The iridium tipped spark plugs in a second generation (2010, 2011, 2012, 2013, 2014 & 2015) Hyundai Tucson can last up to 100,000 miles, but they should be checked well before that mileage. To view my DIY instructions for checking or changing the spark plugs in a Theta II 2.4L I4 engine, click on the text link or thumbnail image below.
Hyundai Tucson Spark Plugs Replacement Guide
