One problem related to gas recirculation valve (egr valve) has been reported for the 2008 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Kia Motor Optima based on all problems reported for the 2008 Optima.
2008 kia Optima. I had been driving around town for about 20 minutes. It was 93 degrees outside air was running. Came to a stop at red light and the engine shut off the radio still worked the check engine light. And the other lights that come on when you start the car. There was no warning to this the before it happened. I put my car back in park and turned the ignition off and then tried to start it up. It started and didn't have any problems for the rest of the day. Happened before noon drove until 430 off and on and it was fine. Has 78000 miles on it. When I turned it back on the check engine light did not come back on so when I went to auto zone to check it no alerts cam up but they said it was strange and the light should have stayed on. Have read many similar problems.