I have a '99 Concours, bought with 27K mi in 2003...in absolutely cherry condition. I bought GMPP Major Guard (4/48), but negotiated a good deal for it ($2,000 w/$50 deductible). Since then, I have had to replace radio ($595), rear-right passenger window mechanism failed ($300), and had both tie-rods replaced ($400). I've had almost $1,300 worth of repairs done for $100 out of pocket. I have 2 years and 30K mi left on the warranty. Could something else go wrong? Maybe, maybe not...but I'm covered. My warranty has almost paid for itself... Shop the warranty at different dealers (you will get different prices...the mileage/year of the Caddy determines the final price you pay). In the earlier example regarding the head gasket, you would still be net several hundred dollars ahead, which would cover future deductibles. It's insurance...with a car, you never know.