melvimbe
FRF Addict
All depends on how long the OP plans to keep it. I'm usually in a truck about 5-6 years and I average 20k miles a year.
Not just how long, but what priorities are. If you are really only interested in the power train, extended warranty doesn't get you much. As well, if you plan on a lot of mods and a tune, you're probably voiding your warranty.
edit: I like the idea of a warranty, that you don't don't have to worry about unforseen expenses, but for the most part, you're going to have quite a few of those before your extended warranty pays off. I'm going without for now.