One problem related to rear seat belt has been reported for the 2003 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Kia Motor Optima based on all problems reported for the 2003 Optima.
The standard safety strap in the middle rear seat will not securely fasten the child seat. After a period of days the straps will loosen. The car seat did not fit properly in the rear seat even when professionally installed. The consumer has tried multiple child seat brands and types all with the same result. On three occasion the seat has tipped over while the child was secured in it.