I admit I have never looked hard at the fine print, but man there is a lot of disinformation on the internet.
Personally, I don't understand the world's fascination with extended warranties. The insurance companies (they are insurance policies) make a killing on the things, whether cars or electronic goods. Sure, there are cases where people save money. But it's bit like Vegas: at the end of the day, they are taking a lot more in than they are paying out. The CPO inspection is worthless. You are simply paying more for the car up front to cover the risk of something breaking.
It is more important to realize that some of the consumables (like brake pads and rotors) may be significantly more than other cars, say an S4. When you have 2-piece Lambo rotors the size of a medium pizza, it's going to cost you more than the dessert plates on a civic.
It's a good car. Buy it, drive it, fix it if it breaks.

2007 RS4 Sprint Blue, Tubi, Stasis MS.
Past:
2004 S4, 6MT, Nogaro, Milltek resonated catback, AWE pedals, Bilstein PSS9 coilovers.
2003 allroad, silver, auto
2001 allroad, green, auto
2001 allroad, silver, 6-speed, sways, GIAC, motor mounts, billet diverters, AWE DTS, ultimate pedals, RS4 clutch, bluetooth.