I have no way of comparing the filtration capability of the two filters. But the WIX filter looks to be of higher quality. The pleated cellulose filtration material is neater looking and is a perty yellow color vs the beige of the KIA, lol. Instead of the paper-looking end caps on the OEM that you have to force onto the filter housing cap in order to
seat (and which I believe may make the cap harder to thread back on to the housing), the WIX filter simply snaps into place nicely with its plastic end caps. Fit and finish, the WIX seems better. They are both made in S Korea. The OEM filters are stamped 'Mahle' on the end caps, which may be difficult to read since the yellow ink bleeds into the porous material. Mahle Group is a worldwide powerhouse in automotive parts headquartered in Germany, so the OEM filter is IMO still of good quality. I would be curious as to whether a fleece filter would work with the Stinger, and whether someone will come along and produce one. Probably not likely with the very short oil change intervals recommended by Kia. This time around I set my service interval at 7K miles. Give me a fleece filter option and I'd think about going to 10K miles.