Hi, Just about to pick up 2006 S40 T5 AWD from the dealership. I've been offered extended warranty and I'm stressed about it. Four years for under $4000. Seems like a lot of money to me. I do plan to do slight mod on the car and friends all tell me it will void the warranty. I also recall stories from friends and family about how they engaged into rough arguments when bringing car back to dealership for service and almost everything isn't covered under warranty. Just want to know if there are any big issues I should be aware of about the S40 T5 AWD. Thanks!!!