The iridium tipped OEM spark plugs in a 3rd generation (2013, 2014, 2015, 2016 and maybe also the updated 2017 model year) Hyundai Santa Fe equipped with the Theta II 2.4 liter inline four cylinder GDI motor can last up to 100,000 miles, but they should be checked before that mileage. Take a look at my DIY instructions for the procedure (with the replacement part numbers) by clicking on the text link or thumbnail image below.
2013-2016 Hyundai Santa Fe Spark Plugs Replacement Guide
