Kia Optima misfire / rough idle reports by year
53 NHTSA complaints describe misfiring cylinders or rough idling on Kia Optima vehicles. The most reported year is 2016 with 29 reports.
| Year | Reports | Share of narratives | |
|---|---|---|---|
| 2019 Optima | 6 | 3% | |
| 2018 Optima | 11 | 5% | |
| 2017 Optima | 7 | 3% | |
| 2016 Optima | 29 | 4% |
Counts come from keyword analysis of complaint narratives — one complaint can describe several symptoms, and classification is approximate. Raw counts favor years that sold in larger numbers.