Table 1 shows one common equipment related problems of the 2015 Kia Motor Optima Hybrid.
| Problem Category | Number of Problems |
|---|---|
| Equipment problems |
* October 2017 while driving in the freeway car slowed down. Got off freeway and turned off car. Car would not start anymore. Kia replaced high voltage fuse, hybrid battery, power relay. * March 2018 car was taken in due to hev and engine light on while driving. Car did not accelerate. Kia replaced the transmission. * March 2018 car was returned after transmission change and 2 days later while driving car gave hev and engine light on. Kia said it was a "loose wire" from transmission. * March 2018 car gave hev and check engine light on while driving and kia replaced the transmission again (2nd time in 1 month). * April 2018 check engine and hev code came out while driving and kia replaced the computer from engine. *March 2019 hev and check engine light while driving on kia replaced the main harness.