NHTSA Complaint #11493144 — 2016 MAZDA CX-9

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11493144
Vehicle	2016 MAZDA CX-9
Component	ENGINE
Date of Incident	November 6, 2022
Date Filed	November 10, 2022
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MD

Consumer Description

A strong coolant smell was noticed in the interior of the car and from the engine compartment. The diagnosis from the Mazda service facility was that there was coolant leaking from the head on the engine. Eventually this would have led to overheating of the vehicle which could have resulted in significant engine damage. The manufacturer has issued a technical service bulletin (TSB) for this problem. Cracking of the head that leads to coolant leaks is a known problem with this engine in several different models of Mazda including CX-5, CX-9, and Mazda 6. Our vehicle has remained in the shop since it was taken in on 11/8/2022.

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