Depends on how long you keep the car. I drove my last car for 13 years (still have it actually, haven't sold it yet). I just bought a new replacement. The warranty and low mileage are worth a lot when you plan to keep the car for a long time. Lifetime warranty's are also worth considering if you are in it for the long haul (usually only available for original owner).

If you buy used, you really don't know what you are getting. If you want to play backyard mechanic, go for it. Me, I just want my car to work.