I wouldn't do it unless it's a manufacture cerfified warranty ,I had experience with a third party national wide extended warraty on two of my cars ,although I was able to get some repair covered and pretty much paid back the cost of the policty ,there were way too much hassle and time consuming during the process ,they usually try their best to decline your request the first time ,if it's something clearly written in the coverage ,they'll delay the process and make you wait ,my car usually sit in the dealership for more than 3 weeks before they authorize the repair,these people are very tricky to deal with .