Mazda 3 coil packs frequently failing every two months on Mazda 3

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

Problem overview

Some Mazda 3 owners report experiencing frequent ignition coil pack failures, occurring every two months, which can lead to frustrating and costly repairs. These failures may be attributed to significant heat exposure in the engine bay, causing premature degradation of the coil packs. Additionally, owners of Mazda 3 models, particularly those with 1.6 and 1.8-liter engines, often encounter common faults related to ignition coils, leads, and spark plugs that contribute to these issues. Symptoms such as misfires, where the ignition spark is insufficient to fully burn the air-fuel mixture, can negatively impact engine performance. Furthermore, some owners find that internal short circuits, potentially caused by voltage overload, damaged spark plugs, or ECU malfunctions, are responsible for the coil pack failures. To mitigate these issues, it is crucial for owners to conduct regular maintenance, monitor for overheating, and ensure the proper functioning of related components.

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