Engine complaints and recalls from NHTSA
Summary
The 2018 Mazda CX-9 has 60 NHTSA engine complaints and 0 engine-related recalls.
60
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 9, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Dec 26, 2025 | ENGINE | Here the facts, bought a car out of state (Illinois) from Iowa with 130,131 miles on Sept 12th 2025,... |
| Jul 26, 2025 | ENGINE | Cracked cylinder head/leaking coolant. |
| Jun 14, 2025 | ENGINE | . In January 2024, I purchased a used 2018 Mazda CX-9. The vehicle ran well until [XXX], when I disc... |
| Dec 13, 2024 | ENGINE | coolant leaking from engine block cracked cylinder head |
| Dec 7, 2024 | ENGINE | Our Mazda CX-9, having roughly 86,000 miles, had catastrophic engine failure while driving. This is ... |
| Nov 4, 2024 | ENGINE | coolant leaks at the cylinder head around the exhaust manifold. Caused crack in the head. The Mazda ... |
| Oct 25, 2024 | ENGINE | Fan is not working and car is overheating when driving in traffic or low speeds - from forums this s... |
| Oct 21, 2024 | ENGINE | My vehicle was low on antifreeze. I brought it into the dealer and had them look at it. They told m... |
| Sep 30, 2024 | ENGINE,FUEL/PROPULSION SYSTEM | - My 2018 Mazda CX 9 started stalling and jittering at idle and then eventually during slow driving.... |
| Sep 30, 2024 | ENGINE | Engine cylinder head is leaking coolant. This is a known issue by Mazda as they have submitted a TSB... |
| Sep 21, 2024 | ENGINE | Over heating /coolant leak |
| Aug 26, 2024 | ENGINE | While driving on an interstate service drive in Michigan, my 2018 Mazda CX9 GT suddenly lost power a... |
| Aug 22, 2024 | ENGINE | Vehicle had bucking coming to a stop. Noticed coolant was l9w, and temp guage was fluctuating at a s... |
| Jul 20, 2024 | ENGINE AND ENGINE COOLING | The contact owns a 2018 Mazda CX-9. The contact stated that while driving at various speeds, the eng... |
| Jul 18, 2024 | ENGINE | I purchased a 2018 Mazda cx9 from a local used car dealer several weeks ago. Check engine light came... |
| Jun 30, 2024 | ENGINE | Mine Mazda 2018 CX9 had coolant leakage at 55K miles. Issue is with faulty cylinder head acknowledge... |
| Jun 22, 2024 | ENGINE | "High coolant temperature warning. Stop car at a safe place immediately " came up. Stopped car at a ... |
| May 1, 2024 | ENGINE | Due to the flawed engine design which is well documented for these engines, ours started leaking coo... |
| Apr 27, 2024 | ENGINE | Cylinder head cracked at 100k. There is tsb knowing that this is a problem. It even stats that it ha... |
| Apr 26, 2024 | ENGINE | 2018 CX9 with 74k miles. Took it back to the dealer where I bought it from and have an extended warr... |