Check engine light keeps coming on, showing O2 sensors or cat. Have replaced both O2's and the cat, and it still comes on after about a week pointing to the same things.
Transmission went out (CD4E Ford made) 144000 miles.
My 3rd Mazda and I put a lot of miles on my cars and keep all the fluids changed ahead of times. Really disappointed in this car because of the O2 errors and the transmission going. I had 310000 on my 323 and quit driving it because of rust only.
Had the same problem with the check engine light and oxygen sensor. Also my 626 transmission failed at approximately 140,000 miles. The overall quality of Mazda is impressive in my opinion, however, the transmission was cheaply made. According to the transmission mechanic, two of the internal parts are friction welded together. I had never heard of such a thing. On the plus side I just love the dual cam four cylinder engine. I only wish the engine had been carried over to the newer vehicles as I plan on the 626 relacement to be a Mazda 3 (hard to find used) or a Mazda 6.