NHTSA Complaint #11664397 — 2018 MAZDA CX-5

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11664397
Vehicle	2018 MAZDA CX-5
Component	ENGINE
Date of Incident	May 9, 2024
Date Filed	June 2, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	SC

Consumer Description

Issue with the engine cylinder head leaking engine oil from the side of the cylinder head, where the casting has a defect. Leaks engine oil onto the flashing for the exhaust and exhaust manifold, where it could catch fire. The problem has been confirmed and diagnosed by a licensed mechanic. However, the dealer would not take responsibility for repair or assistance in repair. There are no warnings, while driving and after stopping, the smell of burning oil comes into the car and also smoke from the engine compartment.

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