I got the extended warranty pre-season rate last year before the 2014's were even releases. So far it has paid for itself, I've had a fuel pump failure, and accidentally cracked the plastic frame above the white side panels, and a minor problem with the computer for the lift gate not coming back down upon powering off so it would start in neutral.
All of these my dealership has been awesome with fixing within a few days, but at the same time, keep in mind, this is a brand new product, no one has had them for more than a year and a bit, and who knows what will happen to these things 2 more years down the road, until we know the lifespan of these Sparks, I'm thinking better safe than sorry knowing I'm covered for 4 years and anything I encounter with a new product will be fixed no questions asked (pending I don't break it myself!)
Just my nickel