident

- Windsor Mill, MD, USA

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problem #12

Aug 232021

CX-9

  • miles
Infotainment screen has spider cracking from faulty screen when manufactured. Open TSB stating this and Mazda refuses to replace under warranty after 5 months of owning vehicle, spider cracks got worse this year. When i got more spider cracks i contacted mazda support since the first time I contacted a local dealer. Mazda support denied replacement because -?? i do not get my car serviced through mazda-??, this screen issue has nothing to do with a car being serviced. This is a safety issue as you can not see parts of the screen and will only get worse and make the whole screen inoperable when using navigation.

- Bridgewater, MA, USA

problem #11

Dec 132022

CX-9

  • miles

A D V E R T I S E M E N T S

I was resting my foot on my brake in the middle of sealed traffic and when I eased up to move forward when traffic my brakes did stop causing me to bump the car ahead of me. After that what came next was that my car then accelerated forward with my foot still on the brake. By then 2 other vehicles were involved in this accident. My car is now totaled from this.

- Indianapolis, IN, USA

problem #10

Aug 092022

CX-9

  • miles
After sitting in the heat of summer, cracks appeared on two of the corners of the LCD navigation screen making it very hard to see portions of the screen.

- Lancaster, PA, USA

problem #9

Feb 142020

CX-9

  • miles
> I have a 2018 Mazda CX-9 with about 70,000 miles on it. Since 2020 this vehicle started developing cracks in the infotainment center screen. I only had about 23,000 miles on it at that time. the cracks are now starting to obscure my back up camera, communication system and nav system displays causing a safety issue. It is distracting to not be able to see clearly on this screen and I am afraid something will happen to me or my kids. About a year ago I did take this car to the local mazda dealer, for the longest time I thought I did something to it, but I did not. They called mazda customer service and no good will was offered. there is a technical service bulletin out but not a recall. There are several models older than my vehicle that have had this screen repaired free of charge by mazda. Same issue - nothing different then what is going on with my car. There are many many of the very same complaints online. can some please investigate this issue. it is ridiculous.

- Hanover, PA, USA

problem #8

Sep 012020

CX-9

  • miles
"Spider Cracks" in both the left and right top corners that continue to spread, creating larger blind spots while in reverse. This is an issue that Mazda is aware of and impacts many models from 2014 until 2019. Even though this may not be considered a "safety feature" in it's traditional form, it has become common practice to rely on this feature while reversing the vehicle. Much like additional airbags may not be required, if they are, they should be fixed when they are proven to be faulty. Both the local dealer(Roger Beasley Austin North) and MazdaUSA refused to cover the cost of fixing the issue even though they are aware it is faulty. There is even a Service Notice that was put out by NHTSA that discusses this issue and my model is included, however I have been repeatedly told my VIN # does not qualify.

- Austin, TX, USA

problem #7

Apr 062022

CX-9

  • miles

A D V E R T I S E M E N T S

the Mazda Connect information screen has small spider cracks on the upper right part of screen that are inside the glass (if you run your finger over the crack it feels smooth). Information websites pertaining to Mazda vehicles say it's caused by temperature change.

- Philadelphia, PA, USA

problem #6

Oct 152021

CX-9

  • miles
The Mazda connect touch screen has started cracking in the corners 3 so far the past 4 months. I cannot feel the cracks. They are spreading and I am concerned eventually I will not be able to use my navigation. System at all as I will not be able to read it. I am concerned the touch ability will be lost. I understand many other Mazdas have this same defect but my model is not covered under the extended warranty like the other Mazda owners were given - the extended warranty covers vehicles older than mine. It is the same defect.

