Mazda CX-3 fuel pump failure causing deceleration issue recurring after replacement at 83000 miles on Mazda CX-3

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

Problem overview

Some Mazda CX-3 owners report experiencing fuel pump failure, which can lead to symptoms such as difficulty starting the engine, engine misfires, loss of power during acceleration, and even engine stalling. Signs of a failing fuel pump may include a rough-running engine or trouble starting, and some owners have noted deceleration issues persisting even after a fuel pump replacement at 83,000 miles, suggesting that the initial problem may not have been fully resolved. Ignoring fuel pump issues can result in total engine failure, necessitating more extensive repairs. It is advisable for owners facing these challenges to have their vehicle inspected by a qualified mechanic to identify the root cause of the recurring deceleration problem and ensure that the replacement fuel pump is functioning correctly.

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