One problem related to o2 sensor has been reported for the 2006 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Kia Motor Optima based on all problems reported for the 2006 Optima.
My kia Optima 2006 has had several problems: bad oxygen sensor, an electrical short, and most recently- will not shift out of first gear. Kia says my VIN is not included in the current recall. I took the car to a kia dealer a few weeks before the gears quit shifting, but they couldn't find a problem. I have replaced six headlights and three tail lights. This car is a lemon! please ask kia to extend their current recall as, obviously more cars are affected than they are reporting. Please investigate!.