Get reliability information for the Kia Optima from Consumer Reports, which combines extensive survey data and expert technical knowledge. We liked its comfortable ride as well as its quiet and refined cabin. The Kia also has very good fit and finish. The engine is smooth, though it isn't very fuel. IIHS ratings for the Kia Optima 4-door sedan - midsize car. Rating applies to models built before October
The Kia Optima receives an average consumer rating of overall and a for reliability, which means owners consider its reliability to be above. The average rating is a out of 5 stars. The Kia Optima Reliability Rating is out of 5. It ranks 3rd out of 32 for all car brands. Learn. In my experience, it has been a reliable vehicle. The A/C compressor was not a major problem; it still drove just fine. I see that many of you are having.