I just bought a brand new Mazda 3 3 months ago. 3 problems find so far.
Its AC (air condition) will almost not working in the 35 degree C week, runs 2 seconds, stop 13 seconds, then repeat!
It only works so so under 25 DC, produce 50% or less cold air than other brands. runs 5-10 seconds, stop 10+ seconds!
when outside is >= 28DC, cloth will be wet every time.
Side mirror is smaller. not easy to see side back.
Reverse signal will be over-witted by break signal when you backward with break half-down!
So I have difficult when install backup safety sensor (radar).
The main-power-system and driving feeling are good!!!