Originally Posted By: slacktide_bitog
The car is only two years old. How many miles do you have on it?
Even copper plugs should last 30k, which almost nobody uses anymore except Chrysler.
it seems your OE plugs are Denso Iridium. They should easily last at least 100k. Denso part number 3479 aka ZXU20HCR8.
The only alternative is Champion 9060.
More plugs will be available by the time you actually need to replace them
It's 3 years old and has 41K. Owners manual specs these to be replaced at 45K. Guessing the GDI turbo is a factor. I would like to avoid any warranty problem. Plugs are easy to replace and relatively cheap.
I am aware of the Denso info you list but find it hard to believe NGK doesn't make an equivalent plug.
My 2011 with the 3.5 v6 specs. 100,000 miles on the plugs.. I like the 3.5 it has a lot of power and does not use a drop of oil although it is very noisy during startup (all the 3.5 v6 engines sound like this) it runs very well