Home · 2019 Mazda CX-9 · Complaints
What 51 owners told NHTSA about the 2019 Mazda CX-9
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 51 complaints match · Fuel system · clear filters
May 17, 2024BrakesEngineFuel system
Have been making repairs back to back since I bought it had to do four oil changes within that year then tires were completely worn electrical problems kept freezing spark plugs completely burnt discs were really rust car automatically turned off even though the battery is still good and still had gas had that happen twice and did more of a history search in it has had more complaints before every time try to take it to Mazda always be something with their system
NHTSA ODI 11589375
Dec 21, 2023Fuel systemEngine
The contact’s husband owns a 2019 Mazda CX-9. The contact stated that while the vehicle was at the dealer for a diagnostic test, she was informed that the head gasket was cracked, and fluids were leaking into the engine. The vehicle was not repaired due to the cost. Additionally, the message “Excessive Engine Temperature - Engine Output Will be Limited" was displayed. The vehicle was not included in NHTSA Campaign Number: 21V875000 (Fuel System, Gasoline). The manufacturer was made aware of the failure. The failure mileage was approximately 62,756.
NHTSA ODI 11561308
Working with the data? Download all 51 complaints as CSV · fetched from NHTSA July 14, 2026
How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your
pre-purchase inspection list. Back to the
full 2019 Mazda CX-9 verdict →