I bought an extended warranty from the dealer for my Volt as I plan to keep it for several years. The Ally backed warranty plan works just like the original GM bumper-to=bumper warranty. No other outside plan operates like that one does. In fact, if you look at the warranty information any dealer has based on your VIN #, you will see the plan listed and if you need warranty repairs at any dealer in the world, they honor it just like you were on the original 3/36 warranty.