NHTSA Complaint #11493608 — 2015 KIA OPTIMA
ENGINE AND ENGINE COOLING issue reported to NHTSA
Complaint Details
| ODI Number | 11493608 |
| Vehicle | 2015 KIA OPTIMA |
| Component | ENGINE AND ENGINE COOLING |
| Date of Incident | |
| Date Filed | |
| Mileage | 106,000 miles |
| Crash | No |
| Fire | No |
| Injuries | 0 |
| Deaths | 0 |
| Vehicle Towed | No |
| State | CA |
Consumer Description
The contact owns a 2015 Kia Optima. The contact stated that while driving at an undetermined speed, the vehicle failed to accelerate and stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer where it was diagnosed that an engine replacement was needed. The vehicle was not repaired. The manufacturer was notified and informed him that he had failed to complete the knock sensor detection system (KSDS) repair and provided no additional assistance. The failure mileage was approximately 106,000.
Related Complaints for the 2015 KIA OPTIMA
Other ENGINE AND ENGINE COOLING Complaints
#11689846
The contact owns a 2015 Kia Optima. The contact stated that while his son was driving at 60 MPH, the instrument panel...
#11666376
See attached document for complaint.
#11664783
The contact owns a 2015 Kia Optima. The contact stated while driving approximately 75 MPH, the vehicle independently ...
#11662070
The contact owns a 2015 Kia Optima. The contact stated while driving approximately 65 MPH, the check engine warning l...
#11653673
See attached document for complaint.
Recent Complaints for the 2015 KIA OPTIMA
#11719695
ENGINE
Engine failure while driving on freeway. Almost hit by semi truck. Towed to Dealership. Engine check light flashing c...
#11718562
UNKNOWN OR OTHER
Paint is peeling off all over my car. I see this is a known issue with the white paint and nothing is being done abou...
#11717931
ENGINE
On December 27, 2025, at approximately 150,556 miles, my 2015 Kia Optima Hybrid experienced sudden engine knocking, p...
#11717931
POWER TRAIN
On December 27, 2025, at approximately 150,556 miles, my 2015 Kia Optima Hybrid experienced sudden engine knocking, p...