NHTSA Complaint #11585527 — 2018 MAZDA CX-9

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11585527
Vehicle	2018 MAZDA CX-9
Component	ENGINE
Date of Incident	April 15, 2024
Date Filed	April 26, 2024
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	RI

Consumer Description

The 2018 Mazda CX-9 has been experiencing significant engine coolant leaks, which are suspected to stem from a manufacturing defect. The coolant leaks appear to be primarily caused by a casting defect in the engine block or cylinder head, exacerbated by the pressure and heat from the attached turbocharger. These defects lead to coolant escaping from areas that are typically obscured behind the exhaust manifold and turbocharger, making early detection difficult without detailed inspection.

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