Christy answered 2 years ago. I own a 2013 Mazda 3, Within three years killed two and almost the third battery. The first battery was under warranty but of course, that one was prorated. The second battery replaced free of charge. Now I'm on my third battery and Mazda dealership nor Les Shuab Could diagnose the issue.
The customer is responsible for installation charges upon replacement. MAZDA HIGH-PERFORMANCE REPLACEMENT BATTERY WARRANTY. 36/60-Month Replacement Warranty If dealer installed, coverage is as follows: 1-36 months: Free replacement and labor; 37-48 months: Customer is responsible for 70% of the MSRP of battery and labor