One problem related to brake master cylinder has been reported for the 2006 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Mazda MAZDA3 based on all problems reported for the 2006 MAZDA3.
Total failure of brake master cylinder caused loss of service brakes at all wheels. No prior indication of brake issues before total loss of functionality. Vehicle brought under control using mechanical emergency brake. Replaced with aftermarket master cylinder - extremely poor brake function at present, but vehicle still in use with difficulty.