Spark Plugs on 2006 Kia Sorento

How do I change the spark plugs on it. I can't see where there located.

Asked by for the 2006 Kia Sorento
I spoke with my dealer ( whom I trust )and apparently only a qualified Dealership mechanic can replace your Spark pugs, since they are hidden way down in the engine.
He told me also not to worry about them until at least 60,000 miles or more, and that it should cost about 400/500 $ to get it done.