Mazda CX-9 loss of power and stalling due to catastrophic engine failure and overheating on Mazda CX-9

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mazda CX-9 owners report experiencing issues such as loss of power and stalling, which may be linked to catastrophic engine failure and overheating. These problems can stem from a blown head gasket, leading to symptoms like overheating, white smoke from the exhaust, milky oil, and engine misfires, often requiring major repairs or a complete engine reconditioning. Additionally, overheating can result from a malfunctioning cooling system, low coolant levels, or a faulty water pump, and can manifest as loss of engine power and stalling. It is crucial for owners to address these issues promptly to prevent further engine damage and ensure the safety and reliability of their Mazda CX-9. Regular maintenance and timely repairs are recommended to mitigate these risks.

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