 I purchased my 2005 Kia Optima from a friend in June 2007 and it had almost 30k miles on it.  I was in school and couldn't afford to get the 30k scheduled tune-up (shame on me).  I did get regular oil changes and tire rotations.  Only once did the car need to go to the shop and the problem was an accelerator sensor that was covered by the warranty.  I never broke down in this car during the three years/45k miles I put on it.  I believe the gas mileage to be great and the car felt solid.  I just recently traded it in with 72k miles on it and bought a 2009 Kia Optima with 12K.  I purchased a second Kia because I was so impressed with the reliability.  