The engine air filter element of a ninth generation (2012, 2013, 2014, 2015 and possibly also the 2016 model year) Honda Civic should be cleaned at every oil change and replaced when dirty. To view my DIY tutorial for the procedure, including replacement filter part numbers, click on the text link or thumbnail image below.
2012-2015 Honda Civic 1.8L I4 Engine Air Filter Replacement Guide
