7.5

pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
6,704 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 fuel system problems

fuel system problem

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2018 Mazda CX-9 Owner Comments

problem #4

Jan 122024

CX-9

  • miles

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

Mazda has a known technical service bulletin [XXX] which has numerous engine cylinder heads which leaks coolant causing the engine to overheat without warning. On new cars. Mazda knows it-??s an issue and has not pushed this information down to its consumers. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Alexandria, VA, USA

problem #3

May 072022

CX-9

  • miles
When this vehicle is low on fuel (but not empty) and under heavy acceleration, the fuel pump temporarily fails causing the engine to stall. This creates a serious safety hazard. Other 2019 Mazda models were covered for a similar defect under NHTSA Campaign Number 21V-875, however this specific VIN is questionably not included under that recall.

- Moscow, ID, USA

problem #2

Jul 162019

CX-9

  • 11,000 miles
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 car. I had to put it in park and turn off the engine to stop the forward thrust of the vehicle.

- Brooklyn, NY, USA

problem #1

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

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