If you’ve been having difficulty starting the SkyActiv-G 2.5L I4 engine in your 3rd generation (2014, 2015, 2016, 2017 and 2018) Mazda 6 sedan and the OEM battery is a few years old, you probably need to replace it. Check out my DIY instructions for the procedure (with the OEM group size and the compatible replacement part numbers) by clicking on the text link or the thumbnail picture below.
Mazda 6 12V Car Battery Replacement Guide
