One problem related to sway bar has been reported for the 2009 Mazda MAZDA5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Mazda MAZDA5 based on all problems reported for the 2009 MAZDA5.
Loud clunking noise in left/front over uneven surface. Worse during cold weather. Checked by independent dealer then by Mazda dealership. Told sway bar bushings were the problem. Car was under warranty at time of initial complaint, but technician was unable to hear it. [bushing warm by the time I got to dealer]. Claim made to Mazda to repair under warranty but was declined. Internet search shows this to be a known problem on this model.