NHTSA Complaint #11558846 — 2016 MAZDA CX-9

ENGINE issue reported to NHTSA

Check any vehicle history by VIN - Free vehicle history report

Complaint Details

ODI Number	11558846
Vehicle	2016 MAZDA CX-9
Component	ENGINE
Date of Incident	November 7, 2023
Date Filed	December 6, 2023
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	HI

Consumer Description

While driving, engine suddenly overheated due to coolant leak from cracked cylinder head. This was a known issue per the TSB 01-002/23. See attached. Vehicle only has 55k miles and has been maintained, only requiring oil change, topping off of fluids, and filter changes. Dealership has determined that it will require a completely new long block. Mazda USA is currently only willing to cover a small fraction of parts costs, requiring me to pay the remaining parts and all labor costs.

Related Complaints for the 2016 MAZDA CX-9

Other ENGINE Complaints

#11706610 — December 22, 2025 — I own a 2016 Mazda CX9 Touring FWD (180k miles). Today my car was diagnosed with cracked cylinder head, resulting in ...

#11697196 — November 3, 2025 — In June of 2022 I started having a strong antifreeze/engine coolant smell inside the cab of my vehicle and also outsi...

#11695620 — October 25, 2025 — Cylinder head crack. Combustion gasses leaking into coolant causing overheat. Combustion gasses bleeding into oil cau...

#11632664 — December 27, 2024 — Engine failure with crack in the engine after a loss of coolant fluid.

#11626600 — November 21, 2024 — Head gasket leaking and caused major engine issue at 89,000 miles. Mazda has known of this issue, but refuses to reca...

Recent Complaints for the 2016 MAZDA CX-9

#11687565 — ENGINE AND ENGINE COOLING — September 16, 2025 — The contact owns a 2016 Mazda CX-9. The contact stated that while driving approximately 45-50 MPH, the vehicle sudden...

#11656449 — ELECTRICAL SYSTEM — April 23, 2025 — Smart City Break Malfunction warning light appears while driving. Simultaneously the tire pressure warning appears. A...

#11656449 — FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING — April 23, 2025 — Smart City Break Malfunction warning light appears while driving. Simultaneously the tire pressure warning appears. A...

#11621833 — ELECTRICAL SYSTEM — October 24, 2024 — Vehicle failed to turn off the engine while in park and I was unable to lock vehicle while engine was still running. ...

#11613534 — ELECTRICAL SYSTEM — September 9, 2024 — 1. What component or system failed or malfunctioned, and is it available for inspection upon request? The entire elec...