Mine is at 269K with no issues at all, and even with that many miles I calculated 31mpg at my last fill up. Personally I never have any maintenance issues, but I still do various things anyways to keep it in top shape.
Turn the radio off and hold the 5 or 6 button down for the hours and the 4 or 5 is the minutes. Look real closely because underneath those buttons is a small H and M.
