NHTSA Complaint #11688886 — 2017 MAZDA CX-9

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11688886
Vehicle	2017 MAZDA CX-9
Component	ENGINE
Date of Incident	September 16, 2025
Date Filed	September 22, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	UT

Consumer Description

I took our vehicle into Mazda due to a coolant leak that could not be located. It had my wife stranded due to the vehicle overheating. Everything lined up with CSP11. The dealership is now stating that the vehicle has a blown gasket and needs an engine replacement. This is the issue covered by CSP11 except that the crack is in the wrong location. They haven't found the Crack but are denying the warranty due to the covered location not being the source. The vehicle only has 93000 miles on it.

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