NHTSA Complaint #11549216 — 2018 MAZDA CX-9

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number 11549216
Vehicle 2018 MAZDA CX-9
Component ENGINE
Date of Incident
Date Filed
Mileage N/A miles
Crash No
Fire No
Injuries 0
Deaths 0
Vehicle Towed No
State TX

Consumer Description

Went in to the mechanic to get a regular oil change and noticed a liquid slushing sound after starting the car up. Was informed that there is a major coolant leak somewhere in the car. Took it to Mazda dealership right away who confirmed that it is a cracked cylinder head. I got lucky that the car did not overheat on the road and happened to catch it in the nick of time. No check engine lights or low coolant lights came on at all.

Related Complaints for the 2018 MAZDA CX-9

Other ENGINE Complaints

#11716057 Here the facts, bought a car out of state (Illinois) from Iowa with 130,131 miles on Sept 12th 2025, Mazda CX9, the ...
#11681066 Cracked cylinder head/leaking coolant.
#11674928 . In January 2024, I purchased a used 2018 Mazda CX-9. The vehicle ran well until [XXX], when I discovered an engine ...
#11657829 Our Mazda CX-9, having roughly 86,000 miles, had catastrophic engine failure while driving. This is caused by coolant...
#11654683 coolant leaking from engine block cracked cylinder head

Recent Complaints for the 2018 MAZDA CX-9

#11719629 SEATS The adjustable rails holding the rear left seat in place no longer latch. It is available for inspection. This is the...
#11713860 ELECTRICAL SYSTEM Passenger seat heater either had a grounding issue or shorted out, causing to seat to start smoldering and catching f...
#11694595 VISIBILITY/WIPER Passenger side sun visor will not stay in place. Cannot lock it in up position, which means it droops. Causing sight ...
#11686751 BACK OVER PREVENTION: WARNINGS [XXX] 2018 MAZDA CX-9 GRAND TOURING 89014 MILES Date: 9/11/2025 To: Mazda North American Operations Attn: Customer...
#11686751 ELECTRICAL SYSTEM [XXX] 2018 MAZDA CX-9 GRAND TOURING 89014 MILES Date: 9/11/2025 To: Mazda North American Operations Attn: Customer...
Check any vehicle history by VIN - Free vehicle history report