It's been 2 years since this Kia Rio had a new filter. Time to inspect.
Step 1: Accessing the Filter.
Four clips pulled off the filter housing and the filter is visible now.
Step 2: Inspection.
Yuck. It's really dirty. Sadly I don't have a new filter so I had to make do.
Step 3: Cleaning.
Using engine degreaser I cleaned this filter.
Step 4: Completion.
I let the cleaned filter dry in the sun and reinstalled into the car. Now the engine breaths better and performance is improved.