I own a 2015 1.6 diesel. I perform the interim oil change myself, but whilst it was under warranty I bought the genuine Hyundai part. Upon opening the box I found it was a Mahle part, so now I buy Mahle from wherever I can get them at a good price. My old car is a 2011 diesel, and uses the same filter. For this car I have nearly always used Mann filters, or Hengst. It has now driven over 420,000 km so I think these filters have been doing their job. I do 3-4 oil changes per year, so I try and wait until there are good deals on filters and buy 3 or 4 at a time. For the same reason, I buy oil in 20 litre packs as this works out more economical than buying 5 litres each time.
Use www,partsouq.com to find out the OEM part number for your car, then go on Mahle, Mann or Hengst website to find the correct cross-reference. I find some auto-parts suppliers can select the wrong part, especially if they get confused with cars built in South Korea and those built in Czech Republic.