- Hanover, PA, USA

problem #5

Jun 142021

CX-9

  • miles
Internal crack in center display. Mazda Mexico refuses to extend warranty since this model has not yet been called even though other previous models already have the warning

- Calexico, CA, USA

problem #4

Apr 242021

CX-9

  • 10,300 miles
Happened to me two times in past three weeks, where I am coming to a stop, or hardly moving, and car suddenly accelerates. Had my foot on the brake and the car was still trying to accelerate. Yesterday, 4/24/21 it took all my strength on the brake to keep the car from pulling into oncoming traffic. I have been driving for 39 years and have owned many cars, and something like this never happened to me. I will be bring the car dealership tomorrow, the car has only 10K miles on it as we don't do a lot of driving with it as we owe two cars. I did not have my foot on the wrong pedal, this is very dangerous and if the dealer does not find anything with the car, I intend to sell it, as this is probably one of the scariest experience I had with a car. It is intermittent, so I am not sure when its going to occur, but twice in the last few weeks is not coincidence ( it also happened to my wife a few months ago, but we thought it could have been due to snowy road conditions). In one case I was coming up to a stop sign, and was braking and car was accelerating as I tried to break. I had to put car in neutral and the shut off car to get to stop. Yesterday, I was pulling out of a parking lot, and was waiting for an on coming car to pass me before I could turn onto road, when car was trying to accelerate, when I had my foot on brake, and took everything to keep the car from accelerating forward into on coming car. Once car passed, I made turn onto road, and issue did not repeat on the remaining mile to my house. I went onto a Mazda forum and I saw a few others who raised the same concern/issue.

- Westhampton Beach, NY, USA

problem #3

Jun 292019

CX-9

  • 18,500 miles
Car showed ignition on when the car was turned off. Same day while driving on highway car engine revved for no reason. Also when someone got out of parked car it said no key detected but car was still turned on and key was right beside me.

- Bristow, VA, USA

problem #2

Jun 292018

CX-9

  • 15,816 miles
On Friday (June 29th, 2018) around 9:29 pm, my car broke down while my family and I were traveling from rochester NY to boston Massachusetts. I was driving down the Massachusetts turnpike when all of a sudden my check engine light turned on and my car just started to slow down in the middle of the highway. I was able to pull over in time and called Mazda roadside assistance because after the car stopped, it wouldn't turn back on. Since we were on a restricted highway, my car had to be towed and we were taken to a safer location. When the car was put down, it turned on and the check engine light was still on and the fuel gauge said that the car still had 40 miles left. The guy that towed our car said that it might have been a fuel issue, so we went to get gas. Once we filled up our tank the check engine light was still on but we were able to reach our destination. The next morning, I took the car to the nearest Mazda dealership and they restarted the car and according to their report nothing was wrong with the car. They said that it was safe to drive but they had no clear reason as to why the fuel gauge wasn't stating the correct information. After the trip I, reported this issue to Mazda and they didn't answer me until two weeks later. Their response was that there was probably nothing wrong with the vehicle and that this was a one time issue. I did research on my own and discoveries that someone from saudi arabia had a similar issue. Since Mazda hasn't been willing to help resolve the situation I am filing this complaint because I am not willing to put my families life in the same risk again.

- West Henrietta, NY, USA

problem #1

Oct 052017

CX-9 4-cyl

  • 946 miles
I purchased a new Mazda Cx-9 in Sept 2017 because it had the highly touted smart city braking system for which I paid thousands extra. I had had a previous rear end collision and wanted to be sure this system would at least warn me. I set up some cardboard boxes wrapped in aluminum foil. I slowly (10 mph) drove the car into them without touching the brake or accelerator. The car did not slow down or warn me.(I tried sending a video to you from my iphone which may not go through) I made an appoint to repair this obvious factory defect and significant safety issue. The service manager at olympia Lincoln /Mazda(and puyallup milam Mazda) refused to repair it they stated and showed me a print out from Mazda factory that forbids real time testing and stated that if the trouble light is not on they aren't allowed to repair or real time test it. I think that the factory is afraid of dealing with a massive safety recall. To compound things the active live traffic display doesn't work either which makes matters worse since I can't see where an accident has occurs in real time. I understand its defective in most Mazda with navigation in 2016 and beyond. The is a class action law suit starting to be filed about this. Consumer stated regarding defective automatic braking system on 2018 Mazda Cx-9. I have not heard back after filing this complaint 2 months ago. Updated 8/24/18

- Olympia, WA, USA

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