KnownCarProblems2018 Mazda CX-9 Problems and Recalls
Owners filed 128 complaints with NHTSA about the 2018 Mazda CX-9, most often about the engine (61% of complaints, typically around 72,000 miles). It is 5th of 17 CX-9 model years by number of complaints and has 2 recalls.
Most common 2018 Mazda CX-9 problems
Engine
78 complaints · 61%Half of these problems showed up before 72,000 miles.
The contact owns a 2018 Mazda CX-9. The contact stated that while the vehicle was parked, he observed condensation under the vehicle. The vehicle was towed to an independent mechanic where it was diagnosed that the engine needed to be replaced. The vehicle was repaired but the failure persisted. The contact stated…
The contact owns a 2018 Mazda CX-9. The contact stated that while driving at various speeds, the engine started overheating within approximately 15 minutes of driving. The contact had to pull over and wait for a while to let the engine cool down before continuing to drive. The contact stated that there was a message…
Other or unspecified
19 complaints · 15%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.
Electrical
15 complaints · 12%While driving the vehicle the car to an abrupt stop and I had no control. The dashboard lit up with all types of warnings and heat was coming from the front of the car.
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.
Transmission
13 complaints · 10%Brakes
11 complaints · 9%Half of these problems showed up before 28,000 miles.
I'm constantly have a front windshield error : causing my vehicle to just automatically stoping while driving on the freeway and streets. My air bags didn't deploy when I was I a accident . I've taken it to the dealer 3 times already and they always have a different excuse or reason
I wanted to say it happened to US while we were driving back from a daytrip on saturday. We had our kids in the car and my husband was driving. All of a sudden the scbs light came on and the car just stopped giving gas. The car behind US couldn't tell we were slowing down because there was no brake light. We were…
Fuel system
7 complaints · 6%Parts named most often: delivery.
I was waiting in a stationary position, at a red light, behind some other vehicles, with my foot on the brake pedal. All of a sudden, the vehicle started to lurch forward as if someone had stepped hard on the gas pedal! I was struggling to keep the car still by depressing the brake pedal harder, but it wouldn't stop…
The contact owns a 2018 Mazda CX-9. The contact stated that while pulling up to a gas pump the vehicle lost motive power and stalled. The contact added gasoline to the vehicle, restarted the vehicle, and was able to continue to drive to her residence. Several weeks later the failure recurred while the contact was…
Driver assistance
5 complaints · 4%Parts named most often: automatic emergency braking, warning.
Steering
3 complaints · 2%
Complaints are owner reports to NHTSA, not verified defects. One complaint can name several components, so shares add up to more than 100%.
2018 Mazda CX-9 recalls
Fuel system: fuel pump
Risk: Fuel pump failure may cause an engine stall, increasing the risk of a crash.
Fix: Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed july 18, 2022. Owners may contact mazda customer service at 1-800-222-5500 option 4. Mazda's number for this recall is 5321k.
Full defect summary
Mazda 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, potentially causing the fuel pump to fail.
Electrical: wiring
Risk: The passenger frontal air bag may not deploy, increasing the risk of injury. Inoperable turn signals prevent the driver from signaling to other drivers, increasing the risk of crash.
Fix: Mazda will notify owners, and dealers will repair the wiring harnesses, free of charge. The recall began july 26, 2019. Owners may contact mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3419e.
Full defect summary
Mazda 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 system.
Recall repairs are free at any franchised dealer. Enter your VIN at nhtsa.gov/recalls to see which recalls are still open on your car.
Questions about the 2018 Mazda CX-9
- What are the most common problems with the 2018 Mazda CX-9?
- By NHTSA owner complaints: engine (78 complaints, typically around 72,000 miles); other or unspecified (19 complaints); electrical (15 complaints).
- How many recalls does the 2018 Mazda CX-9 have?
- 2 recalls listed by NHTSA, the latest from November 12, 2021 (fuel system). Check your VIN at nhtsa.gov/recalls to see which ones are still open on your car.
- Is the 2018 a bad year for the Mazda CX-9?
- It is 5th of 17 CX-9 model years by number of complaints, with 128 complaints. Complaint counts are not adjusted for how many cars were sold, so popular years collect more of them, and the newest years have had less time to.