Three problems related to engine and engine cooling have been reported for the 2004 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mazda MAZDA3 based on all problems reported for the 2004 MAZDA3.
The car ran great for the end of 2019. I bought it used at 145,000 miles. Then the automatic transmission started to slip. Now its stuck in limp mode.
Clutch slipping, high rpms, not red lining. Transmission exploded causing engine fire and burning motor and electrical components.
The engine mounts have failed and the car's engine lurches approximately 2 inches in each direction and vibrates while idling. The independent mechanic indicates they have seen a number of these engine mounts fail on this model due to poor/flimsy design.