One problem related to gas recirculation valve (egr valve) has been reported for the 2016 Kia Motor Optima Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2016 Kia Motor Optima Hybrid based on all problems reported for the 2016 Optima Hybrid.
For the 2nd year, my kia would not start in 32 degree weather in big bear, CA. This is an annual trip & took my kia. The lights, radio all turn on but the engine will not start. I have to wait until noon for the sun to warm up the car & then it's back to normal. I have taken the car back to the dealership & have been told they cannot find any malfunction & never heard of anyone experience what I have. There are many forums with kia owners complaining of the same, but cannot get a fix or acknowledgement that the problem exists. It's beyond frustrating when the car has less than 40k miles.