One problem related to transmission failure has been reported for the 2015 Mazda CX-5. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Mazda CX-5 based on all problems reported for the 2015 CX-5.
Transmission failed at 63,537 miles. After being told the repair would cost $5,400 I asked would I be getting the same transmission that failed. The service advisor had contacted Mazda tech support and said "no, we've discovered the problem in your transmission and it has been corrected in the new ones". Mazda knows about this problem and it not taking responsibility to recall or repair the known issue. There is an abundance of information if you google Mazda transmission problems. Mazda also does not "tie" warranties to their vehicles. Their hope is that you buy a warranty, then you forget about warranty terms, then deny claims. They're completely unethical.