The engine air filter element for the SKYACTIV G DOHC 16V VVT 2.5 liter inline four cylinder engine in a third generation 2014, 2015, 2016, 2017 and 2018 Mazda 6 sedan should be cleaned at every oil change and replaced every few years or 30,000 to 45,000 miles. Check out my DIY tutorial for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.
2014-2018 Mazda 6 Engine Air Filter Replacement Guide
